6 F 8 A 0 9 3 4
Electromagnetic Flowmeter CAPACITANCE TYPE
MODEL LF516 / LF546
INSTRUCTION MANUAL
NOTES
Before using the equipment, please read this manual carefully and understand the
contents, and then use the equipment correctly.
• NEVER attempt to operate the equipment in any ways that are not described in this
instruction manual.
• After reading this manual, store it with care in a place where it can be referred to
whenever needed.
• Please be sure that this manual is delivered to the personnel who will use this
product.
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SAFETY PRECAUTIONS
Safety signs and labels affixed to the product and/or described in this manual give important information
for using the product safely. They help prevent damage to property and obviate hazards for
persons using the product.
Make yourself familiar with signal words and symbols used for safety signs and labels. Then read the
safety precautions that follow to prevent an accident involving personal injury, death or damage to
property.
Explanation of signal words
The signal word or words are used to designate a degree or level of hazard seriousness.
The signal words used for the product described in this manual are WARNING and CAUTION.
Indicates a potentially hazardous situation which, if not avoided,
WARNING
could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor to moderate injuries or in property
CAUTION
damage.
Notes:
1 “Serious injury” refers to an injury such as loss of sight, physical damage, burns (high
temperature or low temperature) electric shock, bone fracture and poisoning and the after
effect of the injury remains or the injury requires hospitalization or long periods of
outpatient treatment.
2 “Minor to moderate injuries” refers to burns, electric shocks, and so on, that do not require
the injured person to be hospitalized or go to a hospital for a long period of time for
medical treatment. “Property damage” includes all kinds of damage to property, equipment
or materials.
Safety symbols
The following symbols are used in safety signs and labels affixed to a product and/or in the manual for
giving safety instructions.
Indicates an action that is prohibited. Simply DON’T do this action.
The prohibited action is indicated by a picture or text inside or next to the circle
Indicates an action that is mandatory. DO this action.
The mandatory action is indicated by a picture or text inside or next to the circle.
Indicates a potential hazard. The potentially hazardous situation is
indicated by a picture or text inside or next to the triangle.
Color explanation
WARNING
CAUTION
Background color: Yellow and Red, Border: Black, Picture display: Black
Background color: Yellow,
Border: Black, Picture display: Black
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SAFETY PRECAUTIONS (continued)
Safety Precautions for Hazardous Locations
WARNING
„ Do not disconnect while circuit is live unless location is known to be nonhazardous.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not modify or disassemble the enclosure.
Strength degradation and defects of enclosure can cause explosion.
DON’T
„ Do not use parts of other products.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Do not touch circuits until assembly of all components is over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the
Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing
3S8A2699(Refer to Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
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Safety Precautions for Installation and Wiring
CAUTION
„ Install a switch and fuse to isolate the
„ Use an appropriate device to carry and install the
LF516/LF546 from mains power.
LF516/LF546.
Power supply from mains
power can cause electric
shock or circuit
If this product falls to the ground,
injury, or malfunction of or damage to
the product, can be caused.
break-down.
DO
DO
■ Use crimped terminal lugs for the terminal
„ Do not modify or disassemble LF516/LF546
board and GND terminal.
unnecessarily.
Loose connections can
cause electric shock,
fire from excessive
Modifying or disassembling this
product can cause
electric shock,
current or system
malfunction of or damage to this
product.
„ Ground LF516/LF546 independently from power
equipment. (100 ohm or less ground resistance)
DON’T
DO
malfunction.
„ Turn off mains power before conducting
wiring work.
Wiring while power is
Operating this product
without grounding can cause
applied can cause electric
electric shock or malfunction.
shock.
DO
DO
„ Turn off mains power before working on
„ Do not work on piping and wiring with wet hands.
pipes.
Working on pipes while
Wet hands may result in electric
power is applied can cause
shock.
electric shock.
DO
DON’T
„ Do not conduct wiring work with bare hands.
Remaining electric
charge even if power is
turned off can still cause
electric shock.
DON’T
The label shown left is placed near the terminal board for power supply
on the converter.
Be alert to electric shock.
－ 4 －
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6 F 8 A 0 9 3 4
SAFETY PRECAUTIONS (continued)
Safety Precautions for Maintenance and Inspection
CAUTION
„ Do not touch LF516/LF546 main body
when high temperature fluid is
being measured.
„ Do not conduct wiring work when power is
applied.
The fluid raises the main
Wiring while power is applied can
body temperature and can
cause electric shock.
cause burns when touched.
DON’T
DON’T
„ Do not conduct wiring work with wet
The label shown left is placed near
the terminal board for power input.
(A black border and symbol on
yellow triangle)
hands.
Wet hands may result in
electric shock.
Be alert to electric shock.
DON’T
Use a rated fuse as follows:
Fuse rating:
• 0.8A/250V for 100 to 240Vac
Dimensions:
Diameter 5.2 mm × 20 mm
Melting time characteristic:
• Time Lag Fuses for 100 to 240Vac
„ Do not use a fuse other than the one
specified.
Using a fuse other than the
one specified can cause
system failure, damage or
DON’T
malfunction.
Usage limitation
This product is not manufactured for applying to a system requiring safety directly involved
human life as follows. Please contact your nearest Toshiba reprehensive if there is a possibility of
using this product for such use.
-
Main control systems of nuclear power plants, safety protection systems in nuclear
facilities or other important systems requiring safety
-
Medical control systems relating to life support
Warranty and Limitation of Liability
Toshiba does not accept liability for any damage or loss, material or personal, caused as a direct or indirect
result of the operation of this product in connection with, or due to, the occurrence of any event of force
majeure (including fire or earthquake) or the misuse of this product, whether
intentional or accidental.
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Handling Precautions
To obtain the optimum performance from LF516/LF546 flowmeter for years of continuous operation,
observe the following precautions.
(1) Do not store or install the flowmeter in :
・Where there is direct sunlight.
・Where excessive vibration or mechanical shock occurs.
・Where high temperature or high humidity conditions obtain.
・Where corrosive atmospheres exist.
・That can be places submerged under water.
・Where there is a sloped floor. To put the flowmeter temporarily on the floor, place it carefully
with something, such as a block, to support it so that the flowmeter will not topple over.
・Places where there is following factors.
■Factors to impede infrared switch to operate properly
・Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
・Place where brightness changes suddenly such as ON/OFF of lighting
・Dense smoke or steam near the control panel
・Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and
haze due to their attachment
・Light reflecting object near the control panel, or reflecting object such as metal plate placed
opposing to the control panel
When any of above factors is considered, take a measure for the proper operation of infrared
switch such as to place a cover or to secure a space for at least a person to stand in front of the
control panel.
When unable to avoid above factors, operate the EMF converter removing the factor by
covering the control panel by hand so that light does not shine on it, by cleaning those attached
on the control panel, or by standing in-between the reflecting object and the control panel to
block the light.
(2) Wire cables correctly and securely.
Be sure to ground at the combined converter side (grounding resistance 100Ω or less). Avoid
a common ground used with other equipment where earth current may flow. An independent
ground is preferable
(3) Select cable paths away from electrical equipment (motors, transformers, or radio transmitters),
which causes electromagnetic or electrostatic interference.
(4) The cable lead-in section must be tightened securely to keep air tightness.
NOTE : The cable connections are not provide with flowmeter. Because 1/2-14NPT screw
holes are processed to this place, please prepare yourself for the cable connections.
(5) If the inside of the converter or cable terminals are wetted or humidified, it may cause insulation
deterioration, which can result in fault or noise occurrence. So do not conduct wiring in the
open air on rainy days.
Also, be careful not to wet down the converter even in the case of indoor wiring, and complete
wiring work in a short period of time.
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6 F 8 A 0 9 3 4
Handling Precautions (continued)
(6) Observe the following precautions when you open the converter housing cover:
• Do not open the cover in the open air unprotected against rain or wind. This can cause
electric shock or cause damage to the flowmeter electronics.
• Do not open the cover under high ambient temperature or high humidity
conditions or in corrosive atmospheres. This can cause deterioration of system
accuracy or cause damage to the flowmeter electronics.
(7) Since a varistor is built in converter, do not conduct a withstand voltage test for the
converter.
In addition, the voltage for checking the insulation of the converter must be 250VDC or
lower.
(8) This product may cause interference to radio and television sets if they are used near the
installation site. Use metal conduits etc. for cables to prevent this interference.
(9) Radio transmitters such as transceivers or cellular phones may cause interference to the
flowmeter if they are used near the installation site. Observe the following precautions when
using them:
• Close a transmitter cover before using a transceiver.
• Do not use a transceiver whose output power is more than 5 W.
• Move the antenna of a transceiver or a cellular phone at least 50 cm away from the
flowmeter and signal cables when using it.
• Do not use a radio transmitter or a cellular phone near the flowmeter while it is
operating online. The transmitter or cellular phone’s output impulse noise may interfere with
the flowmeter.
• Do not install a radio transmitter antenna near the flowmeter and signal cables.
(10) For reasons of flowmeter failure, inappropriate parameters, unsuitable cable
connections or poor installation conditions, the flowmeter may not operate properly. To
prevent any of these problems causing a system failure, it is recommended that you have
preventive measures designed and installed on the flowmeter signal receiving side.
* We assume no responsibility for nonconformity caused by violation of precautions described in
this manual or used in violation of the installation method and the operation method stipulated in
a relevant ordinance or other regulations.
－ 7 －
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6 F 8 A 0 9 3 4
Table of Contents
1. Product Inspection and Storage............................................................................................................................ 11
1.1 Product Inspection......................................................................................................................................... 11
1.2 Storage.......................................................................................................................................................... 11
2. Overview.................................................................................................................................................................. 12
3. Names of Parts........................................................................................................................................................ 13
3.1 Appearance OF LF516/LF546....................................................................................................................... 13
3.2 Construction of the terminal blocks................................................................................................................ 14
4. Installation............................................................................................................................................................... 15
4.1 Notes on Selecting the Installation Location.................................................................................................. 16
4.2 Mounting Procedure ...................................................................................................................................... 17
4.2.1
4.2.2
Pipe checks.................................................................................................................................... 17
Installation Procedure..................................................................................................................... 19
4.3
4.4
Piping Connections ....................................................................................................................................... 21
Grounding………………………………………………………………………………………………………………24
5. Wiring ...................................................................................................................................................................... 25
5.1 Cables ........................................................................................................................................................... 27
5.2 External Device Connections and Grounding................................................................................................ 28
5.3 Notes on Wiring............................................................................................................................................. 29
5.4 Wiring ............................................................................................................................................................ 30
5.4.1 Terminal Treatment of Cables......................................................................................................... 30
5.4.2 Cable Connection............................................................................................................................ 31
5.5 Digital I/O Connections.................................................................................................................................. 32
6. Operation................................................................................................................................................................. 33
6.1 Preparatory check ......................................................................................................................................... 33
6.2 Zero Adjustment ............................................................................................................................................ 34
7. LCD Display and Controls...................................................................................................................................... 35
7.1 Name and Function of Each Part of LCD Display.......................................................................................... 35
7.2 Display Format .............................................................................................................................................. 38
7.3 Basic operations............................................................................................................................................ 42
7.3.1 Mode Change.................................................................................................................................. 42
7.3.2 Setting and Calibration .................................................................................................................... 46
7.4 Configuration Items Selection Table.............................................................................................................. 50
7.5 Password input.............................................................................................................................................. 52
8. Parameter Settings................................................................................................................................................. 53
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8.1 Parameter Setting Items................................................................................................................................ 53
8.2 Check/Change of Parameters ....................................................................................................................... 54
8.2.1 Menu Configuration Selection Screen ............................................................................................. 54
8.2.2 Exciting Current Value..................................................................................................................... 55
8.2.3 Meter Size ....................................................................................................................................... 56
8.2.4 Exciting Frequency.......................................................................................................................... 58
8.2.5 Flow Direction Setting...................................................................................................................... 58
8.2.6 Display Setting ................................................................................................................................ 59
8.2.7 Custom Coefficient Setting.............................................................................................................. 63
8.2.8 Custom Unit Setting......................................................................................................................... 64
8.2.9 Span (Range).................................................................................................................................. 65
8.2.10 Damping Constant........................................................................................................................... 71
8.2.11 Rate-Of-Change Limit and Control Limit Time................................................................................. 72
8.2.12 Low Cutoff ....................................................................................................................................... 74
8.2.13 Display Low Cutoff........................................................................................................................... 75
8.2.14 Still Water Zero Adjustment............................................................................................................. 76
8.2.15 Manual Zero Adjustment ................................................................................................................. 77
8.2.16 4-20mA Alarm Output Setting.......................................................................................................... 78
8.2.17 Output Low Limit Setting ................................................................................................................. 79
8.2.18 Digital Output................................................................................................................................... 80
8.2.19 Digital Input ..................................................................................................................................... 82
8.2.20 Count Rate (Pulse Rate), Pulse Width Setting Mode and Pulse Width ........................................... 84
8.2.21 Preset Count ................................................................................................................................... 87
8.2.22 Preset Mode.................................................................................................................................... 89
8.2.23 Flow Rate High/Low Alarm and High-High/Low-Low Alarm............................................................. 90
8.2.24 Mag-Prover-Self Diagnosis ON/OFF Setting................................................................................... 92
8.2.25 Fixed Value Output.......................................................................................................................... 93
8.2.26 Password Setting............................................................................................................................. 96
8.2.27 LCD Adjustment .............................................................................................................................. 98
8.2.28 Switch Position Setting.................................................................................................................... 99
8.2.29 Communication Setting ................................................................................................................. 100
8.3
Parameter initial settings list…………………………………………………………………….………………….101
9. Mag-Prover-Calibration ........................................................................................................................................ 103
9.1 Calibration Items.......................................................................................................................................... 103
9.2 Converter Using Mag-Prover’s Built-In Signal Source................................................................................. 104
9.2.1 0 % Flow Rate Calibration (Zero Calibration) ................................................................................ 104
9.2.2 50 % Flow Rate Calibration ........................................................................................................... 105
9.2.3 100 % Flow Rate Calibration (Span Calibration) ........................................................................... 105
9.2.4 Checking the Excitation Current .................................................................................................... 105
10. Functional Description......................................................................................................................................... 106
10.1 Digital I/O Specifications.............................................................................................................................. 107
10.2 Totalizer and Pulse Output.......................................................................................................................... 108
10.3 Multi-range Function.................................................................................................................................... 112
10.4 Flow Rate High/Low, High-High/Low-Low Alarm Output ............................................................................. 117
10.5 Preset Count Function................................................................................................................................. 119
10.6 Remote Zero Adjustment............................................................................................................................. 124
10.7 Remote Selection of Fixed Value Output..................................................................................................... 124
10.8 Converter Failure Alarm .............................................................................................................................. 125
10.9 Multiple range high/low limit alarm function (option).................................................................................... 126
10.10 Custom unit function.................................................................................................................................... 128
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11. Communications Function .................................................................................................................................. 131
11.1 Connections with HHT Terminal.................................................................................................................. 131
11.2 Procedures for Communication with HHT ................................................................................................... 132
11.3 Notes on Communications .......................................................................................................................... 133
12. Self-Diagnosis and Alarms.................................................................................................................................. 134
12.1 Self-Diagnosts............................................................................................................................................. 134
12.2 Output Status for Errors and Alarms............................................................................................................ 137
13. Maintenance and Troubleshooting..................................................................................................................... 138
13.1 Maintenance................................................................................................................................................ 139
13.2 Troubleshooting........................................................................................................................................... 140
13.2.1 Flow rate is not indicated............................................................................................................... 140
13.2.2 Flow rate indication is not correct. ................................................................................................. 141
13.2.3 Flow rate indication is not stable.................................................................................................... 142
13.2.4 When switch operation is unable................................................................................................... 143
14. Principle of Operation.......................................................................................................................................... 144
15. Specifications....................................................................................................................................................... 145
15.1 Specifications .............................................................................................................................................. 145
15.2 Model Number Table................................................................................................................................... 149
16. Outline Drawing.................................................................................................................................................... 151
Appendix 1..................................................................................................................................................................... 152
Appendix 2 ....................................................................................................................................................................154
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1. Product Inspection and Storage
1.1 Product Inspection
LF516/LF546 electromagnetic flowmeter is shipped in a cardboard container filled with shock-absorbing
materials. Open the package carefully and check as follows:
„ Make sure the following items are included in the package.
„ Inspect the flowmeter for indications of damage that may have occurred during shipment.
„ Make sure the type and specifications of the flowmeter are in accordance with the ordered
specifications.
If you cannot find the items listed above or any problem exists, contact your nearest Toshiba
representative.
1.2 Storage
To store the electromagnetic flowmeter after opening the package, select a storing place as follows
and keep it under the conditions described below:
CAUTION
(1) Avoid places where there is direct sunlight, rain or wind.
(2) Store the product in a well-ventilated place. Avoid places of extremely high humidity or
extremely high or low temperature. The following environment is recommended:
• Humidity range: 10 to 90% RH (no condensation)
• Storage temperature: –25 to +65° C
(3) Avoid places where vibrations or mechanical shock occur.
(4) If it leaves the cover of converter open while being stored, gradual deterioration of circuit
isolation can be caused. And then don’t open the cover until it is connected with wires.
(5) To put the flowmeter temporarily on the floor, place it carefully with something, such as
stopper, to support it so that the flowmeter will not topple over.
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2. Overview
LF516/LF546 electromagnetic flowmeter can be use in the following hazardous (classified)
locations.
ClassⅠ, Division 2, Groups A, B, C and D,
ClassⅡ, Division 2, Groups E, F and G
ClassⅢ
This product is electromagnetic flowmeter that measure the volumetric flow rate of conductive fluid using
Faraday's law of electromagnetic induction.
The device consists of two units: the detector, through which the fluid to be measured flows, and the
converter, which receives the electromotive force signals from the detector, then converts the signals
into the 4–20 mA dc signal.
Features
With a linear relationship between the flow rate and output signal, the electromagnetic flowmeter is
featured as an easy-to-read indicator. In addition to this feature, it has the following outstanding features:
(1) Low electric conductivity fluid (Electric conductivity 0.01μS/cm or more) can be measured
(2) Wide flow velocity range setting, such as a flow velocity range of 0~0.5 and 0~10m/s, is achieved.
(3) This flowmeter can be used to measure fluid even if it contains high concentration of slurry
・Ceramics is used for the detector pipe as standard.
・The unique Noise-Sentry filter circuit and its advanced Arithmetic Logic Unit (ALU)
enables you to obtain a stable output.
(4) Full graphic electronically rotatable LCD that enables display of a large amount of information
1. With a large amount of a maximum of 9 characters x 7 lines, you can easily check various
displays including bar graphs and alarm indications.
2. The backlight allows you to read the indicator easily.
(5) Use of infrared switches
• Use of infrared switches allows you to perform various operations, without opening the converter
housing cover.
(6) Intelligent functions
• The widely used HART protocol*1 communications system is used as a standard feature.
• This product supports PROFIBUS*2 communication by option.
* 1 HART protocol:
“HART” stands for Highway Addressable Remote Transducer and is a communication protocol
recommended by HCF (HART communication Foundation) for industrial sensors.
* 2 PROFIBUS:
PROFIBUS, which stands for PROCESS FIELDBUS, is a kind of field bus that is approved by
nternational standard IEC61158. The electromagnetic flowmeter supports PRFIBUS PA for process
automation.
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6 F 8 A 0 9 3 4
3. Names of Parts
IMPORTANT
The cable connections are not provided in the conduit port of this apparatus.
Please prepare yourself for the cable connections, which could be used in Division2 hazardous locations.
3.1 Appearance of LF516/LF546
Converter
Terminal block cover
Display section
For power cable
Control key
(Control panel)
For current output cable
Raised portion
Arrow nameplate
Ground terminal
Detector
Figure 3.1.1 Appearance of LF516/LF546
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3.2 Construction of the terminal blocks
Terminal Block Construction of LF546 Converter
When you remove the terminal block cover shown in the figure "Appearance of LF516/LF546", you can
see the converter terminal block as shown below.
Internal grounding
terminal
Power supply terminal
Fuse
Digital output
terminal
0.8A(T)/250V
External grounding
terminal
Digital input
terminal
Current output terminal or
PROFIBUS* terminal
*Option
Signal common
termnal
CAUTION
The label shown left is placed near the terminal board
for power supply to this equipment.
Be alert to electric shock.
Figure 3.2 Terminal Block Construction of LF546
－ 14 －
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4. Installation
Safety Precautions for Installation
WARNING
„ Do not activate live circuits under environment of explosive atmospheres.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not use parts of other products.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Do not activate circuits While assembly of all components is not over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the
Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing
3S8A2699 (Refer to Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
CAUTION
„ Turn off mains power before working
„ Use an appropriate device to carry and install
on pipes.
the LF516/LF546.
If his product falls to the ground,
injury, or
malfunction of or damage to the
Working on pipes while
power is applied can cause
electric shock.
DO
DO
product, can be caused.
„ Do not modify or disassemble the
„ Ground the LF516/LF546
unnecessarily.
independently from power equipment.
(100 ohm or less ground resistance)
Modifying or
disassembling this product
can cause electric shock,
Operating this product without
grounding can cause electric shock
malfunction or damage to
or malfunction.
DON’T
DO
this product.
„ Do not work on piping and wiring
with wet hands.
The label shown left is placed
near the terminal board for
power supply to the converter.
Wet hands may result in
electric shock
DON’T
Be alert to electric shock
－ 15 －
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4.1 Notes on Selecting the Installation Location
This product is designed for the following environment.
・Indoor and outdoor installation
・Altitude:Up to 2000m
・Ambient temperature:－10 to ＋50℃
・Humidity range:10 to 90%(no condensation)
・Regulation of power voltage:±10%
・Pollution degree 2
・Structure:IP67 and NEMA 4X
Do not store or install the flowmeter in :
1. Places within the immediate proximity of equipment producing electrical interference (such as
motors, transformers, radio transmitters, electrolytic cells, or other equipment causing
electromagnetic or electrostatic interference).
2. Where there is direct sunlight.
3. Where excessive vibration or mechanical shock occurs.
4. Where high temperature or high humidity conditions obtain.
5. Where corrosive atmospheres exist.
6. That can be submerged under water.
7. Where there is a sloped floor. To put the flowmeter temporarily on the floor, place it carefully
with something, such as a block, to support it so that the flowmeter will not topple over.
8. Places of too great an elevation or constricted areas where clearance for installation or maintenance
work is not provided.
9. Avoid places where fluid runs in a pulsating form.
10. Design piping so that the detector pipe is always filled with fluid, whether the fluid is flowing
or not.
11. The detector has no adjustable piping mechanism. Install an adjustable short pipe where needed.
12. Chemical injections should be conducted on the downstream side of the flowmeter.
13. Places where there is following factors.
◆Factors to impede infrared switch to operate properly
・Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
・Place where brightness changes suddenly such as lighting being turned ON/OFF
・Dense smoke or steam near the control panel
・Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and haze due to
their attachment
・Light reflecting object near the control panel, or reflecting object such as metal plate placed opposing
to the control panel
When any of above factors is considered, take a measure for the proper operation of infrared switch such
as to place a cover or to secure a space for at least a person to stand in front of the control panel.
When unable to avoid above factors, operate the EMF converter removing the factor by covering the
control panel by hand so that light does not shine on it, by cleaning those attached on the control panel,
or by standing in-between the reflecting object and the control panel to block the light.
－ 16 －
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4.2 Mounting Procedure
1. Avoid places within the immediate proximity of equipment producing electrical interference
(such as motors, transformers, radio transmitters, electrolytic cells, or other equipment
causing electromagnetic or electrostatic interference).
2. Avoid places where excessive pipe vibration occurs.
3. Avoid places where fluid runs in a pulsating form.
4. Avoid places where there is direct sunlight. If this is unavoidable, use an appropriate shade
5. Avoid places where corrosive atmospheres or high humidity conditions obtain.
6. Avoid places of too great an elevation or constricted areas where clearance for installation or
maintenance work is not provided.
7. Design piping so that the detector pipe is always filled with fluid, whether the fluid is flowingor
not.
8. The detector has no adjustable piping mechanism. Install an adjustable short pipe where needed.
9. Chemical injections should be conducted on the downstream side of the flowmeter.
4.2.1 Pipe checks
(1)Before installing pipes, check for any leaning or misplacement (or eccentricity) as illustrated in Figure
4.1. An attempt to unreasonably connecting pipes that are inclined may lead to a detector breakdown or
fluid leakage. Connecting pipes in an eccentric state may also cause local wears and tears of linings and
grounding rings, as well as measurement errors.
Before installing pipes, make sure to flash the interior of the pipes to remove deposited matters.
Eccentricity
Inclination
(a) Pipe leaning
(b) Pipe axis misplacement (or eccentricity)
Figure 4.1 Pipe leaning and axis misplacement
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6 F 8 A 0 9 3 4
(2) Preventing an Empty Pipe Condition
Fix the relevant pipes installed on both sides of the detector by attach fittings, etc. to support the pipe.
By supporting the pipes, not only the pipe vibration is reduced but also the damage to the pipes by the
electromagnetic flowmeter's weight and the fluid mass (see Figures 4.2 and 4.3).
Pipe support fittings
Pipe support fittings
Figure 4.2 Example of Pipe Fixing Procedure
Figure 4.3 Model Diagram of Unsupported Pipes
－ 18 －
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4.2.2 Installation Procedure
To mount the LF516/LF546, place it between the upstream and downstream pipe flanges and tighten
it with flange bolts and nuts. See Figure 4.4 and follow the procedure below:
1. Insert two lower mounting bolts through the clearance holes in the upstream (or downstream)
pipe flange.
2. Install a packing next to the upstream (or downstream) flange face and the other packing next
to the downstream (or upstream) pipe flange. The two mounting bolts can now be guided
through the clearance holes in the downstream packing and flange.
3.
Place the LF516/LF546 flowmeter detector between the two flange packings, with the flowmeter
detector body above the two bolts. The flowmeter must be oriented in accordance with the
flow direction arrow.
4. .Install the two upper mounting bolts through the clearance holes in the upstream and downstream
packings and flanges. Then install the remaining mounting bolts depending on the flange pattern
used.
5. Thread nuts on both ends of the 4 (or more) mounting bolts, finger tight. (See Table 4.1 Bolt length
and tightening torque)
6. While centering the flowmeter with the longitudinal axis of the pipeline, tighten the nuts with a
wrench diagonally across in even increments. (See Table 4.1 Bolt length and tightening torque)
Note that the flowmeter detector pipe axis must be aligned with the pipeline axis on both upstream and
downstream sides. This is essential to have stable characteristics of flow measurement (especially for
flowmeters with meter sizes of 50 mm or less).
IMPORTANT
When high-temperature fluid is being measured, radiant heat from the detector pipe surface and
adjoining pipes may cause the ambient temperature of the converter to go above 50 °C. If the
ambient temperature goes above 50° C, try to lower the temperature by measures such as wrapping
heat-insulating materials over the detector pipe and adjoining pipes.
Converter
Detector
Packing
Packing
Upper mounting bolts
Flow direction
Lower mounting bolts
Upstream flange
Downstream flange
Figure 4.4 LF516/LF546 flowmeter piping connections
－ 19 －
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Table 4.1 Bolt length and Nut tightening torque
ANSI class 150
Through Bolts
ANSI class 300
Through Bolts
Tightening
torque
[N･m]
Tightening
torque
[N･m]
Meter size
Dia- Length
meter [mm]
Dia-
Length
P.C.S
P.C.S
meter
[mm]
155
180
215
220
240
255
15mm 1/2”
25mm 1”
40mm 11/2”
50mm 2”
80mm 3”
100mm 4”
4
4
4
4
4
8
1/2”
1/2”
1/2”
5/8”
5/8”
5/8”
150
170
195
215
225
235
4
4
4
8
8
8
1/2”
5/8”
3/4”
5/8”
3/4”
3/4”
25 to 31
53 to 66
12 to 15
21 to 26
32 to 40
52 to 65
71 to 88
52 to 65
96 to 120
52 to 65
85 to 106
125 to 156
DIN/BS 10, DIN/BS 16
JIS 10K
Through Bolts
Through Bolts
Tightening
torque
[N･m]
Tightening
torque
[N･m]
Meter size
Dia- Length
meter [mm]
Dia-
Length
P.C.S
P.C.S
meter
[mm]
150
170
190
200
210
215
15mm
25mm
40mm
50mm
80mm
100mm
4
4
4
4
8
8
M12
M12
M16
M16
M16
M16
150
165
190
205
210
220
16 to 19
27 to 34
58 to 72
78 to 98
54 to 67
79 to 99
4
4
4
4
8
8
M12
M16
M16
M16
M16
M16
10 to 13
22 to 28
32 to 40
43 to 53
27 to 34
37 to 46
－ 20 －
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6 F 8 A 0 9 3 4
4.3 Piping Connections
(1) Required Pipe Length
If various joints are used upstream of the detector outlet, the straight pipe length
as shown in Table 4.2 is required.
Table 4.2 Required straight pipe length on the upstream side
L=5D
L=10D
(5) Other valves (not fully opened)
(1) 90°bent
L
L
L
(2) Tee
(3) Diffuser
L
(4) Fully opened sluice valve
L
L: Required straight pipe length—straight pipe length plus half length of the detector.
D: Nominal bore size (diameter)
NOTES
The length of a reducer, if connected, can be counted as a part of the straight pipe length.
No straight pipe length is needed on the downstream side. If a butterfly valve is installed downstream
of the detector, do not let the valve plate protrude into the pipe of the detector
－ 21 －
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(2) Pipe Orientation
The detector may be installed in horizontal, vertical or sloping pipe runs as shown in
Figure 4.5. However, except for horizontal installation, fluid should flow from lower
to upper directions. See Figure 4.5.
Flow direction
(b)
(a) Horizontal pipe installation
(b) Vertical pipe installation
(c) Sloping pipe installation
Detector
(c)
(a)
Ground surface
Figure 4.5 Detector Piping Orientation
The electrodes should be positioned horizontally against the ground surface in any piping
installation. See Figure 4.6.
Don’t rotate.
Detector
Ground surface
Figure 4.6 Installation position of the detector
－ 22 －
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(3) Flow Direction
Install the detector in accordance with the flow direction arrow on the detector. See Figure
4.7. If the actual flow runs opposite to the specified flow direction, the following
display and output appears.
For single range measurement,
・LCD display:
Instantaneous flow rate ------------- indicates negative values,
Totalized flow ------------------------ no counts added.
Current output ------------------------ 4.0mA output,
Pulse output --------------------------- No pulses
・Outut:
For bidirectional range measurement, the flow in opposite direction results in a positive
output value. See 10.3, “Multi-range Functions.”
Flow direction arrow
Figure 4.7 Flow direction arrow on the detector
(4) Preventing an Empty Pipe Condition
Design an upright pipe run (Figure 4.8) or sufficient head pressure (Fig. 4.9) at the
downstream detector outlet if there is a possibility of the detector pipe becoming emptied.
Upright pipe run
Detector
Figure 4.8 Detector with an upright pipe run at downstream outlet
Detector
Figure 4.9 Detector with sufficient head pressure at downstream outlet
－ 23 －
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4.4 Grounding
CAUTION
„ Do not wire cables and replace parts
„ Do not work on piping and wiring with wet hands.
when power is supplied.
Wet hands may result in electric shock.
Wiring work and replacing
parts in the power-on state
may cause electric shock.
DON’T
DON’T
Ground as shown in Figure 4.10. Make the grounding wire as short as possible. Use
grounding wire material of IV wire 5.5mm2 or more. Do not share a grounding wire
with other instruments where grounding current may flow. (An independent
grounding is preferable.)
Piping of non-conductive material
Conductive material pipe
Example: Metal, etc.
Example: Resin or metal piping whose
inside is resin-lined, etc.
Grounding terminal
Grounding wire
grounding resistance
100Ωormore
• If the piping material is non-conductive, perform
grounding (grounding resistance 100Ω or less).
• If the piping material is conductive, connect
the grounding wires to the both ends of the
piping flange.
Figure 4.10 Grounding the LF516/LF546 Type
－ 24 －
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5. Wiring
Notes on wiring
WARNING
„ DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS LOCATION IS KNOWN TO
BE NONHAZARDOUS.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not activate circuits while assembly of all components is not over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the Canadian
Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing 3S8A2699 (Refer to
Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
－ 25 －
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6 F 8 A 0 9 3 4
CAUTION
„ Install a switch and fuse to isolate the
„ Turn off mains power before conducting
wiring work.
Wiring while power is applied
can cause electric shock.
LF516/LF546 from mains power.
Power supply from mains
power can cause electric shock
or circuit break-down.
DO
DO
„ Do not work on piping and wiring with
„ Ground the LF516/LF546
independently from power equipment.
(100 ohm or less ground resistance)
Operating this product without
grounding can cause electric
wet hands.
Wet hands may result in
electric shock
DON’T
DO
shock or malfunction.
„ Do not conduct wiring work with bare
„ For the power supply wiring and grounding
wiring, use crimping terminals with
insulated sleeve.
hands.
Remaining electric charge
There is a risk of electric shock
due to drop-off or loosing, and a
even if power is turned off can
still cause electric shock.
risk of fire and equipment
DO
DON’T
trouble due to heat generation.
„ Do not modify or disassemble the
LF516/LF546 unnecessarily.
Modifying or
The label shown left is
placed near the power
supply terminal on the
converter.
disassembling this product can
cause electric shock,
malfunction of or damage to
Be alert to electric shock.
DON’T
this product.
Flowmeter accuracy may be affected by the way wiring is executed. Proceed with correct wiring taking
the precautions in following pages.
－ 26 －
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CAUTION
(1) Select the cable run location so they are away from electrical equipment (motors, transformers,
or radio transmitters) which causes electromagnetic or electrostatic interference.
(2) Deterioration of flowmeter circuit insulation occurs if the converter interior or cable ends get wet
or humidified. This in turn causes malfunction of flowmeter or noise problems. Avoid a rainy
day if the flowmeter is to be installed outdoors. Even indoors, prevent water from splashing over
the flowmeter. Try to finish the wiring as quickly as possible
(3) The converter has a surge arrestor/protector installed inside. Therefore, do not conduct a
withstand voltage test for the converter. To check the insulation of the converter, use a voltage
of 250Vdc or less.
(4) After wiring, be sure to install the terminal block protection cover.
5.1 Cables
Use the kind of cables shown in Table 5.1 to wire the converter.
Table 5.1 Installation Cables
Nominal
cross-sectional
area
Finished
outer
diameter
Name
Cable name
Description
CVV JIS C
3-core vinyl sheathed cable or 2-core vinyl
sheathed cable
3401,IEC60695,IEC607
54,IEC60227,IEC60245
or equivalent
Power cable
2 mm²
11~13mm
The number of conductors the cable contains differs depending on the
specification of the output signal cable.
Use a shielded cable of finished outer diameter 11 to 13mm and nominal
cross-sectional area 1.25mm2.
Output signal
cable
CVV-S JIS -258-C or
equivalent
－ 27 －
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5.2 External Device Connections and Grounding
The terminal board connections of LF516/LF546 Flowmeter are shown in Figure 5.1. Proceed with wiring
as described in Section 5.4, “Wiring Procedure.”
NOTE:
• When 3-core power cabel is used, do
not ground from the external
Power cable (CVV)
grounding terminal.(Perform grouding
* For a 2-core cable, L1 and
at the receving side only).
L2 only.
• Only when a 2-core power cable is
used, perform grounding from the
external grounding terminal.
[Instrumentation panel: Customer]
(Receiving side)
Power supply
Ground terminal
Wiring breaker
(double-pole/single-throw)
IV wire
5.5mm2 or more
(100 ohm or less ground
resistance)
(100 ohm or less
ground resistance)
Current output
(4-20mAdc)
or PROFIBUS
Converter unit
Digital output 1
Common for DI/DO
Digital output 2
Digital input
(20 to 30 Vdc)
NOTE:
To avoid 2-point grounding,
ground the shield of the output
cable basically at the receiving
side.
Output signal cable
(CVV-S)
(100 ohm or less
ground resistance)
Figure 5.1 External Wiring Schematic Diagram
* Use a heavy copper braid or wire (cross-sectional area 5.5 mm2 minimum) to ground the terminal
and make it as short as possible as shown in Figure 5.1 for grounding.
Also, Avoid a common ground where earth current may flow. (An independent ground is
preferable.)
*The converter has no power switch. Install the power switch at the system side. Be sure to use a
double-pole/single-throw (both disconnection) wiring breaker.
－ 28 －
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5.3 Notes on Wiring
Notes on Instrumentation-Converter Wiring
• To avoid 2-point grounding, ground the shield of output cable basically at the receiving side.
• Use a grounding wire of IV wire 5.5mm2 or more. The size of the external grounding terminal screws is M4.
Do not share a grounding wire with other instruments where grounding current may flow. (An
independent grounding is preferable.)
• Power cable
When a 3-core cable is used: Ground with the FG terminal.
When a 2-core cable is used: Use an external grounding terminal and make the cable as short as possible.
－ 29 －
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5.4 Wiring
IMPORTANT
The cable connections are not provided in the conduit port of this apparatus.
Please prepare yourself for the cable connections which could be used in Division2 hazardous locations.
CAUTION
„ Do not wire cables and replace parts when
„ Do not work on piping and wiring with wet hands.
power is supplied.
Wet hands may result in electric
shock.
Wiring work and replacing
parts in the power-on state
may cause electric shock.
DON’T
DON’T
5.4.1 Terminal Treatment of Cables
Follow the procedures below to treat the terminals (at the converter side) of various cables and install the
cables to the terminal block. Use appropriate cables based on the description in Section 5.1 "Cables."
Crimp a round type insulated crimp-type terminal to the end of the cables.
(1) Power cable, current output cable, and digital I/O cables
The necessary cables should be ordered from the person responsible for the installation. Strip the sheath of
each conductor as shown in Figure 5.6 and attach a crimping terminal with insulated sleeve to it. The size
of the crimping terminal is M4:
• Connect the power cable to terminal blocks L1 and L2.
• Connect the current output cable to terminal blocks + and -.
• Connect the digital I/O cable to terminal blocks D1, D01, D02 and COM, as required.
M4 size Crimping terminal
25~45mm
Figure 5.6 Terminal Treatment of Power Cable, Current Output Cable and Digital I/O cable
－ 30 －
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5.4.2 Cable Connection
Connect and install the terminal-treated cables to the terminal block by the following procedure.
*Connect the cables to the terminal block securely. A loose connection may cause incorrect
measurement. After connecting a cable, try to pull it to check whether it has been connected
securely.
Referring to Section 5.2 "External Device Connections and Grounding", connect each cable to the
terminal block. Tighten the screws of the terminal block tightly to ensure the secure connection. A
loose connection may cause incorrect measurement. After connecting a cable, try to pull it to see
whether it has been connected securely.
Phillips screwdriver
*The appropriate torque for tightening
the terminal board screw is 1.2 N•m.
Terminal block
Figure 5.10 Connecting a Cable to Terminal Block
－ 31 －
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5.5 Digital I/O Connections
Digital I/O terminals consist of contact output terminals (DO1 and DO2), voltage signal input
terminal (DI), and signal common terminal (COM). Each terminal (DO1, DO2 and DI) is isolated from
internal circuits. Terminal (COM) is the signal common for the other three terminals (DO1, DO2 and DI).
Functions can be assigned for each terminal with the LCD control keys. See Chapter 10, “Digital I/O
Functions.”
To connect an electromagnetic relay or counter to the contact output terminal (DO1 or DO2), put a
surge-absorbing diode into the input circuit of the relay or counter. See Figure 5.3 for an example of
electromagnetic counter connection.
Note2
Solidstate relay
Transistor open collector
Note2
Photo-coupler
Resistor
Converter
COM
DI
DO2
DO1
Note1
Surge-absorbing diode
Power supply
24 V dc
－
＋
Electromagnetic counter
Note2
(Power supply-built-in electronic counter)
Figure 5.3 Electromagnetic Counter Connection Example
Note 1: Use a surge-absorbing diode of the rating: current rating 1A and voltage rating 200 V
minimum.
Note 2: When a power supply-built-in electronic counter is used, the serge-absorbing diode is not
required.
－ 32 －
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6. Operation
CAUTION
„ Do not touch the terminal board when power
„ Do not touch the main body when high
is supplied.
temperature fluid is being measured.
The fluid raises the main body
temperature and can cause burns.
Touching the terminal board
when power is supplied can
cause electric shock.
DON’T
DON’T
6.1 Preparatory check
Follow the procedure described below to prepare before starting the flow measurement
System Check
Check the items listed below
„ Check the wiring between the converter and related instruments.
„ Make sure all the bolts of connection flanges on which the flowmeter is mounted
securely tightened.
„ Make sure the direction of flow arrow is in accordance with actual flow.
„ Make sure the flowmeter is grounded with 100 ohm or less ground resistance.
„ Make sure the converter housing covers are securely tightened.
Placing System On-Stream
„ Let the fluid go through the detector pipe. (Note 1)
„ When the detector is filled with the fluid, stop the fluid and keep it still in the detector pipe.
Supplying Electric Power
„ Make sure the power supply is as specified.
Checking Converter Parameters
„ Check the configuration parameter settings. Refer to Chapter 7, “LCD Display and
Controls,” Chapter 8, “Configuration Parameter Setting,” and Chapter 11,
“Communications Function.”
Zero Adjustment
„ Wait for 30 minutes to warm up the flowmeter. Then making sure the fluid holds still in the
detector pipe before starting the zero adjustment.
„ Refer to 6.2, “Zero Adjustment.”
On-line measurement
„ After checking the items and conducting the zero adjustment as listed above, let the fluid go
through the detector pipe. Output (4–20 mA dc) directly proportional to the flow rate can be
obtained.
－ 33 －
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Note 1: If the detector pipe is not filled with the fluid to be measured, the flow rate will be
indefinite and unable to be measured. Before using the flowmeter, be sure to fill the
detector pipe the fluid to be measured.
6.2 Zero Adjustment
To conduct zero adjustment of the flowmeter, the fluid in the detector pipe must be held still.
There are three different ways to start the zero adjustment:
(1) Pressing a combination of control keys for the model with LCD display
See 8.2.14 “Still Water Zero Adjustment”
(2) Sending a command signal from a HART communications device (a communication
device such as hand-held terminal AF900 is required)
See the instruction manual of hand-held terminal you use.
(3) PROFIBUS communication (a communication device for PROFIBUS is required)
See the instruction manual of communication device you use.
－ 34 －
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7. LCD Display and Controls
7.1 Name and Function of Each Part of LCD Display
The LDC display and infrared switches (hereafter, called "control key") in front of the converter allows
you to view or set various constants such as measured values and parameters.
Control key
LCD Display
(Control panel)
Figure 7.1 Display section of LF546
Instructions
The operation principle of infrared switch is to irradiate infrared to the front of control panel and detect
the reflection from finger when operating.
Normal operation is impeded depending on the conditions such as disturbing light from surroundings or
stain attached to the control panel. When unable to avoid such condition, operate the EMF converter in the
following manner.
Remove the factor to impede proper operation of infrared switch as below:
・Cover the control panel by hand so that light does not shine on it
・Clean the stain attached on the control panel
・Clean the stain on the finger or the gloves to operate the EMF converter, or wear gloves in light color
・When there is a reflecting object placed opposing to the control panel, stand in-between the reflecting
object and the control panel to block the light
Following are considered as the factors to impede infrared switch to operate properly.
・Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
・Place where brightness changes always such as ON/OFF of lighting
・Dense smoke or steam near the control panel
・Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and haze due to
their attachment
・Operation of the control panel by hands wearing gloves in dark color or stained fingers and gloves
・Light reflecting object near the control panel, or reflecting object such as metal plate placed opposing
to the control panel
－ 35 －
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●
LCD electronically rotatable display
8-line × 14-character liquid crystal display. The backlit display provides an easy-to-read
indication even under poor lighting conditions. Instantaneous flow rates or totalized flow in the
measurement mode or configuration parameters in the setting mode can be displayed. (Number of
LCD display dots: 128 x 128 dots)
①
②
①Measured Value Display 1
Displays a measured value of the type the operator has
selected.
②Measured Vale Display 2
Displays a measured value or setting value of the
type the operator has selected or displays an error message. If
an error message appears, the measured value or setting value
cannot be displayed (error message-precedence display).
－ 36 －
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●
Setting switch
The control keys allow you to perform converter control and setting, without opening the
converter housing.
These three controls keys function differently depending on the current display screen.
The functions of these control keys are displayed on the display screen.
In this product, the display method can be changed according to the converter installation
direction. For example, if the control keys are installed so that they are located above the display, they
can be displayed appropriately as shown below, by changing the display method.
ESC
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
ＥＳＣ
ＥＳＣ
Above the control keys
Left of the control keys
Right of the control keys
－ 37 －
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7.2 Display Format
In the measurement mode, the measured data is displayed using the menu items set by the Display 1
(DSPL1) and Display 2 (DSPL2).
(For display settings, see 8.2.6 "Display Setting.")
1. Flow rate / Flow velocity display
Numeric value･･･7 digits maximum including a decimal point are
- 1 0 . 0 0
m / s
displayed. (Up to 9999999)
4 significant digits (for the set span)
Unit･･･
7 digits maximum are displayed.
Flow direction･･･In the case of reverse direction, “－”is displayed.
In the case of forward direction, not displayed.
2. Totalized flow count display
1 2 3 4 5 6 7 8
F R D
Numeric value･･･8 digits maximum
(Up to 99999999)
Operation･･･ Counting in progress:
Counting stopped: ■is displayed
Counting direction･･･
is blinked
In the case of forward flow direction, "FRD" is displayed.
In the case of reverse flow direction, "REV" is displayed.
3. Totalized flow volume display
Numeric value･･･8 digits maximum including a decimal point are
displayed. (Up to 99999999)
1 2 3 4 . 5 6 7
3
Displayed to the least significant digit of the set
count rate.
F R D
m
Unit･･･
Operation･･･ Counting in progress:
Counting stopped: ■is displayed
Counting direction･･･
3 digits maximum are displayed.
is blinked
In the case of forward flow direction, "FRD" is displayed.
In the case of reverse flow direction, "REV" is displayed.
4. Totalized difference flow volume display
Numeric value･･･8 digits maximum including a decimal point are
displayed. (Up to 99999999)
1 2 3 4 . 5 6 7
3
Displayed to the least significant digit of the set
count rate.
+
m
Unit･･･
3 digits maximum are displayed.
Operation･･･
Counting in progress:
is blinked
Counting stopped: ■is displayed
Sign･･･
In the case the difference flow is in the forward direction, “+” is
displayed
In the case the difference flow is in the reverse direction, “−” is
displayed
－ 38 －
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Note 1: Totalized flow volume and totalized difference flow volume are displayed to the least
significant
digit of the set count rate.
(Example1)
When the count rate is 0.0001 m3:
When the measurement object flows through 0.0001(m3), inside counter counts 1.
Because inside counter is 8 digits at the maximum, the maximum of totalized flow
is 9999.999(m3). When inside counter exceeds the maximum, inside counter return
to 0, and continue totalization.
Inside counter(m3)
Max 8 digits
Totalized flow display(m3)
Max 8 digits (include decimal point)
0
1
000.0000 m3
000.0001 m3
000.1000 m3
100.0000 m3
1000.000 m3
9999.999 m3
1000
1000000
10000000
99999999
(Example2)
When the count rate is 10 m3:
When the measurement object flows through 10(m3), inside counter counts 1.
Because inside counter is 8 digits at the maximum, the maximum of totalized flow
is 99999999(m3). When inside counter exceeds the maximum, inside counter return
to 0, and continue totalization.
Inside counter(m3)
Max 8 digits
Totalized flow display(m3)
Max 8 digits (include decimal point)
0
1
00000000 m3
00000010 m3
00010000 m3
10000000 m3
99999999 m3
99999999 m3
1000
1000000
10000000
99999999
Note 2: Totalized difference flow volume shows the difference between the forward direction volume
and the reverse direction volume.
When the forward direction volume reaches the upper limit and returns to zero, the volume is
displayed as follows:
Forward direction volume: 1000
Reverse direction volume: -100
99999999
-100
99999899
0
-100
-100
Difference flow volume:
900
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5. Percent display
Numeric value･･･Within the range of +125.0% to −125%,
- 1 2 5 . 0
displayed to the decimal place of 0.1%.
%
Unit･･･
"%" fixed.
* If the value goes out of the display range, an error message appears.
6. Flow rate (When custom unit is selected)
- 1 0 . 0 0
* X X X / Y Y Y
Numeric value･･･
7 digits maximum including a decimal point
are displayed. (Up to 9999999)
4 significant digits: The value is obtained by
multiplying m3/min by the set coefficient
7 digits maximum are displayed.
Unit･･･
Flow direction･･･
In the case the flow is in reverse direction ,
“－” is displayed.
In the case the flow is in forward direction,
not displayed.
Identification charanter･･･ “*” is character to show the custom unit.
7. Range display
Numeric value･･･ The span of the range being used
1 0 . 0 0 0
m / s
Unit･･･
7 digits maximum are displayed.
When custom unit is selected, identification
character “*” is displayed.
R 1
Range･･･
The range being used is displayed as follows:
R1: Range 1
R2: Range 2
R3: Range 3
R4: Range 4
In the range display, the range currently used is displayed (any one of the ranges 1 to 4). The screen
example above shows that Range 1 is currently used.
When multi-range is selected, the displayed range changes automatically as the range used is changed.
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8. Bar graph display
Bar graph can be set only for Display 2.
0
100
Graph･･･ The measured value is displayed in bar graph.
The left side of the graph is RL (Range Low limit) and
the right side of the graph is RH (Range High limit).
Scale marks are displayed in increments of 25% inside
the graph.
R 1
Range･･･ The range number currently used is displayed.
*About Range type, percent display and percent value when bar graph is displayed
When percent display is used, the % value displayed depends on the flow direction. However,
the % value when bar graph is displayed is as shown in the table below.
% value in
percent display
% value in
bar graph
50%
Range type
Input signal
4−20mA output
Single(forward)
Forward direction
50%
Reverse direction
50%
50%
-50%
50%
12mA
Single(forward)
0%
50%
0%
4mA
(Output low lim value*)
Bidirectional
(forward/reverse) 50%
Bidirectional
(forward/reverse) 50%
Forward direction
12mA
12mA
Reverse direction
-50%
*The set value in 8.2.17 “Output Low Limit Setting” will be output.
• When communications function is used
When HART communication is used, a mark is displayed in the upper field on the display.
When PROFIBUS communication is used, if the communication is made between the PROFIBUS
option board and the converter main board, a mark is displayed in the upper field on the display in the
same way as in HART communication, while communication between the PROFIBUS option board
and the external bus, nothing is displayed.
Displayed when communications
function is used
- 1 0 . 0 0
m / s
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6 F 8 A 0 9 3 4
7.3 Basic operations
7.3.1 Mode Change
The converter provides the setting mode and calibration mode as well as the measurement mode. To
change the mode to the setting mode or to the calibration mode, push the switch. To return to the
SET
measurement mode, push the
switch from each menu.
ESC
● Measurement mode:
Mode to perform flow measurement.
Flow rate or volume of process fluid is displayed and outputted.
The flowmeter first goes to this mode when power is turned on.
● Setting mode:
Mode to check or set various parameters.
Various setting values can be displayed on the screen but the output is
always the flow rate of process fluid as in the measurement mode.
(See 7.4 “Setting and Calibration Items List” and 8.2 “Parameter
Check / Change” for details.)
● Calibration mode:
Mode to check the converter circuit.
The built-in simulation signal generator circuit can be used to check the
span of the range and check the excitation current value. The current
output varies in accordance with the simulation signal. Each digital
output retains its previous state when the converter is changed to the
calibration mode.
See 7.4, “Setting and Calibration Items List” and 9, “Calibration” for
details.
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○Flow of mode change
Note: When the screen is switched, let your
finger off the switch. If you keep pushing, the
mode returns to the measurement mode.
* (L) indicates that you can hold down the switch longer.
* <L> indicates that you must hold down the switch
longer.
Measurement mode
1.000
m/s
Hold down only the center switch
for 3 seconds or longer. (Note)
OK
Unlock procedure error(3 times)
12345678
FRD
ESC
CNT CTRL
12345678
FRD
CNT CTRL
DISPLAY
UNLOCK
CLR<L>
OK
12345678
FRD
PUSH SW
ESC
▲ ▲
CLR OK?
OK
PUSH SW
CNT:
CNT CTRL
SET:
SET MODE
V****
<L>
ESC CLR
NO
Cancel
Unlock
procedure
error
■
NO
▲
Counter control mode
CNT
Confirmation message
only for CLR
ESC CNT SET
V****:Version display
SET
ESC
MENU SEL
BASIC
To Next page
DETAILED
PREVIEW
ZERO ADJ
Numeric value setting screen
ZERO ADJ
PLS SET
EXC CUR
(L)
▼
ESC: Cancel
Data will not be saved.
0.2000
A
ESC
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
ESC
ESC
ESC
EXC CUR
OK
ESC
EXC CUR
0.2000
(L)
▼
0.2010
A
(L) (L)
ESC
▼
▲
A
NO
▲
▼
▼
SET OK?
ESC
(L)
(L)
▲
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
R:CAL
1 CAL
2 CAL 50%
3 CAL 100%
4 EXC DSPL
5 EXIT
OK
NO
0%
(L) (L)
▼
(L) (L)
Item selection screen
DO1 FUNC
ESC
▼
▲
▼
▲
DO1 FUNC
PLS FRD
NO
▼/▲
PLS OUT
A:DETECTOR
1 EXC CUR
2 SIZE
NO
3 EXC FREQ
4 FLOW DIR
5 EXIT
SET OK?
ESC
(L) (L)
▲
OK
NO
▼
Setting mode
EXIT OK?
OK NO
Special screen
OK/
Cursor at
lowest
digit
Adjustment / Calibration screen
CS UNIT
XXX/YYY
CS UNIT
AAA/BBB
Hold down the switch longer
ADJ READY
ZERO ADJ
NOW ZERO
OK
ADJUSTING
0.9
%
0.9
NO
SET OK?
ESC
(L) (L)
▼
%
NO
OK
NO
▲
ADJ OK?
<L>
OK
NO
ESC
ESC
After adjustment /
calibration
Move digit
To Measurement mode
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○ Pulse output setting mode
This mode is used to perform continuous parameter settings (automatic operation) regarding
pulse outputs. When these parameters are set, pulse output is ready to send out.
PLS WID
000.0
CNT RATE
0.00000
m3
MENU SEL
BASIC
DETAILED
PREVIEW
ZERO ADJ
PLS SET
DO1 FUNC
PLS OUT
PLS MODE
=MANUAL
PLS SET
MANUAL ms
(L) (L)
▲
(L) (L)
▲
(L)
(L)
▲
(L)
▼
ESC
▼
PLS MODE
=AUTO
* (L) indicates that you can hold
down the switch longer.
CNT CTRL
12345678
FRD
ESC
To Measurement mode
■
ESC CLR
(1) Digital Output 1 selection screen
The function for Digital Output 1 can be selected.
This screen shows functions related to pulse outputs only.
(For details of setting procedure, see 8.2.18.)
• PLS OUT (Pulse output)
• PLS FRD (Forward direction pulse output)
• PLS REV (Reverse direction pulse output)
(2) Count rate setting screen
Count rate can be set.
(For details of setting procedure, see 8.2.20.)
(3) Pulse width setting screen
When pulse width setting mode is MANUAL, the screen moves to Pulse width setting screen.
When pulse width setting mode is AUTO, the screen moves to Totalizer control screen.
(For details of setting procedure, set See 8.2.20.)
Note: Pulse width setting mode is set to AUTO when shipped from the factory.
(4) Counter control screen
This screen is used to start the totalizer.
If
is pushed, the screen returns to the measurement screen. (End of pulse output
ESC
setting mode)
(For details of operation procedure, see Section 10.2.)
Note: If
is pushed to return to the measurement screen while automatic screen
ESC
sequence in progress, the setting items entered so far are saved.
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○ Explanation about mode change
The converter usually works continuously in the measurement mode.
If you want to set parameters or perform calibration or adjustment, you have to go to the
setting mode.
To enter the setting mode, push the center switch for 3 seconds or more in the measurement
mode.
When you push the switch for 3 seconds or more, the display unlock screen appears.
Switch operation
Display example
DISPLAY
Description
Display unlock screen
UNLOCK
PUSH SW
V****
DISPLAY
UNLOCK
To unlock the display, push the switches in
the order indicated on the screen.
PUSH SW
V****
The pushed switch is highlighted.
PUSH SW
CNT:
CNT CTRL
SET:
SET MODE
Pushing
at the end, the display will
be unlocked and the mode change screen
appears.
CNT
ESC
SET
Note 1: If the order of switches to push was erroneous, UNLOCK FAILURE error message
appears and the screen return to the display unlock screen.
Mode return to the measurement mode in case of the third error.
When the center switch is pushed during error message indication, mode return to the
measurement mode immediately.
Note 2: V****shows the version number.
When the mode change screen appears, proceed as follows:
Enters the setting mode (setting configuration selection menu).
SET
CNT
Changes to the counter control screen and you can operate the totalizer.
Note: If password has been set, the password input screen appears when you move from the
mode change screen to the setting configuration selection menu (when you push
SET
switch), or when you move to the totalizer control screen (when you push
switch).
CNT
If the password you enter does not match, you cannot change some of the parameters. In
addition, when you operate the totalizer, you cannot use CLEAR switch.
(However, you can start or stop the totalizer.)
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○ Operation timeout function
If no operation is made for one minute or more while the converter is in the setting mode, the
mode automatically returns to the measurement mode unless the parameters are displayed on
the screen.
A:DETECTOR
1 EXC CUR
When no operation is made
for 1 minute, the mode
automatically returns to the
measurement mode.
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Menu screen
ESC
EXC CUR
0.2000
A
Parameter check screen
Parameter change screen
ESC
EXC CUR
The screen does not return
to the measurement mode.
0.2000
A
(Parameters
are
being
changed.)
7.3.2 Setting and Calibration
In the setting mode, you can select items, or check or change the setting values as described below.
When you push or to scroll up or down the numeric value or alphabet, or when push
to move the digit, you can execute continuous operation by holding down the relevant
switch longer. (Holding down the switch longer automatically executes the operation continuously.)
● Moving to the menu screen
Switch operation
Display example
Description
Mode change screen
PUSH SW
CNT:
CNT CTRL
SET:
SET MODE
SET
CNT
ESC
MENU SEL
BASIC
DETAILED
PREVIEW
ZERO ADJ
PLS SET
ESC
Pushing
in the measurement mode
SET
takes you to the menu configuration
selection screen.
For configuration, select BASIC or
DETAILED menu.
SET
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Switch operation
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
Description
from the menu configuration
selection screen takes you to the menu
screen.
Pushing
3 EXC FREQ
4 FLOW DIR
5 EXIT
The cursor is positioned at the function
display ([A: DETECTOR] in this example).
* This screen is an example when the
DETAILED menu is selected.
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
Pushing
or
while the cursor
is positioned at the function display changes
to another function display and its
corresponding menu item list.
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
When you push
, the cursor at the
function display disappears and the cursor
goes to the display field of the setting items
list.
ESC
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
Every time you push
, the cursor
rolls down by one item at a time. Pushing
further when the cursor is
positioned at the bottom causes the cursor to
return to the top item.
ESC
DSPL2
When you push
for the item the cursor positioned appears
and enables you to set / check the parameter.
, the setting screen
m/s
ESC
● Checking or changing the setting value
Switch operation Display example
Description
C:RANGE
Menu screen for function C
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
Push
R1.
to move the arrow mark to
7 EXIT
ESC
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Switch operation
Display example
Description
to select the item you want
R1
Push
to check or change.
The screen changes and the currently set
item appears for you to check.
10.0000
m/s
Pushing
screen.
returns you to the menu
ESC
ESC
R1
When you push
on the setting value and the screen is ready
to change the setting value.
, the cursor appears
10.0000
m/s
R1
Ready to change the setting value
10.0000
m/s
Pushing
increments the number in
the place where the cursor is positioned.
(Holding down the switch longer causes the
operation to continue.)
* Pushing
when the cursor is positioned
below the digit of unit will change the unit to the
next unit. In addition, if a natural number is used, a
decimal point as well as the numeric value appears.
R1
R1
Ready to change the setting value
10.0000
m/s
Pushing
moves the cursor to the
next digit.
Ready to change the setting value
05.0000
m/s
Change the setting value using
and
.
In this example, 5.000 m/s is set.
R1
Pushing
sets the data temporarily.
The cursor disappears and a message
05.0000
m/s
appears to confirm whether it is OK or not.
SET OK?
ESC
N O
O K
R1
If you want to cancel the operation, for
example, because the temporarily set data is
10.0000
m/s
incorrect, pushing
returns the
N O
temporarily set data to the previous value,
enabling you to change the setting value
again.
N O
Pushing
cancels the setting operation
ESC
and exits the setting screen.
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Switch operation
Display example
Description
when data is temporarily
R1
Pushing
set causes the data to be fixed and executed.
After the data is set, the cursor disappears,
enabling you to check the set value.
5.00000
m/s
ESC
C:RANGE
Pushing
screen.
returns you to the menu
ESC
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
ESC
7 EXIT
ESC
C:RANGE
Push
and then push
and move the cursor to “EXIT”
, a message appears to
confirm whether it is OK to exit or not.
When you push here, the screen
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
N O
does not move to the measurement mode
and returns to the menu screen.
When you push
7 EXIT
EXIT OK?
here, the screen
does move to the menu configuration
selection screen.
O K
N O
If you push
and returns to the measurement mode.
, the setting mode ends
O K
5.000
m/s
O K
12.345
m3
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7.4 Configuration Items Selection Table
How to check or change each constant of the converter is shown in the table below.
Details of each item are described in the setting items (A to R) of Chapter 8, "Parameter Settings."
○ Basic configuration (when menu configuration is BASIC)
When you select "BASIC" in the menu configuration screen, the menu to check or change each
constant is executed as follows.
Fucntion
1
2
3
4
Returns
to meas.
mode
B
Display1
Display2
DISPLAY
Returns
to meas.
mode
C
Range
type
Range1
RANGE
Returns to
meas.
mode
D
Damping
value
FILTER
Returns to
meas.
mode
E
Low cut
Value
LOW CUT
Still water Returns to
zero point meas.
adjustment mode
F
ZERO
Returns
to meas.
mode
H
DO
Digital
output 1
Digital
output 2
Returns to
meas.
mode
I
DI
Digital
input
Pulse
width
setting
mode
Returns to
meas.
mode
J
Pulse
width
Count rate
CNT/PLS
When the mode is changed from the measurement mode to the setting mode, Group B is displayed first
in the case of Basic configuration. After that, the screen changes as follows:
Group B (Start screen) ⇔Group C ⇔Group D ⇔Group E
⇔Group F ⇔Group H ⇔Group I ⇔Group J
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○ Detailed configuration
When you select "DETAILED" in the menu configuration selection screen, the check/change menu for
each constant setting is expanded as shown in the table below.
Function
1
2
3
Exciting
frequency
*3
4
5
6
7
Returns to
meas.
A
Exciting
Current *1
Meter size
*3
Flow
DETECTOR
direction *1
mode
Returns to
meas.
mode
B
Custom
Value *1
Custom
Unit *1
Display1
Display2
DUSPLAY
Returns
meas.
mode
to
C
Range type
*1
Range
Hysteresis *1
Range1 *1
Limit rate
Range2 *1
Limit time
Range3 *1
Range4 *1
RANGE
Returns
meas.
mode
to
D
Damping
value
FILTER
Returns to
meas.
mode
E
Low cut
value
Display low
cut setting
LOW CUT
Still
zero
adjustment
water
point
Returns to
meas.
mode
F
Manual zero
setting
ZERO
Current
output
setting upon Low limit
alarm
occurrence
*1
Returns to
meas.
mode
G
4-20mA
Value *1
Digital
output1
*1
Digital
output2
*1
Returns to
meas.
mode
H
DO
DO1 alarm
Status *1
DO2 alarm
Status *1
DI
control Returns to
I
DI
Digital input
*1
signal level
*1
meas.
mode
Pulse width
setting
mode
Returns
meas.
mode
to
J
Count rate
*1
Pulse width
*1
CNT/PLS
*1
Preset
output
function
*1
Preset count
value
*1
Returns to
meas.
mode
K
PRESET C
High alarm
ON/OFF
*1
High alarm
Value
*1
Low alarm
ON/OFF
*1
Low alarm
value
*1
Returns to
meas.
mode
L
H/L ALM1
HH alarm
ON/OFF
*1
HH alarm
Value
*1
LL alarm
ON/OFF
*1
LL alarm
value
*1
Returns to
meas.
mode
M
H/L ALM2
Returns to
meas.
mode
N
Self check
ON/OFF *1
SELF CHK
Returns
meas.
mode
Returns
meas.
mode
to
to
O
Fix out set
*1
Fix current
Value *1
Fix pulse
Value *1
FIX OUT
P
Password
*1
LCD
adjustment
Switch
position
OTHERS
Returns to
meas.
mode
Q
PROFIBUS
*1
COMM
0%
50%
100%
Exciting
current
display
*2
Returns to
meas.
mode
R
CAL
Flow value
calculation
*1
Flow value
calculation
*2
Flow value
calculation
*1
Note 1: If you enter a wrong password, you are allowed to check the setting value and to
perform calibration for the items with *1 mark in the table. However you are not
allowed to change the setting and perform calibration for these items.
Note 2: The items with*2, you are only allowed to check the calibration value.
Note 3: The items with*3, you are only allowed to check the setting value.
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7.5 Password input
The converter provides the password function to prohibit some functions that affect the flow measurement
from being set or adjusted. For the protected functions, see the menu configuration table on the previous
page.
* Password is a 3-digit number. If '000' is set for the password, the password input screen does not appear.
If a password is set (other than '000' is set), you have to enter your correct password.
• Limitation of totalizer operation
Start and stop operations only are permitted. (Clear operation is not permitted.)
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8. Parameter Settings
8.1 Parameter Setting Items
To check or change each constant of the converter, first select the desired setting item described in 7.3.2
“Setting and Calibration.”
Proceed as follows for settings in the setting mode.
No.
Function item
Exciting current
Meter size
Exciting frequency
Flow direction
Display1,2
Custom value
Custom unit
Display example
EXC CUR
8.2.2
8.2.3
8.2.4
8.2.5
8.2.6
8.2.7
8.2.8
SIZE
EXC FREQ
FLOW DIR
DSPL1 / DSPL2
CS VAL
CS UNIT
R TYPE,
8.2.9
Range (Span)
R1(～R4),
R HYS
8.2.10
8.2.11
8.2.12
8.2.13
Damping value
Limit rate, Limit time
Low cut value
DAMPING
LIM RATE / LIM TIME
CUT VAL
DSPL SET
Display low cut
Still water zero point
Adjustment
8.2.14
ZERO ADJ
8.2.15
8.2.16
8.2.17
Manual zero
Output at alarm occurrence
Output low limit
MANUAL
ALM 4-20
LOW LIM
DO1 FUNC, DO2 FUNC,
DO1 STAT, DO2 STAT
DI FUNC, DET LVL
8.2.18
8.2.19
Digital output
Digital input
Count rate,
Pulse width setting mode,
Pulse width
CNT RATE, PLS MODE,
PLS WID
8.2.20
8.2.21
8.2.22
Preset count value
Preset output mode
PRST VAL
OUT MODE
H SET / H VAL
L SET / L VAL
HH SET / HH VAL
LL SET / LL VAL
SELF CHK
High / Low alarm limit,
HH (High high)
LL (Low low) alarm limit
8.2.23
8.2.24
8.2.25
Self check
Fix output
FIX SET, CUR VAL,
PLS VAL
8.2.26
8.2.27
8.2.28
8.2.29
Password
PASSWORD
LCD ADJ
SW POSN
LCD adjustment
Swtich position
Communication
PROFIBUS
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8.2 Check/Change of Parameters
8.2.1 Menu Configuration Selection Screen
Display example
MENU SEL
BASIC
DETAILED
PREVIEW
ZERO ADJ
PLS SET
ESC
You can select the kind of menu configuration.
For menu items of configuration, see 7.4 "Setting and Calibration Items List."
Only the basic parameters are displayed.
BASIC
Nothing is displayed in the field of other parameters.
All parameters are displayed.
DETAILED
Only reading of all parameters is possible.
When
When
switch is pushed, the screen switches.
switch is pushed, the mode returns to the
PREVIEW
ESC
measurement mode.
Moves directly to the still water zero point adjustment
screen.
See 8.2.14 “Still Water Zero Point Adjustment.”
Moves to the pulse output setting mode.
See “Pulse output setting mode” on Page 43.
ZERO ADJ
PLS SET
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8.2.2 Exciting Current Value
The exciting current value can be checked/changed by the following procedures.
Be sure to match the exciting current value with the value specified for the
combined detector.
Specifying any other value may cause an error.
Shown below is an example of changing the exciting current value from 0.1900A to 0.2150A.
Switch operation
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
Description
Select "EX CUR" from the setting item
selection menu.
3 EXC FREQ
4 FLOW DIR
5 EXIT
ESC
EXC CUR
The currently set excitation current value
(0.1900A in this example) appears.
STEP1
0.1900
A
Then push
.
* Pushing
menu.
returns you to the setting
ESC
ESC
EXC CUR
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
(The digit indicated by the cursor is
highlighted.)
STEP2
STEP3
STEP4
STEP5
(
0.1900
A
Then push
You can continue to change the setting
value. Push to move the cursor to
.
EXC CUR
0.1900
A
the digit you want to change. (You can hold
down the switch longer for continuous
operation.)
Then push
You can continue to change the setting
value. Pushing increments the
.
EXC CUR
0.2900
A
number of the digit the cursor is positioned.
(You can hold down the switch longer for
continuous operation.)
EXC CUR
0.2150
A
Repeat this operation to change the value to
0.2150A.
When the desired value is obtained, push
to set the value temporarily.
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Switch operation
STEP6
Display example
EXC CUR
Description
shows a message to confirm
the setting is OK or not.
Pushing
0.2150
If OK, push
setting, push
. If you need to redo the
.
cancels the setting operation
O K
N O
A
Pushing
ESC
SET OK?
and exits the setting screen.
ESC
O K
N O
EXC CUR
0.2150
When you push
message, the set value is fixed.
to “SET OK?”
STEP7(=END)
O K
O K
Then pushing
brings you back to the
ESC
setting menu. If you push , you can
change the current value from 0.2150A
A
ESC
again.
Note: The setting range of excitation current value is from 0.0000A to 0.3200A.
If you try to set an exciting current value larger than 0.3200A, an error message appears
and the setting value returns to the previous value.
8.2.3 Meter Size
Proceed as follows to check the meter size of the detector.
Switch operation
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
Description
Select "SIZE" from the setting item
selection menu.
3 EXC FREQ
4 FLOW DIR
5 EXIT
ESC
SIZE
The currently set meter size (50mm in this
example) appears.
STEP1
50
Then push
.
mm
Pushing
menu.
returns you to the setting
ESC
ESC
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Note 1:The meter size display loops as shown below:
①
②
25mm
1inch
40mm
50mm
2inch
80mm
3inch
100mm
4inch
②
1.5inch
①
Note 2: When the meter size is changed, range unit and count rate will be forcefully changed as
described below. If necessary, change these parameters again.
Range unit
Count rate
m/s
If the count rate goes out of the setting range
when the meter size is changed, the count rate
will be forcefully set to zero.
Note 3: The exciting frequency setting may become inappropriate for the set value when the
meter size of the detector is changed. If the exciting frequency is the value shown
below when the meter size is changed, the exciting frequency will be forcefully
changed.
Setting meter size
Set exciting frequency
(mm)
(inch)
25
40 ~ 80
100
1
1.5 ~ 3
4
400Hz
200Hz
100Hz
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8.2.4 Exciting Frequency
Proceed as follows to check the Exciting Frequency
Switch operation
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
Description
Select "EXC FREQ" from the setting item
selection menu.
3 EXC FREQ
4 FLOW DIR
5 EXIT
ESC
EXC FREQ
The currently set excitation frequency
(200Hz in this example) appears.
STEP1
200
Then push
.
Hz
* Pushing
menu.
returns you to the setting
ESC
ESC
8.2.5 Flow Direction Setting
In the converter, you can set the flow direction of fluid arbitrarily.
Flow direction setting
Selection item
●
Contents
When the fluid flows in the direction of the arrow
indicating the flow direction that is attached to the
detector, the indicator value and electric current
output value increase.
NORMAL
When the fluid flows in the reverse direction of the
arrow indicating the flow direction that is attached to
the detector, the indicator value and electric current
output value increases.
SWITCH
Switch operation
Display example
Description
Select "FLOW DIR" from the setting item
selection menu.
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
ESC
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Switch operation
STEP1
Display example
FLOW DIR
Description
The currently set flow direction (NORMAL
in this example) appears.
NORMAL
Then push
.
* Pushing
menu.
returns you to the setting
ESC
ESC
FLOW DIR
The switches at the bottom change.
are shown.)
STEP2
(
NORMAL
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
FLOW DIR
SWITCH
You can continue to change the setting item.
STEP3
Pushing
items.
changes the selection
: Selected item is scrolled up.
: Selected item is scrolled down.
FLOW DIR
SWITCH
Perform this operation to change the setting
to SWITCH.
STEP4
When the desired item is obtained, push
to set the item temporarily.
FLOW DIR
SWITCH
Pushing
shows a message to confirm
STEP5(=END)
whether the setting is OK or not.
If OK, push
setting, push
. If you need to redo the
.
O K
N O
SET OK?
Pushing
and exits the setting screen.
cancel the setting operation
ESC
ESC
O K
N O
8.2.6 Display Setting
You can select one of the engineering units listed below as a flow measurement unit.
Flow velocity unit
m/s, ft/s
m3/s, m3/min, m3/h, m3/d , L/s, L/min, L/h, L/d,
mL/s, mL/min, mL/h, mL/d, gal/s, gal/min, gal/h, gal/d,
bbl/s, bbl/min, bbl/h, bbl/d, pt/s, pt/min, pt/h, pt/d,
qt/s, qt/min, qt/h, qt/d
Flow rate unit
(Note3)
ft3/s, ft3/min, ft3/h, ft3/d, Mgl/s, Mgl/min, Mgl/h, Mgl/d
m3 , L , mL , gal , bbl , pt , qt, ft3, Mgl
Volume unit
Other units
% , COUNT , RANGE , GRAPH , CUSTOM
Forward direction (when F or B is selected)
Reverse direction (when R or B is selected)
Totalized flow direction
Totalized difference flow
Difference between totalized forward flow and totalized
reverse flow (when totalized flow direction D is selected)
Note 1: If COUNT, RANGE, GRAPH or CUSTOM is selected, the display is shown below:
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COUNT: displays the totalized flow counts (up to 8 digits).
RANGE: displays the range number being used for measurement (1 to 4).
GPARH: displays the measured value (% value) in bar graph.
In addition, the range number being used for measurement is also displayed.
CUSTOM: displays the result obtained by multiplying m3/min by the custom coefficient.
The details see 10.10 “Custom unit function”.
Note 2: GRAPH display can be selected only for Display 2 screen.
For display settings, Display 1 (DSPL1) and Display 2 (DSPL2) can be set independently.
The following is an example to change the Display 1 setting from % to mL/s.
Switch operation
Description
Select "DSPL1" from the setting item
selection menu.
Display example
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
ESC
DSPL1
The currently set display setting (% in this
example) appears.
STEP1
%
Then push
* Pushing
menu.
.
returns you to the setting
ESC
ESC
DSPL1
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
STEP2
(
%
DSPL1
mL/s
Push
to move the cursor from the
STEP3
second unit to the third unit and change the
display unit by pushing
Repeat this operation to change the display
unit to mL/s.
.
When the desired display unit is selected,
push
to set the display unit
temporarily.
Pushing
whether the setting is OK or not.
DSPL1
mL/s
shows a message to confirm
STEP4(=END)
If OK, push
the setting, push
Pushing
. If you need to redo
O K
.
N O
cancels the setting
ESC
SET OK?
operation and exits the setting screen.
O K
Note 1: The first unit (volumetric units etc.) changes as shown below:
ESC
N O
%
m3
GRAPH
L
mL
bbl
pt
gal
RANGE
m/s
ft/s
COUNT
CUSTOM
qt
Note 2: The second unit (time unit) changes as shown below:
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/s
/min
/h
/d
For Display 2 unit setting, select DSPL2 from the setting menu.
● How to select the display digit setting
When you select flow velocity or flow rate (custom unit is included), the screen automatically
moves to the display digit setting screen.
Using the display digit setting screen, you can change the decimal places used for the
measured value in the measurement mode.
Switch operation
Description
Display example
DIGIT1
Either one of the flow velocity or flow rate
(custom unit is included) is selected, the
screen automatically moves to the display
digit setting screen.
1.0
m/s
This screen shows the set measured value
and unit.
DIGIT1
Pushing
or
changes the
STEP1
STEP2
setting of display digit and the measured
value indication changes accordingly.
1.00
m/s
When the desired item is selected, push
to set the item temporarily.
DIGIT1
Pushing
shows a message to confirm
whether the setting is OK or not.
1.00
m/s
If OK, push
setting, push
. If you need to redo the
.
O K
N O
Pushing
ESC
and exits the setting screen.
cancels the setting operation
SET OK?
O K
ESC
N O
Note: If the setting is cancelled without completing the display digit setting, the previously
used display digit setting will be used.
For display digit setting screen, the measured value is displayed in the screen based on the display
setting in the previous screen (display setting screen) and thus select the display digit setting while
observing the displayed measured value.
You can change the display digit with 1/10, 1/100, 1/1000 three phases for the setting range's maximum
effective digits. When setting range is more than 1000, a lower digit is not displayed from the decimal
point.
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For example, if the setting range is 10m/s and display digit setting is 1/100, the measured value will
be displayed to the first decimal place.
Setting range＝１０．００００ ｍ／ｓ
One hundredth of
Maximum effective digits
maximum effective digits
Likewise, when the setting range 1m/s and display digit setting is 1/100, the measured value will be
displayed to the second decimal place.
The numbers less than the displayed digits will be rounded.
Note: The maximum display digits for flow velocity, flow rate and custom value are 7 digits.
If the measured value exceeds 7 digits, the displayed value remains fixed at the maximum display
value.
● Changing the totalized flow volume direction
You can change the totalized flow volume direction as described below.
The following is an example to change the Display 1 setting from Fixed forward totalized flow (F)
to Bidirectional flow (B).
Switch operation
Description
Display example
DSPL1
Select "DSPL1" from the setting item
selection menu.
m3
F
The currently set display setting (m3 F in
this example) appears.
Then push
.
ESC
DSPL1
The switches at the bottom change.
are shown.)
STEP1
(
m3
F
B
B
At the same time, the cursor appears.
DSPL1
m3
Push
to move the cursor to the
STEP2
third unit (totalized flow direction) and then
push
to change the direction.
to set the display unit
Then push
temporarily.
DSPL1
m3
Pushing
shows a message to confirm
STEP3(=END)
whether the setting is OK or not.
If OK, push
setting, push
. If you need to redo the
.
O K
N O
Pushing
cancel the setting operation
ESC
and exits the setting screen.
SET OK?
O K
ESC
N O
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Note: The setting item for the third unit (flow volume direction code) changes
cyclically as shown below.
B(bi-directional)
F(forward direction fixed)
D(difference flow rate)
R(reverse direction fixed)
For Display 2 setting, select DSPL2 from the setting menu.
8.2.7 Custom Coefficient Setting
You can set the custom coefficient used when CUSTOM is selected for display setting or span setting.
Custom coefficient can be set except 0.
Displayed value when CUSTOM is set ＝ Measured value in m3/min unit × Custom coefficient
Span value when CUSTOM is set
＝ Span value in m3/min unit × Custom coefficient
Note: Custom coefficient is applied when CUSTOM is selected in the display setting or span setting.
Other values such as instantaneous flow rate (display unit, such as m/s and m3/min), displayed
values such as totalized flow and pulse out will not be applied. The details see 10.10 “Custom
unit function”.
The following is an example to change the custom coefficient from 1.00 to 2.25.
Switch operation
Description
Select "CS VAL" from the setting item
selection menu.
Display example
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
ESC
CS VAL
The currently set custom coefficient
(1.00000 in this example) appears.
STEP1
STEP2
STEP3
1.00000
Then push
.
* Pushing
menu.
returns you to the setting
ESC
ESC
CS VAL
The switches at the bottom change.
are shown.)
(
1.00000
At the same time, the cursor appears.
CS VAL
Push
to move the cursor to the
desired digit and push
number of the digit.
to change the
2.25000
Repeat this operation to change the value to
2.25.
When the value is changed to the desired
value, push
to set the custom
coefficient temporarily.
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Switch operation
Description
shows a message to confirm
whether the setting is OK or not.
Display example
CS VAL
Pushing
STEP4(=END)
2.25000
If OK, push
setting, push
. If you need to redo the
.
O K
N O
SET OK?
Pushing
and exits the setting screen.
cancels the setting operation
ESC
O K
ESC
N O
Note: The custom coefficient setting precision is 5 digits. Therefore, the input value changes
as follows depending on the setting value:
(Example) Input value, "85713038" → After the setting is confirmed, "85713040"
8.2.8 Custom Unit Setting
You can set the custom unit used when CUSTOM is selected for display setting.
For custom unit setting, you can set any combination of characters within 7 characters.
The following is an example to change the custom unit from AAA/BBB to XXX/ZZZ.
Switch operation
Description
Select "CS UNIT" from the setting item
selection menu.
Display example
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
ESC
CS UNIT
The currently set custom unit (AAA/BBB in
this example) appears.
STEP1
STEP2
STEP3
AAA/BBB
Then push
.
* Pushing
menu.
returns you to the setting
ESC
ESC
CS UNIT
The switches at the bottom change.
are shown.)
(
AAA/BBB
At the same time, the cursor appears.
CS UNIT
XAA/BBB
Push
or
to change the
character.
When the desired character is obtained,
push
. The cursor moves to the next
character.
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Switch operation
Description
when the cursor is positioned
on the 7th character shows a message to
Display example
CS UNIT
Pushing
STEP4(=END)
XXX/ZZZ
confirm whether the setting is OK or not.
If OK, push
. If you want to redo the
.
O K
N O
setting, push
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
O K
ESC
N O
Note : The selectable characters are displayed cyclically as shown below:
Symbol 1
！
↓
” ＃ ＄ ％ ＆ ’ （ ） ＊ ＋ ， － ． ／
Numeric
characters
０～９
↓
： ； ＜ ＝ ＞ ？ ・
↓
Symbol 1
Alphabetical
characters
(uppercase)
Ａ～Ｚ
↓
Alphabetical
characters
(lowercase)
ａ～ｚ
↓
Special
character
“
”（Space）
8.2.9 Span (Range)
You can set the following constants in this setting item:
(1) Range type
(2) Unit of span (can be changed in Range 1)
(3) Span
(4) Hysteresis
● Range type
Multiple ranges can be used by selecting the range type. You can select a single range,
multiple ranges, or forward/reverse multiple ranges.
Select one from five types shown below:
Selection items (display) Description
SINGLE
4F-0R
Single range
Unidirectional flow,
automatic selection of multiple ranges
Bidirectional flows,
automatic selection of multiple ranges
Unidirectional flow,
multiple ranges selected by external signal
Bidirectional flows,
2F-2R
EXT 2F-0R
EXT 2F-2R
multiple ranges selected by external signal
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● Span
You can set the span for actual flow rate or flow velocity.
(1) Setting range
The span can be set within 0.5 m/s to 10 m/s in terms of flow velocity.
If you try to set the span outside of this range, either high limit or low limit error message
appears:
HIGH OVER SPEC (if the set value exceeds 10 m/s)
LOW OVER SPEC (if the set value is less than 0.1 m/s)
Try again to set the span within the range.
(2) Limitation of multiple ranges
When multiple ranges are used, the following must be observed:
In the case of unidirectional flow,
Range 1 > Range 2 > Range 3 > Range 4
In the case of bidirectional flows,
Range 1 > Range 2,
Range 3 > Range 4
If you try to set the ranges not conforming to the above, the following message
appears:
MULTI RANGE ERROR
Try again to set the ranges as specified above.
(3) Influence on count rate (pulse rate)
If you have changed the range when count rate (pulse rate) is set, the pulse output for 100%
output may exceed the maximum allowable range.
If this happens, the following message appears after all ranges are set and the screen goes to
the count rate (pulse rate) setting sequence.
HIGH OVER CNT RATE or LOW OVER CNT RATE
In this case, set the count rate (pulse rate) again in accordance with 8.2.20 “Count Rate,
Pulse Width Setting Mode and Pulse Width.”
● Unit of span
The span setting is performed for Range 1.
The same unit as that of Range 1 applies automatically to Ranges 2 to 4 and thus its setting is
not needed.
You can select the setting unit from the units below:
Flow velocity unit
m/s, ft/s
m3/s, m3/min, m3/h, m3/d, L/s, L/min, L/h, L/d
mL/s, mL/min, mL/h, mL/d, gal/s, gal/min, gal/h, gal/d
bbl/s, bbl/min, bbl/h, bbl/d, pt/s, pt/min, pt/h, pt/d
qt/s, qt/min, qt/h, qt/d
Flow rate unit
(Note)
ft3/s, ft3/min, ft3/h, ft3/d, Mgl/s, Mgl/min, Mgl/h, Mgl/d
Custom unit
Other (Note)
If you have changed the unit, the new span value will be displayed automatically based on the
newly set unit. When custom unit is selected, the new span value will be displayed
automatically based on the custom coefficient and custom unit of 8.2.7 “Custom Coefficient
Setting” and 8.2.8 “Custom Unit Setting”. The details see 10.10 “Custom unit function”.
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● Range hysteresis
The hysteresis is the dead band used when multiple ranges are switched.
You can set the hysteresis within the range of 0 to 25% in increments of 0.1%.
The hysteresis is set only when automatic selection of multiple ranges is used.
● Setting sequence of span (range)
The following is the setting sequence for span (range).
Item selection for span (range) setting
R TYPE
R1
:Range type setting
:Range 1 span and unit setting
R2
R3
R4
: Range 2 span
: Range 3 span
: Range 4 span
R HYS
: Hysteresis setting
Note: If any type of multiple ranges is selected as range type, the setting screens of Range 1
to Hysteresis forcefully appears one after another. If the setting is cancelled halfway, all
of the settings including the ones already set will be cancelled.
You can check or change each constant as described below.
● Checking each constant
Switch operation
Description
Select "R1" from the setting item selection
menu.
Display example
C:RANGE
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
7 EXIT
ESC
R1
The currently set span value of Range 1
appears.
5.00000
m/s
ESC
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Switch operation
Description
returns you to the setting
Display example
C:RANGE
Pushing
menu.
ESC
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
ESC
7 EXIT
ESC
● Changing the range type
The range type should be set before changing the span.
The following is an example to change the range type from Single range (SINGLE) to
Bidirectional automatic selection of multiple ranges (2F-2R).
Switch operation
Description
Select "R TYPE" from the setting item
selection menu.
Display example
C:RANGE
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
7 EXIT
ESC
R TYPE
The currently set range type (SINGLE in
this example) appears.
STEP1
SINGLE
Then push
.
* Pushing
menu.
returns you to the setting
ESC
ESC
R TYPE
The switches at the bottom change.
are shown.)
At the same, the cursor appears.
(The item indicated by the cursor is
highlighted.)
STEP2
STEP3
STEP4
(
4F-0R
Then push
.
R TYPE
2F-2R
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
R TYPE
2F-2R
Perform this operation to change the setting
to 2F-2R.
When the item is changed to the desired
item, push
temporarily.
to set the item
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Switch operation
Description
, a message appears
to confirm whether the setting is OK or not.
Display example
R TYPE
When you push
STEP5(=END)
2F-2R
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
and exits the setting screen.
cancels the setting operation
ESC
ESC
N O
O K
● Changing the span
You can set the span value for each range.
The following is an example to change the span of Range 1 from 2.0 m/s to 100 L/min.
Switch operation
STEP1
Description
Select "R1" from the setting item selection
menu.
Display example
R1
2.00000
m/s
The currently set span value of Range1
(2.00000 m/s in this example) appears.
Then push
.
ESC
R1
R1
R1
R2
The switches at the bottom change.
are shown.)
STEP2
STEP3
STEP4
STEP5
(
2.00000
m/s
At the same time, the cursor appears.
Push
to move the cursor to the digit
of the first unit.
2.00000
m/s
Push
Push
to change the first unit.
to move the cursor to the
3.93000
L/s
digit of the time unit.
Push
Push
to change the time unit.
to move the cursor to the digit
236.000
L/min
of span value.
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Switch operation
STEP6
Description
to change the number of the
Display example
R2
R2
Push
digit.
Push
136.000
L/min
to move the digit.
When you push
, a message appears
to confirm whether the setting is OK or not.
STEP7(=END)
100.000
L/min
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
ESC
and exits the setting screen.
cancels the setting operation
O K
ESC
N O
Note: Unites of the measuring unit changes as shown below:
First unit
m3
L
mL
bbl
gal
m
/d
CUSTOM
qt
pt
ft
Second unit
(Time unit)
/s
/min
/h
・However, the following first and second unit combinations cannot be selected:
m/min, m/h, m/d, ft/min, ft/h, ft/d
・In the case of custom unit, time unit is not displayed.
・In the case of custom unit, character string set in 8.2.8 “Custom Unit Setting” is displayed.
Identification character “*” showing the custom unit is displayed at the head of custom unit.
● Changing the hysteresis
The hysteresis used for multi-range switching is set to 3% (with respect to Range 1) when the
flowmeter is shipped from the factory, unless otherwise specified.
The following is an example to change the hysteresis from 3% to 5%.
Switch operation
STEP1
Description
Select "R HYS" from the setting item
selection menu.
Display example
R HYS
03.0
%
The currently set hysteresis (3.0% in this
example) appears.
Then push
.
ESC
R HYS
The switches at the bottom change.
are shown.)
STEP2
(
03.0
%
At the same time, the cursor appears.
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Switch operation
STEP3
Description
to move the cursor to the
Display example
R HYS
Push
desired digit and push
number of the digit.
to change the
05.0
%
R HYS
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
05.0
%
If OK, push O K . If you want to redo the
setting, push
.
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
O K
ESC
N O
Note: If you try to set a value exceeding 25.0%, HIGH OVER SPEC error appears and the
value returns to the previous value. Set a value once again.
8.2.10 Damping Constant
The damping constant is used to moderate output fluctuations. (The larger the damping constant, the more
the output is averaged. But the response to an input change will be slower.) The damping constant can be
set as follows:
The damping constant is set for 0.0 sec, 0.5 sec and 1 to 200 sec (in increments of 1 second)
Note: 0.0 sec setting will work as equal to 0.1 sec damping constant.
Set 1 sec or more for normal operation.
If you set a value exceeding 200s, it is forcibly changed to 200s before data is written.
Proceed as follows to check or change the damping constant.
Shown below is an example of changing the damping constant from 5.0s to 10s.
Switch operation
Description
Select "DAMPING" from the setting item
selection menu.
Display example
D:FILTER
1 DAMPING
2 LIM RATE
3 LIM TIME
4 EXIT
ESC
DAMPING
The currently set damping constant (5.0s in
this example) appears.
STEP1
05.0
S
Then push
.
ESC
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Switch operation
STEP2
Description
The switches at the bottom change.
are shown.)
Display example
DAMPING
(
05.0
S
At the same time, the cursor appears.
DAMPING
Push
to move the cursor to the
STEP3
desired digit and push
number of the digit.
to change the
10.0
S
DAMPING
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
10.0
If OK, push
setting, push
. If you want to redo the
.
O K
N O
S
SET OK?
Pushing
and exits the setting screen.
cancels the setting operation
ESC
O K
ESC
N O
8.2.11 Rate-Of-Change Limit and Control Limit Time
The rate-of-change limit is used to control sudden changes of the converter’s flow rate signal output
when excessive noise is contained in the flow rate signal.
The rate-of-change limit (set in percent value to the span of measuring range) and control limit time (set
in second) are used, and if the flow rate signal sampling value exceeds the rate-of-change limit value
based on the previous average value of the flow rate signal, the converter rejects the sampling value and
outputs the average value including the maximum value of the rate-of-change value.
In addition, if the limit-exceeding flow rate sampling value continues for the same flow direction for
more than the preset control limit time, the data will be considered as flow rate variation and that
sampling value will be used as normal output data.
You can set these two parameters within the ranges shown below:
• Rate-of-change limit
• Control limit time:
0 to 30% / 50ms (in increments of 0.1%)
0 to 20s (in increments of 1s)
Note：If “0” is set in either of these parameters, the rate-of-change limit function is disabled.
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● Changing the rate-of-change limit
The following is an example to change the rate-of-change limit value from 10.0% to 15.0%.
Switch operation
Description
Select "LIM RATE" from the setting item
selection menu.
Display example
D:FILTER
1 DAMPING
2 LIM RATE
3 LIM TIME
4 EXIT
ESC
LIM RATE
The currently set value (10.0% in this
example) appears.
STEP1
10.0
%
Then push
.
ESC
LIM RATE
The switches at the bottom change.
are shown.)
STEP2
(
10.0
%
At the same time, the cursor appears.
LIM RATE
Push
to move the cursor to the
STEP3
desired digit and push
number of the digit.
to change the
15.0
%
LIM RATE
15.0
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
%
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
O K
ESC
N O
Note : If you try to set a value exceeding 30.0%, HIGH OVER SPEC error appears and the
value returns to the previous value. Set a value again.
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8.2.12 Low Cutoff
The low cutoff is the function to set the current output to zero forcefully if the flow rate is equal to or
less than the low cutoff value set near 0%.
The low cutoff value can be set within the range 0 to 10% in increments of 0.1%.
You can check or change the low cutoff value as described below.
The following is an example to change the low cutoff value from 1.0% to 3.0%.
Switch operation
Description
Select "CUT VAL" from the setting item
selection menu.
Display example
E:LOW CUT
1 CUT VAL
2 DSPL SET
3 EXIT
ESC
CUT VAL
The currently set low cutoff value (01.0%
in this example) appears.
STEP1
01.0
%
Then push
.
ESC
CUT VAL
The switches at the bottom change.
are shown.)
STEP2
(
01.0
%
At the same time, the cursor appears.
CUT VAL
03.0
%
Push
to move the cursor to the
STEP3
desired digit and push
number of the digit.
to change the
CUT VAL
03.0
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
%
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
O K
ESC
N O
Note: If you try to set a value exceeding 10.0%, HIGH OVER SPEC error appears and the
value returns to the previous value. Set a value again.
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8.2.13 Display Low Cutoff
When low cutoff is set in 8.2.12 “Low Cutoff,” this function determines whether to use the low cutoff
processing for displayed values.
You can select the display low cutoff setting from the items in the table below.
● Display low cutoff setting function
Selection items
Displayed values
Low cutoff processing is not used for displayed
values.
LINEAR
LOW CUT
Displayed values are processed with low cutoff.
For example, if the low cutoff is set to 10% and the indicated value of the input from the detector is
5%, the displayed value on the screen becomes as shown below.
Display low cutoff
LINEAR
Displayed value
5.0%
0.0%
LOW CUT
You can check or change the display low cutoff as described below.
The following is an example to change the setting from LINEAR to LOW CUT.
Switch operation
Description
Select "DSPL SET" from the setting item
selection menu.
Display example
E:LOW CUT
1 CUT VAL
2 DSPL SET
3 EXIT
ESC
DSPL SET
The currently set low cutoff setting
(LINEAR in this example) appears.
STEP1
LINEAR
Then push
.
Pushing
menu.
returns you to the setting
ESC
ESC
DSPL SET
The switches at the bottom change.
are shown.)
STEP2
STEP3
(
LINEAR
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
DSPL SET
LOW CUT
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
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Switch operation
Description
, a message appears
to confirm whether the setting is OK or not.
Display example
DSPL SET
When you push
STEP4(=END)
LOW CUT
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
and exits the setting screen.
cancels the setting operation
ESC
ESC
N O
O K
Note: The measured value sent from the converter through communications is the value
processed with display low cutoff.
8.2.14 Still Water Zero Adjustment
Zero adjustment is performed with the fluid held still in the detector's measurement pipe.
Switch operation
Description
Display example
F:ZERO
Select "ZERO ADJ" from the
configuration item selection menu.
1 ZERO ADJ
2 MANUAL
3 EXIT
ESC
ZERO ADJ
The current flow rate measurement value
appears.
STEP1
1.2
%
Then push and hold
longer.
* Pushing
menu.
returns you to the setting
ESC
ESC
ADJ READY
The title display changes to ADJ READY,
and the converter is ready for zero
adjustment.
STEP2
1.2
%
* Pushing
screen.
returns you to the previous
N O
Longer
STEP3
N O
O K
NOW ZERO
ADJUSTING
Pushing
starts zero adjustment.
O K
O K
ZERO ADJ
Zero adjustment ends in several seconds and
the flow rate measured value appears.
STEP4(=END)
0.0
%
Pushing
menu.
returns you to the setting
ESC
ESC
Note 1: To start still water zero adjustment, push and hold
longer.
Note 2: Still water zero adjustment is possible only when the flow rate value is within the range of
±1.25 m/s.
Note 3: If you want to cancel the adjustment when ADJ READY is displayed, push
. This
N O
returns you to the state showing the flow rate measurement value on the screen.
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8.2.15 Manual Zero Adjustment
This function is used to perform zero adjustment simply by comparing the output value of the converter
with the process value of other instruments without stopping the process of measurement.
If zero adjustment described in 8.2.14, “Still Water Zero Adjustment” can be performed, this
manual setting is not needed.
● Changing the manual zero adjustment value
Calculate the adjustment value with the following equation:
Adjustment value (%) = {(Actual flow rate) − (Converter’s measured value)}
* Calculate the manual zero value using the % value for the setting range (Range 1) of the converter.
See the following example.
(Example)
Flow rate
% value to setting span
50.0 %
Actual flow rate obtained
from other instrument
Converter’s measured value
10.0 m3／min
10.5 m3／min
52.5 %
-2.5 %
Manual zero adjustment value
(If manual zero adjustment value is set to +2.5 %, the converter output is shifted by −2.5%
and the output of 50.0 % will be obtained.)
The following is an example to change the manual zero adjustment value from +1.0% to −2.5%.
Switch operation
Description
Select "MANUAL" from the setting item
selection menu.
Display example
F:ZERO
1 ZERO ADJ
2 MANUAL
3 EXIT
ESC
MANUAL
The currently set manual zero value (+1.0%
in this example) appears.
STEP1
+001.0
%
Then push
.
ESC
MANUAL
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
STEP2
(
+001.0
%
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Switch operation
STEP3
Description
to move the cursor to the
Display example
MANUAL
Push
desired digit and push
to change the
-002.5
%
symbol or number of the digit.
MANUAL
Pushing
shows a message to confirm
STEP4(=END)
whether the setting is OK or not.
-002.5
If OK, push
setting, push
. If you need to redo the
.
O K
N O
%
SET OK?
Pushing
and exits the setting screen.
cancels the setting operation
ESC
O K
ESC
N O
Note: The manual zero adjustment value can be set within the range equivalent to ±1 m/s
(±10 % of the maximum range 10m/s). If you try to set a value out of this range, an
error message HIGH OVER SPEC or LOW OVER SPEC appears. If this happen,
redo the setting.
In addition, if you perform still water zero adjustment with water held still, the manual
zero adjustment value will be cleared to 0.0%.
8.2.16 4−20mA Alarm Output Setting
The 4−20mA alarm output setting is the function to fix the current output to a selected fixed value if
an alarm occurs when self-diagnosis function is performed.
The 4−20mA alarm output value can be selected from the following table.
● The 4−20mA alarm output setting function
Selection items
UNDER 3mA
4mA
The 4−20mA alarm output value
3.0mA or less
4.0mA
HOLD
Fixed to the present value
24.0mA or more
OVER 24mA
You can check or change the 4−20mA alarm output value as described below.
The following is an example to change the setting from UNDER 3.0mA to 4.0mA.
Switch operation
Description
Select "ALM 4-20" from the setting item
selection menu.
Display example
G:4-20mA
1 ALM 4-20
2 LOW LIM
3 EXIT
ESC
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Switch operation
STEP1
Description
Display example
ALM 4-20
The currently set value (UNDER 3.0mA in
this example) appears.
UNDER 3mA
Then push
.
ESC
* Pushing
menu.
returns you to the setting
ESC
ALM 4-20
The switches at the bottom change.
are shown.)
STEP2
(
UNDER 3mA
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
ALM 4-20
4mA
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
ALM 4-20
4mA
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
O K
N O
8.2.17 Output Low Limit Setting
The low limit of the current output for converter can be set.
The output low limit can be selected from the items listed in the table below.
● Output low limit setting function
Selection items
4.0mA
Output low limit
The current value can be outputted up to 4.0mA (0%).
The current value can be outputted up to 3.2mA (−5%).
The current value can be outputted up to 2.4mA (−10%).
3.2mA
2.4mA
Note: If the low cutoff value in 8.2.12 “Low Cutoff” is set to a value other than 0%, the output low
limit value will be fixed to 4.0mA, regardless of the set value.
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You can check or change the output low limit as described below.
The following is an example to change the output low limit value from 4.0mA to 2.4mA.
Switch operation
Description
Select "LOW LIM" from the setting item
selection menu.
Display example
G:4-20mA
1 ALM 4-20
2 LOW LIM
3 EXIT
ESC
LOW LIM
The currently set value (4.0mA in this
example) appears.
STEP1
4.0mA
Then push
.
*Pushing
menu.
returns you to the setting
ESC
ESC
LOW LIM
The switches at the bottom change.
are shown.)
STEP2
(
4.0mA
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
LOW LIM
2.4mA
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
LOW LIM
2.4mA
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
O K
N O
8.2.18 Digital Output
Digital output functions can be selected.
You can select the digital output function from the tables shown below.
For details of digital output functions, see 10, “Functional Description.”
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●Digital output functions
Selection items
NO USE
Digital output functions
Not used
H ALM
High alarm output
L ALM
Low alarm output
HH ALM
High-High alarm output
Low-Low alarm output
Range output No. 1
Range output No. 2
Preset count output
Converter failure alarm output
Pulse output
LL ALM
RNG SIG1
RNG SIG2
PRESET C
CONV ALM
PLS OUT
PLS FRD
PLS REV
MRH ALM
MRL ALM
Fixed forward flow pulse output
Fixed reverse flow pulse output
Multi-range high alarm output (option)
Multi-range low alarm output (option)
Notes: When the range type is set to Forward/reverse multiple ranges, and if the pulse output
(PLS OUT) is selected, pulses of forward and reverse directions will be output.
For setting method of the range type, see 8.2.9, “Span (Range).”
●Digital output active status (Only when alarm output is set )
Selection items
NormCLOSE
NormOPEN
Alarm output action
Normal: Contact closed, Alarm out: Contact open
Normal: Contact open, Alarm out: Contact closed
●Changing the digital output function
The following is an example to change the Digital Output 1 (DO1) function from High alarm
output (H ALM) to Low alarm output (L ALM).
Switch operation
Description
Select "DO1 FUNC" from the setting item
selection menu.
Display example
H:DO
1 DO1 FUNC
2 DO2 FUNC
3 DO1 STAT
4 DO2 STAT
5 EXIT
ESC
DO1 FUNC
The current setting (H ALM in this example)
appears.
STEP1
H ALM
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
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Switch operation
STEP2
Description
The switches at the bottom change.
are shown.)
Display example
DO1 FUNC
(
H ALM
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
DO1 FUNC
L ALM
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
DO1 FUNC
L ALM
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
O K
N O
8.2.19 Digital Input
Digital input functions can be selected.
You can select the digital input function from the table shown below.
For details of digital input functions, see 10, “Functional Description.”
●Digital input functions
Selection items
NO USE
Digital input functions
Not used
CNT ST/SP
CNT RS/ST
RNG SW
Totalizer Start / Stop
Totalizer Reset / Start
Remote selection switch of multiple ranges
Still water zero adjustment start
Fixed output mode control
ZERO ADJ
FIX OUT
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●Digital input control signal
You can select the detective level of the digital input, as shown below, to control the totalizer
and pulse output.
(Only when the digital input function is set for totalizer control input)
Selection items
Digital input function setting
Totalizer control signal
CNT ST/SP
H signal：Totalizer STOP
（Totalizer START/STOP）
L signal：Totalizer START
L LEVEL
CNT RS/ST
H signal：Totalizer START
（Totalizer RESET/START）
L signal：Totalizer RESET
CNT ST/SP
H signal：Totalizer START
（Totalizer START/STOP）
L signal：Totalizer STOP
H LEVEL
CNT RS/ST
H signal：Totalizer RESET
（Totalizer RESET/START）
L signal：Totalizer START
●Changing the digital input function
The following is an example to change the Digital Input (DI) function from No use (NO
USE) to Totalizer Start / Stop (CNT ST/SP).
Switch operation
Description
Select "DI FUNC" from the setting item
selection menu.
Display example
I:DI
1 DI FUNC
2 DET LVL
3 EXIT
ESC
DI FUNC
The current setting (NO USE in this
example) appears.
STEP1
NO USE
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
DI FUNC
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
STEP2
STEP3
(
NO USE
Then push
.
DI FUNC
You can continue to change the setting item.
Push
to change the selection
CNT ST/SP
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
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Switch operation
Description
, a message appears
to confirm whether the setting is OK or not.
Display example
DI FUNC
When you push
STEP4(=END)
CNT ST/SP
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
O K
N O
8.2.20 Count Rate (Pulse Rate), Pulse Width Setting Mode and Pulse Width
In this section, the volume per count (pulse) for totalized flow operation and the pulse width for
totalization pulse output can be set.
The totalized flow counts is not affected by the display setting but it is recommended that you set a
volume unit for Display 1 or Display 2 to check its operation.
●The count rate must be set so that the pulse output at 100% output is within the range below:
3.6 to 10800000 pulse/h (0.001 to 3000 pulse/s).
If you try to set a value outside of this range, an error message HIGH OVER SPEC or LOW
OVER SPEC appears and the value returns to the previous value.
Note: Count rate setting range
Example: In the case the range is 108m3/h (0.03m3/s),
Minimum value (for 10800000 pulse/h):
108(m3/h) / 10800000(pulse/h) = 0.00001m3 = 0.01L (liter).
Maximum value (for 3.6 pulse/h):
108(m3/h) / 3.6(pulse/h) = 30m3.
● The pulse width must be set to a value within the range of 0.3ms to 500ms.
If you try to set a value exceeding 500 ms, the value will be forcibly changed to 500ms.
● The pulse width must be set to 40% or less of the period of pulse frequency at 100% output.
If you try to set a value exceeding the limit, regardless of the setting above, an error message HIGH
OVER SPEC appears and the value returns to the previous value.
If the pulse width is set to 0, it will be automatically set to 40% of the period of pulse frequency at
100% output. In this case, the pulse width setting mode remains in the Manual mode. If the calculation
result exceeds 100ms, it will be forcibly set to 100ms.
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● For pulse width setting mode, you can select either AUTO or MANUAL.
Depending on this setting, the pulse width setting varies as shown in the table below:
Selection item
Pulse width value to be set
After the count rate is set, the pulse width is automatically set
to 40% of the period of pulse frequency at 100% output.
Even after the count rate is set, the pulse width is not changed.
* However, if the pulse width becomes out of the setting
range as a result of count rate setting, the screen is
automatically switched to the pulse width setting screen
after the count rate is set.
AUTO
MANUAL
Note: If the count rate exceeds 1000 (pulse/s), the pulse width setting mode is limited to the AUTO
mode only and you cannot set the width manually.
● Examples of pulse width setting range
Example 1
In the case the range is 108m3/h (0.03m3/s) and the count rate is 0.00003m3:
Since the pulse rate is 108 (m3/h) / 0.00003(m3) = 3600000 pulse/h (1000 pulse/s), the period
of pulse frequency at full scale is 1ms.
Therefore, the pulse width can be set only to: 1ms × 40% = 0.4ms only.
Example 2
In the case the range is 108m3/h (0.03m3/s) and the count rate is 30m3:
Since the pulse rate is 108(m3/h) / 30(m3) = 3.6 pulse/h (0.001 pulse/s), the
period of pulse frequency at full scale is 1000000ms.
Therefore, the pulse width is: 1000000ms × 40% = 400000ms. However, since the
maximum value is 500ms, the pulse width becomes 500ms.
Example 3
In the case the range is 108m3/h (0.03m3/s), the count rate is 0.03m3 and the pulse width is set
to 0ms:
Since the pulse rate is 108(m3/h) × 0.03(m3) = 3600 pulse/h (1 pulse/s), the period
of pulse frequency at full scale is 1000ms.
Therefore, the pulse width is: 1000ms × 40% = 400ms. However, since the
maximum value is 100ms in the case of Auto setting, the pulse width
becomes 100ms.
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You can check or change the count rate and pulse width as described below.
The following is an example to change the count rate from 0.01m3 to 0.9 L.
Switch operation
STEP1
Description
Display example
The currently set count rate (0.01m3 in this
CNT RATE
0.01000
m3
example) appears.
Then push
.
ESC
CNT RATE
0.01000
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
STEP2
(
m3
CNT RATE
10.0000
L
Push
to move the cursor to the digit
STEP3
of the unit and push
to change from
“m3” to “L”.
CNT RATE
0.90000
L
Push
to move the cursor to the digit
STEP4
you want to change and push
change the number of the digit.
to
CNT RATE
0.90000
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
L
SET OK?
ESC
Pushing
cancels the setting operation
and exits the setting screen.
O K
ESC
N O
To set the pulse width setting mode or pulse width, select the relevant item below from the setting
menu.
Pulse width setting mode
Pulse width
PLS MODE
PLS WID
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Note 1: The units of count rate change cyclically as shown below:
m³ mL bbl gal pt qt
L
Note 2: After the count rate is set, related parameters are automatically set under the following
conditions:
(1) Pulse width
When the pulse width setting mode is AUTO:
Pulse width will be automatically set according to the count rate.
When the pulse width setting mode is MANUAL:
After the count rate is set, if the pulse width is out of the setting
range, the screen changes automatically to the pulse width setting
screen.
(2) Digital Output 1 (DO1)
When the count rate is set from zero to other than zero:
If the digital output setting is NO USE,
Pulse output (PLS OUT) will be automatically set to Digital Output 1 (DO1)
setting.
Note 3: Relationship between the count rate and totalizer operations
Count rate is set to zero while totalizer is in operation.
↓
Totalizer will be forced to stop.
↓
Count rate is set to other than zero.
↓
Totalizer starts counting again.
* If the count rate is changed from a value other than zero to other value, the operation of
totalizer does not change.
Note 4: If the pulse width setting mode is set to MANUAL, the screen automatically changes to the
pulse width setting screen.
8.2.21 Preset Count
You can set the preset count for the preset counter.
Preset count can be set within the range of 0 to 99999999.
Preset counter will not be affected by the display setting but it is recommended that one of the volume
units be set as the display unit so that the operating condition of the counter can be checked.
* Preset mode can be selected. For details, see 8.2.22, “Preset Mode.”
Note: Preset counter works only for foreword flow counts.
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You can check or change the preset count as described below.
The following is an example to change the preset count value from 500 (count) to 1000 (count).
Switch operation
Description
Select "PRST VAL" from the setting item
selection menu.
Display example
K:PRESET C
1 PRST VAL
2 OUT MODE
3 EXIT
ESC
PRST VAL
The currently set value (500 in this
example) appears.
STEP1
00000500
Then push
.
ESC
PRST VAL
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
STEP2
(
00000500
PRST VAL
00001000
Push
to move the cursor to the
STEP3
digit you want to change and push
to change the number of the digit.
PRST VAL
00001000
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
ESC
Pushing
cancels the setting operation
and exits the setting screen.
O K
ESC
N O
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8.2.22 Preset Mode
The preset mode determines the function when the totalizer reaches the preset count.
The present mode can be set from the items shown below.
●Preset mode
Selection items
HOLD
Preset mode
Holds the output value.
50ms PLS
500ms PLS
Outputs a one shot pulse of 50ms width.
Outputs a one shot pulse of 500ms width.
Note: If you set the preset mode to "50ms PLS" or "500ms PLS", you need to set the preset
count to 1, 2, 5, 25, 125 ×10n. (If you set a value that does not meet this condition, the
preset output timing may be shifted when the totalizer overflows.
You can check or change the preset mode as described below.
The following is an example to change the present mode from Output condition hold (HOLD)
to One-shot pulse output with pulse width of 50ms (50ms PLS).
Switch operation
Description
Select "OUT MODE" from the setting item
selection menu.
Display example
K:PRESET C
1 PRST VAL
2 OUT MODE
3 EXIT
ESC
OUT MODE
The current setting (HOLD in this example)
appears.
STEP1
HOLD
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
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Switch operation
STEP2
Description
The switches at the bottom change.
are shown.)
Display example
OUT MODE
(
HOLD
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
OUT MODE
50ms PLS
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
OUT MODE
50ms PLS
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
O K
N O
8.2.23 Flow Rate High/Low Alarm and High-High/Low-Low Alarm
The high/low limit, high-high/low-low limit of the flow rate, at which an alarm is generated, can be set
as % value of the span flow rate of the set maximum range.
The high/low alarm, and high-high/low-low alarm values for flow rate can be set within the range of
−10% to 110% (percentage to Range 1) in increments of 0.1%.
●Changing the high/low alarm on/off setting
The following is an example to change the high alarm setting from OFF to ON.
Switch operation
Description
Select "H SET" from the setting item
selection menu.
Display example
L:H/L ALM1
1 H SET
2 H VAL
3 L SET
4 L VAL
5 EXIT
ESC
H SET
The current setting (OFF in this example)
appears.
STEP1
OFF
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
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Switch operation
STEP2
Description
The switches at the bottom change.
are shown.)
Display example
H SET
(
OFF
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
H SET
ON
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
H SET
ON
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
N O
O K
●Changing the high/low alarm value
The following is an example to change the high alarm value from +105% to +103%.
Switch operation
Description
Select "H VAL" from the setting item
selection menu.
Display example
L:H/L ALM1
1 H SET
2 H VAL
3 L SET
4 L VAL
5 EXIT
ESC
H VAL
The currently set value (+105% in this
example) appears.
STEP1
STEP2
+105.0
%
Then push
.
ESC
H VAL
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
(
+105.0
%
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Switch operation
STEP3
Description
to move the cursor to the
digit you want to change and push
to change the number of the digit.
Display example
H VAL
Push
+103.0
%
H VAL
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
+103.0
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
ESC
Pushing
cancels the setting operation
and exits the setting screen.
O K
ESC
N O
Note: If you try to set a value outside of the range −10% to +110%, LOW OVER SPEC or
HIGH OVER SPEC error appears and the value returns to the previous value. Set a
value once again.
8.2.24 Mag-Prover -Self Diagnosis ON/OFF Setting
You can select on/off setting for Mag-Prover’s self-diagnosis function.
If the self-diagnosis function is set to OFF, no error message is displayed even if any of the errors listed
below occurs.
• ROM error
• RAM error
• System parameter error
• Excitation cable is not connected or its wiring is open
• Excitation circuit failure
• ADC circuit error
• Totalizer data is destroyed
Selection items
OFF
ON
Description
Self-diagnosis function is turned off.
Self-diagnosis function is turned on.
If this function is set to ON and an error occurs, an error message appears on the Display 2 measured
value screen. If an error occurs, the measurement items specified for Display 2 screen cannot be
displayed unless the error is removed.
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●Changing the Mag-Prover’s self-diagnosis function setting
The following is an example to change the Mag-Prover’s self-diagnosis setting from OFF to ON.
Switch operation
Description
Select "SELF CHK" from the setting item
selection menu.
Display example
N:SELF CHK
1 EMPTY
2 SELF CHK
3 CONV ALM
4 EXIT
ESC
SELF CHK
The current setting (OFF in this example)
appears.
STEP1
OFF
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
SELF CHK
The switches at the bottom change.
are shown.)
STEP2
(
OFF
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
SELF CHK
ON
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
SELF CHK
ON
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
N O
O K
8.2.25 Fixed Value Output
The fixed value output function is used to output a fixed current and/or a fixed pulse output
independently of the flow rate signal. (The fixed pulse output is available only when Digital Output 1
(DO1) or Digital Output 2 (DO2) is used for pulse output function. For DO2, output can be obtained
only when fixed pulse output is 100pps or less.
The fixed-value output can be set in the ranges described below. (Current output and pulse output can
be set and output at the same time.)
• Fixed current output:
• Fixed pulse output:
2.4 to 24 mA (can be set in increments of 0.1 mA)
0 to 3000 pps (can be set in increments of 1 pps)
If fixed output is set to ON, Display 2 screen is used to indicate the fixed output in the measurement
mode.
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Operation when fixed output is set to ON
Current output
Pulse output
Output is the fixed current output value.
Output is the fixed pulse rate pulse signal.
Digital output other than
pulse output
Status in hold
Display
Display 2 screen: Used to indicate the fixed output
(Note)
Display example:
*
3 0 0 0 P P S *
*
*
2 0 . 0 m A
First line:
Pulse count (5 digits maximum), Unit: (PPS) fixed
Second line: Current output (4 digits including a decimal point), Unit: (mA) fixed
This fixed value output function does not work in the calibration mode.
When OFF is selected in the fixed output function, the setting for output is not needed.
●Changing the fixed output function
The following procedure shows how to set the fixed output to ON and set the fixed current
value/fixed pulse value. The fixed current value and fixed pulse value can be set
independently.
Switch operation
Description
Select "FIX SET" from the setting item
selection menu.
Display example
O:FIX OUT
1 FIX SET
2 CUR VAL
3 PLS VAL
4 EXIT
ESC
FIX SET
The current setting (OFF in this example)
appears.
STEP1
STEP2
STEP3
OFF
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
FIX SET
The switches at the bottom change.
are shown.)
(
OFF
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
FIX SET
ON
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
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Switch operation
STEP4
Description
, a message appears
to confirm whether the setting is OK or not.
Display example
FIX SET
When you push
ON
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
and exits the setting screen.
cancels the setting operation
ESC
ESC
N O
O K
CUR VAL
04.0
mA
The screen automatically changes to the
fixed current value setting screen.
The currently set value (4.0mA in this
example) appears.
STEP5
O K
CUR VAL
Push
to move the cursor to the
STEP6
STEP7
digit you want to change and push
to change the number of the digit.
20.0
mA
CUR VAL
When you push
to confirm whether the setting is OK or not.
, a message appears
20.0
If OK, push
setting, push
. If you want to redo the
.
O K
N O
mA
SET OK?
ESC
Pushing
cancels the setting operation
and exits the setting screen.
O K
ESC
N O
PLS VAL
00000
PPS
The screen automatically changes to the
fixed pulse rate setting screen.
The currently set value (0 PPS in this
example) appears.
STEP8
O K
PLS VAL
Push
to move the cursor to the
STEP9
digit you want to change and push
to change the number of the digit.
00100
PPS
PLS VAL
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP10(=END)
00100
If OK, push
setting, push
. If you want to redo the
.
O K
N O
PPS
SET OK?
ESC
Pushing
cancels the setting operation
and exits the setting screen.
O K
ESC
N O
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Note 1: If you try to set a value outside of the range, 2.4mA or 24mA (in the case of fixed current
output) or 3000pps (in the case of fixed pulse output) will be forcibly set.
Note 2: The pulse width set in Section 8.2.20 is used for fixed pulse output. The pulse width must not
be greater than 40% of the period of the fixed output set frequency. However, if the setting
exceeds 1000pps, the pulse width automatically will be set to 40% of the period of the fixed
output set frequency.
Note 3: If the fixed output is set to ON, the screen automatically changes to the fixed output current
value and fixed output pulse value setting screen. However, the fixed output actually starts
when the fixed output pulse value setting is completed. (If the fixed output current value or
fixed output pulse value is set independently, the fixed output starts when either of the setting
is completed.)
8.2.26 Password Setting
The password function is provided to prohibit the settings and adjustment for some of the functions
affecting the flow measurement. See the setting menu in 7.4 “Setting and Calibration Items Selection
List.”
You can check or change the password as described below.
●Checking the password
Switch operation
Description
Select "PASSWORD" from the setting item
selection menu.
Display example
P:OTHERS
1 PASSWORD
2 LCD ADJ
3 SW POSN
4 EXIT
ESC
PASSWORD
The currently set password appears.
STEP1
123
ESC
P:OTHERS
1 PASSWORD
2 LCD ADJ
3 SW POSN
4 EXIT
Pushing
menu.
returns you to the setting
STEP2(=END)
ESC
ESC
ESC
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* However, if a wrong password is entered when the mode is changed from the measuring mode to the
setting mode, ***appears and the password cannot be checked.
Switch operation
Description
Display example
PASSWORD
The currently set password is displayed as
***and the password cannot be checked.
***
ESC
●Changing the password
The following is an example to change the password from 123 to 453.
Switch operation
STEP1
Description
Select "PASSWORD" from the setting item
selection menu.
Display example
PASSWORD
123
The currently set password (123 in this
example) appears.
Then push
.
ESC
PASSWORD
123
The switches at the bottom change.
are shown.)
At the same time, the cursor appears.
STEP2
(
PASSWORD
453
Push
to move the cursor to the
STEP3
digit you want to change and push
to change the number of the digit.
PASSWORD
453
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
ESC
Pushing
cancels the setting operation
and exits the setting screen.
O K
ESC
N O
Note 1: If you set 000 for the password, it is considered as if the password is not used. In this case, the
password input confirmation screen does not appear when you move from the measurement
mode to the setting mode and all parameter setting items and restrictions on the parameter
setting items and calibration screen will be released.
Note 2: When you set your password, please be sure not to forget your password.
The password including how to check the password should be managed based on the
management standard of the system you use.
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8.2.27 LCD Adjustment
This section describes how to set the LCD density adjustment value for the converter display.
The LCD density can be set in 5 levels.
LCD density adjustment level
LCD density
1
2
3
4
5
Light
Dark
The LCD density adjustment value is set to "3" when shipped from the factory.
The display of the LCD gradually becomes thinner over time.
If the display is getting difficult to read, you need to adjust the density level using this parameter.
The following is an example to change the LCD density adjustment level from 3 to 5 DARK.
Switch operation
Description
Select "LCD ADJ" from the setting item
selection menu.
Display example
P:OTHERS
1 PASSWORD
2 LCD ADJ
3 SW POSN
4 EXIT
ESC
LCD ADJ
The current setting (3 in this example)
appears.
STEP1
3
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
LCD ADJ
The switches at the bottom change.
are shown.)
STEP2
(
3
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
LCD ADJ
5 DARK
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
LCD ADJ
5 DARK
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
O K
N O
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8.2.28 Switch Position Setting
The switch position of the converter display can be set.
The position setting of the switch enables the display remains the same in orientation, regardless of
which direction relative to the piping the converter is installed.
You can set the switch position by selecting one from four positions described below.
(1) Switch position: TOP
The infrared switches are located at the top with the front facing you.
ESC
Infrared switches
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
(2) Switch position: BOTTOM (Standard)
The infrared switches are located at the bottom with the front facing you.
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Infrared switches
ESC
(3) Switch position: LEFT
The infrared switches are located at left with the front facing you.
A:DETECTOR
ＥＳＣ
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Infrared switches
(4) Switch position : RIGHT
The infrared switches are located at right with the front facing you.
A:DETECTOR
1 EXC CUR
ＥＳＣ
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Infrared switches
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The following is an example to change the switch position setting from BOTTOM to TOP.
Switch operation
Description
Select "SW POSN" from the setting item
selection menu.
Display example
P:OTHERS
1 PASSWORD
2 LCD ADJ
3 SW POSN
4 EXIT
ESC
SW POSN
The current setting (BOTTOM in this
example) appears.
STEP1
BOTTOM
Then push
.
* Pushing
screen.
returns you to the menu
ESC
ESC
SW POSN
The switches at the bottom change.
are shown.)
STEP2
(
BOTTOM
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
SW POSN
TOP
You can continue to change the setting item.
STEP3
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
SW POSN
TOP
When you push
to confirm whether the setting is OK or not.
, a message appears
STEP4(=END)
If OK, push
setting, push
. If you want to redo the
.
O K
N O
SET OK?
Pushing
cancels the setting operation
ESC
and exits the setting screen.
ESC
O K
N O
8.2.29 Communication Setting
This setting is needed when optional PROFIBUS communication board is installed.
For details, refer to the instruction manual of PROFIBUS communication board.
*If communication board is not used, this address setting is not needed.
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8.3 Parameter initial settings list
Unless otherwise specified, the default values for each parameter shown below are set when shipped from
the factory:
Parameter names
Excitation frequency
Default value
(*1)
Flow direction
Display 1
Display 2
Display digit setting
(for Display 1 and Display 2)
Custom coefficient
Custom unit
NORMAL
gal/min
COUNT B
1/1000
1.0
“ CUSTOM”(Head of character string is blank )
Range type
Range 1
Ranges 2 to 4
Hysteresis
Single
300 gal/min
0 gal/min
3.0 %
Damping constant
Rate-of-change limit
Control limit time
Low cutoff
5.0 s
0.0 %
0.0 s
1.0 %
Display low cutoff
Manual zero
LINEAR
0.0 %
4mA
4mA
4−20mADC alarm output
Output low limit setting
Digital output 1
NO USE
NO USE
NormOPEN
NO USE
H LEVEL
100 gal
AUTO
5 ms
Digital output 2
DO1/DO2 active status
Digital input
DI detective level
Count rate
Pulse width setting mode
Pulse width
Preset count
Preset function
00000000
HOLD
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
NORMAL
ON
CONV ONLY
OFF
4mA
High alarm On/Off
High alarm value
Low alarm On/Off
Low alarm value
High-High alarm On/Off
High-High alarm value
Low-Low alarm On/Off
Low-Low alarm value
Empty pipe alarm
Self-diagnosis On/Off
Converter alarm
Fixed value output
Fixed value current
Fixed value pulse
Password
0 pps
000
LCD density adjustment
Switch position setting
3
BOTTOM
*1: See the setting values for each meter size in the table below.
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Setting values for each meter size
Range 1 (SI unit)
Range 1 (English unit)
Meter Size
(mm/inch)
Ex. Freq
(Hz)
Count rate
(gal)
(m3/h)
6
(m/s)
3.395
3.316
3.537
3.316
3.537
(gal/min)
75
(ft/s)
31.625
28.826
31.625
26.766
26.354
25 / 1
40 / 1.5
50 / 2
400
200
200
200
100
1
15
175
1
25
300
10
10
10
80 / 3
60
650
100 / 4
100
1000
－ 102 －
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9. Mag-Prover-Calibration
9.1 Calibration Items
When you check or calibrate the converter or check the excitation current, you have to change the mode to
the calibration mode.
You can check or change the zero and span of the converter and the excitation current value as described
below.
However, calibration is already performed when shipped from the factory. Do not perform
change calibration unless it is specificity required.
Items
9.2.1
Function items
0 % flow rate calibration
Display example
CAL 0%
CAL 50%
CAL 100%
EXC DSPL
9.2.2
9.2.3
9.2.4
50 % flow rate calibration
100 % flow rate calibration
Checking the excitation current output
－ 103 －
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9.2 Calibration Using Mag-Prover’s Built-In Signal Source
9.2.1 0 % Flow Rate Calibration (Zero Calibration)
Using Mag-Prover’s internal calibration circuit, 0% flow rate calibration (hereafter called zero
calibration) can be performed.
●Zero point check / calibration
Switch operation
Description
Select "CAL 0" from the setting item
selection menu.
Display example
R:CAL
1 CAL 0%
2 CAL 50%
3 CAL 100%
4 EXC DSPL
5 EXIT
ESC
CAL 0%
When the calibration screen is selected, the
internal simulation circuit starts working and
0% value using the internal simulation
signal appears.
STEP1
STEP2
0.1
%
Then push and hold
longer.
* Pushing
menu.
returns you to the setting
ESC
ESC
ADJ READY
The title of the screen changes to “ADJ
READY” and the converter is is ready for
calibration.
0.1
%
Pushing
screen.
returns you to the previous
N O
Longer
STEP3
N O
O K
NOW 0%
ADJUSTING
Push
to start calibration for 0% flow
O K
rate.
O K
CAL 0%
It takes several seconds to perform
calibration for 0% flow rate and the
simulated value of 0% after calibration
appears.
STEP4(=END)
0.0
%
Pushing
menu.
returns you to the setting
ESC
ESC
Note 1: To perform calibration, push and hold
longer.
Note 2: To cancel the adjustment when ADJ READY is displayed, push
.
N O
The screen returns to the zero display using the simulation input.
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9.2.2 50 % Flow Rate Calibration
Using Mag-Prover’s internal calibration circuit, 50% flow rate calibration can be performed. For
calibration procedure, see the calibration procedure for 0% flow rate. (For 50% flow rate calibration,
select "CAL 50" from the setting menu.)
9.2.3 100 % Flow Rate Calibration (Span Calibration)
Using Mag-Prover’s internal calibration circuit, 100% flow rate calibration can be performed. For
calibration procedure, see the calibration procedure for 0% flow rate. (For 100% flow rate calibration,
select "CAL 100%" from the setting menu.)
9.2.4 Checking the Excitation Current
You can monitor the exciting current value.
●Checking the exciting current value
Switch operation
Description
Select "EX DSPL" in the setting item
selection screen.
Display example
R:CAL
1 CAL 0%
2 CAL 50%
3 CAL 100%
4 EXC DSPL
5 EXIT
ESC
EXC DSPL
The excitation current value appears.
STEP1
0.1998
A
Pushing
menu.
returns you to the setting
ESC
ESC
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10. Functional Description
The LF516/LF546 Electromagnetic Flowmeter is equipped with two contact output terminals (digital
output terminals (DO1, DO2)) and one external input terminal (digital input (DI), optional), enabling
you to use various functions, such as pulse output and alarm output.
The following functions are provided using the digital I/O functions are described below.
Functions
Required DO, DI
Outline description
Totalizes the flow volume in volumetric unit.
The totalized flow volume can be output (pulse output) for each unit
of volume.
The totalizer and pulse output can be controlled (start, stop and reset)
by an external signal.
DO:1
DI:0 or 1
Totalization
Multiple measuring ranges can be selected in accordance with the flow
rate. The measuring ranges can be selected either automatically or by
an external signal.
DO:1 or 2
DI:0 or 1
Multiple ranges
Forward and reverse flows can be measured. The forward and reverse
flow measurements can be used together with multiple ranges function.
Forward and reverse ranges
DO:1
DO:1 or 2
DO:1
High / Low alarm
High-High / Low-Low alarm
Outputs an alarm signal when the flow rate signal exceeds or lowers
below the preset values.
When the totalizer count exceeds its preset value, the converter
outputs a contact output signal.
Preset counter
Remote still water
zero adjustment
DI:1
Still water zero adjustment can be started by an external signal.
Arbitrarily fixed current output and/or fixed pulse output can be used to
check a process loop circuit of output.
The fixed output mode can also be selected by an external signal.
Remote fixed value output
Converter failure alarm
DI:1
The converter outputs an alarm signal if an error such as memory error
or excitation circuit error occurs.
DO:1
Working in line with upper/lower range selection by an external signal,
high/low alarm and high-high / low-low alarm can be switched for the
flow rate signal to output an alarm signal.
Multi-range high
DO:2
DI:1
/ low alarm (option)
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10.1 Digital I/O Specifications
The specifications of the digital I/O terminals for the converter for electromagnetic flowmeter: LF546 are
as follows:
„ Digital Output 1(DO1 )
Output type:
Transistor open collector
Number of outputs:
Capacity:
1
30 V dc, 200 mA maximum
„ Digital Output 2(DO2 )
Output type:
Solidstate relay (non polarity)
Number of outputs:
Capacity:
1
150 V dc, 150 mA maximum
150 V ac(peal-to-peak), 100 mA maximum
„ Digital Input (DI )
Input signal:
20 to 30 V dc voltage signal
• High input level—20 to 30 V dc
• Low input level—2 V dc maximum
Approximately 2.7 kΩ
Input resistance:
Number of inputs:
One point
• Each I/O terminal can be used as a specified function terminal when selected.
• Terminal COM is the signal COMMON for the other three terminals (DO1, DO2 and DI).
• Each terminal is isolated from the internal circuits.
(The output terminals are not isolated from each other.)
Solidstate relay
Transistor open collector
(Standard)
Photo coupler
Resistor
Flowmeter
COM
DI
DO2
DO1
Voltage input (DI)
Contact output 2 (DO2)
Contact output 1 (DO1)
－ 107 －
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10.2 Totalizer and Pulse Output
To use the totalizer and pulse output for external use, proceed as follows.
Count rate and Pulse Width Setting
Set the flow volume per count (pulse) (count rate) and the pulse width. See 8.2.20, “Count
rate, Pulse Width Setting Mode and Pulse Width.”
* The count rate can be set within the range below in reference to the
setting range:
3.6 (pulse/s) to 10800000 pulse/h
(1/1000 pulse/s to 3000 pulse/s) (Note 1)
* The pulse width can be set within the range 0.3ms to 500ms.
However, the pulse width must be set to 40% or less of the period of
output frequency at full scale. (Note 2)
If the pulse width setting mode is AUTO, the pulse width is automatically set. If the pulse width
setting mode is MANUAL, set it after checking the acceptable signal width of the receiving
instruments.
If pulse output is not used, pulse width setting is not needed.
DO setting
Refer to 8.2.18, "Digital Output" to set the Digital Output 1 (DO1) for Pulse output (PLS
OUT).
If the digital output function is not set (NO USE) though count rate is set, it will be set to
pulse output automatically.
If pulse output is not used, this setting is not needed.
Return to Measurement Mode
Set the operation mode of the system to the measurement mode. Refer to 7.3.1, “Changing the
Mode.”
Clear (reset) the totalizer. (Note 3)
CLR
Clear the count by pushing and holding
If you have changed the count rate, clear (reset) the totalizer before you start the totalizer.
Start the totalizer. (Note 3)
Start the totalizer by pushing
on the totalizer control screen.
on the totalizer control screen and check that “ ” is
shown on the display indicating that the totalizer is in operation.
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Note 1: Example of count rate setting range:
The count rate can be set within the range from the minimum value (36000000 pulse/h) to the
maximum value (3.6 pulse/h).
(Example)
In the case of range 108m3/h (0.03m3/s),
Minimum value (for 10800000 pulse/h):
108 (m3/h) / 10800000 (pulses/h) = 0.00001m3 = 0.01 L (liter)
Maximum value (for 3.6 pulse/h):
108 (m3/h) / 3.6 (pulses/h) = 30m3
Note 2: Example of pulse width setting range
The pulse width can be set within the range 0.3ms to 500ms in increments of 1ms. However,
the pulse width must be set to 40% or less of the period of pulse frequency at full scale
because of the setting range and count rate requirements.
If “0” is set, the pulse width automatically will be set to 40% of the period of pulse frequency
at full scale. (100ms max.)
(Example 1)
Range: 108m3/h (0.03m3/s)
Count rate: 0.00003m3
Since the pulse rate is
108(m3/h) / 0.00003(m3) =36000000 pulses/h =1000pulses/p,
the period of pulse frequency at full scale is 1ms.
Therefore, the pulse width can be set only to
1ms × 40% = 0.4ms
(Example 2)
Range: 108m3/h (0.03m3/s)
Count rate: 30m3
Since the pulse rate is
108(m3/h) / 30(m3) = 3.6 pulse/h (0.001 pps),
the period of pulse frequency at full scale is 1000000ms
Therefore, the pulse width = 1000000ms × 40% = 400000ms.
However, the maximum pulse width is 500ms,
the pulse width becomes 500ms.
(Example 3)
Range: 108m3/h (0.03m3/s)
Count rate: 0.03m3
When pulse width is set to 0ms:
Since the pulse rate is
108 (m3/h) / 0.03(m3) = 3600 pulse/h (1pps)
the period of pulse frequency at full scale is 1000ms.
Therefore, the pulse width = 1000ms × 40% = 400ms.
However, the pulse width that automatically set is 100ms max.
the pulse width becomes 100ms.
Not 3: Model LF546 has a function to start / stop or clear the totalizer. For details of operation, see
“Totalizer Operation” below.
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Totalizer Operation
●Operation using the operation switches
You can start, stop or clear the totalizer as described below.
Switch operation
Display example
Description
Mode change screen
PUSH SW
CNT:
CNT CTRL
SET:
SET MODE
SET
CNT
ESC
CNT CTRL
When you push
mode, the screen moves to the totalizer
in the measurement
CNT
12345678
control screen.
CNT
Totalized flow count (both directions)
appears automatically on this screen.
In addition, the switches
FRD ■
CLR
ESC
(
are shown.)
CLR
ESC
*
is displayed while the totalizer is in operation and
is stopped.
* If an erroneous password is input when password is asked, or if it is a sealed
is displayed when it
■
specification,
is not displayed.
CLR
CNT CTRL
When you push
counting and
addition,
, the totalizer starts
appears on the screen. In
12345679
FRD
changes to
.
■
CLR
ESC
■
CNT CTRL
12345679
When you push and hold
confirmation message appears.
longer, a
CLR
CLR
Longer
FRD
CLR OK?
NO
OK
CNT CTRL
Pushing
pushing
Pushing
clears the totalizer and
cancels the clear operation.
at the end returns you to the
OK
NO
0
ESC
OK
measurement mode.
FRD
CLR
ESC
■
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Note 1:Since the flow volume direction code is B (Bidirectional forward/reverse automatic selection),
•When you select forward/reverse multi-range,
forward direction totalized value (count value) is displayed for operation in the
forward direction range, and reverse direction totalized value (count value) is
displayed for operation in reverse direction range.
Note 2:If you reset the totalizer, flow counts for both directions will be cleared to zero at the same time.
Note 3:Non-volatile memory is used to store the totalizer count. Therefore, the value will be retained in
the memory even if power is turned off.
●Operation using the digital input
Remote operations for the totalizer and pulse output can be performed using the digital input.
Set the digital input function for this purpose referring to 8.2.19 “Digital Input.”
Operation with digital input (Default setting: Control signal level is in H level)
Digital input functions
DI input
Totalizer and pulse output operation
L level
Stops the totalizer and pulse output.
Totalizer
Start/Stop
H level
H level
L level
Pulse signal is outputted.
Clears the count and stops the totalizer.
Pulse signal is outputted.
Totalizer
Reset/Start
You can reverse the DI control signal level. See 8.2.19 “Digital Input.”
• When H level (H LEVEL) is selected:
The operation with the signal level is the same as the default setting above.
• When L level (L LEVEL) is selected:
The operation with the signal level is the same as the one shown below.
Operation with digital input signal (Control signal level: L level)
Digital input functions
DI input
Totalizer and pulse output operation
L level
Pulse signal is outputted.
Totalizer
Start/Stop
H level
H level
L level
Stops the totalizer and pulse output.
Pulse signal is outputted.
Totalizer
Reset/Start
Clears the count and stops the totalizer.
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10.3 Multi-range Function
Four types of multiple ranges shown below can be selected by setting the range type:
(1) Unidirectional flow, automatic selection of multiple ranges
(2) Bidirectional flows, automatic selection of multiple ranges
(3) Unidirectional flow, multiple ranges selected by external signal
(4) Bidirectional flows, multiple ranges selected by external signal
Proceed as follows to use the multi-range function.
Range setting
Refer to 8.2.9, “Span (Range)” to set as follows:
1. Select the Range type.
2. Set the span for Ranges 1 to 4.
3. Set the Hysteretic value.
DO/DI setting
Refer to 8.2.18, “Digital Output” and 8.2.19, “Digital Input” to set Digital Output 1
(DO1) and/or Digital Output 2 (DO2) to use them as Range outputs.
To use the multiple ranges selected by external signal, set the Digital Input (DI) as a
switch to select the ranges.
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„ Output performance of multi-range functions
14. Automatic selection of unidirectional flow multi-range with an internal signal
Output (%)
125
Range 1
20mA
100
Range 4
Range 3
Range 2
Hysteresis
(0~25%)
0
4mA
Reverse
0
Forward direction
Flow rate direction
Range output No.1
Range output No.2
ON
OFF
ON
ON
OFF
OFF
・ Current output when fluid flows in the reverse direction is the value set for the output low limit
(any one of 2.4/3.2/4.0mA).
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(2) Automatic selection of bidirectional flows multi-range with an internal signal
output (%)
125
100
Range 3
Range 1
20mA
Range 2
Range 4
Hysteresis
Hysteresis
0
4mA
Flow rate
Reverse direction
0
Forward direction
Range output No.1
Range output No.2
OFF
ON
ON
OFF
OFF
ON
„ Reverse to Forward direction change
■ Forward to Reverse direction change
Output
Output
←Low cutoff x 1.25
Low cutoff x 1.25→
Low cutoff
←Low cutoff
x 1.25
x 1.25→
4mA
0
0
-(Low cutoff x 1.25)→
← -(Low cutoff x 1.25)
Reverse direction
0
Forward
Flow rate
OFF
Reverse
0
Forward
OFF
Flow rate
Range output
No.2
Range output
No.2
ON
ON
From reverse range to forward range
From forward range to reverse range
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(3) Remote selection of unidirectional flows multi-range with an external signal
Output (%)
125
100
Range 2
Range 1
0
4mA
Reverse direction
External signal
0
Forward direction
Flow rate
H level input
ON
L level input
OFF
Range output No.1
• Current output when fluid flows in reverse direction is the output low limit setting (any one of 2.4 /
3.2 / 4.0mA).
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(4) Remote selection of bidirectional flows multi-range with an external signal
Output (%)
125
100
Range 3
Range 1
Range 2
Range 4
↓
↓
0
4mA
Flow rate
Reverse direction
L level
0
Forward direction
External signal
H level
ON
H level
ON
L level
OFF
Range output No.1
Range output No.2
OFF
ON
OFF
„ Reverse to Forward direction change
■ Forward to Reverse direction change
Output
Output
←Low cutoff x 1.25
Low cutoff x 1.25→
Low cutoff
←Low cutoff
x 1.25
x 1.25→
4mA
4mA
0
0
-(Low cutoff x 1.25)→
← -(Low cutoff x 1.25)
Reverse direction
0
Forward
Flow rate
Reverse
0
Forward
OFF
Flow rate
Range output
No.2
Range output
No.2
ON
OFF
ON
From reverse range to forward range
From forward range to reverse range
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10.4 Flow Rate High/Low, High-High/Low-Low Alarm Output
To use the flow rate high/low alarm or high-high/low-low alarm output, follow the procedure below.
High / Low alarm setting
Refer to 8.2.23, “Flow Rate High/Low Alarm and High-High/Low-Low
Alarm” and set the high alarm and/or low alarm to ON and set the limit value for
high and/or low alarm.
For alarms not used, set its setting to OFF.
High-High / Low-Low alarm setting
Refer to 8.2.23, “Flow Rate High/Low and High-High/Low-Low Alarm” and
set the high-high alarm and/or low-low alarm to ON and set the limit value for
high-high alarm and/or low-low alarm.
For alarms not used, set its setting to OFF.
DO setting
Refer to 8.2.18 "Digital Output" to set the Digital Output 1 (DO1) and
Digital Output 2 functions (DO2) for high alarm output/low output alarm or
high-high alarm output/ low-low alarm output.
In addition, set the alarm active status, either Normally Open or Normally Closed.
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„ High and Low Limit Alarm Output Performance (Same as for High High/Low Low limit
Alarm Output)
• Single range performance
Output (%)
High limit value
Hysteresis
2.5%
Hysteresis
2.5%
Low limit value
Alarm output
Alarm output
Alarm output
Time
• Multi-range performance
In an example shown below, a low limit alarm is set for the Range 2 and a high limit
alarm is set for the Range 1.
Output (%)
Hysteresis
2.5%
Range 1 High
limit value
Hysteresis
2.5%
Range 2 Low
limit value
Alarm output
Alarm output
Alarm output
Time
*When an alarm output condition occurs, Digital output 1 and 2 change to the output status set for an
alarm output condition. Alarm output contact is open while the converter is powered off.
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10.5 Preset Count Function
When the totalizer count reaches the preset count value, the converter outputs a contact signal.
Proceed as follows to use the preset count function.
Totalizer setting
Refer to 10.2 “Totalizer and Pulse Output” to set necessary settings for
totalizer.
Preset count,
Preset count function setting
• Refer to 8.2.21, “Preset Count” to set the desired preset count.
• Refer to 8.2.22, “Preset Mode” to select the desired preset output function.
DO/DI setting
• Refer to 8.2.18, “Digital Output” and 8.2.19, “Digital Input” to set Digital
Output 1 (DO1) or Digital Output 2 (DO2) for use as preset count function
output.
In addition, if you want to reset the totalizer by an external signal, set the Digital
Input (DI) as totalizer Reset / Start signal. (Set DI FUNC to “CNT RS/ST.”)
Refer to 8.2.19, “Digital Input” to use the Digital Input (DI) and set the control
signal level in accordance with the external input signal.
When the operation switch on the converter is used to reset the totalizer, the digital
input function (DI) setting is not needed.
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„ Preset count output performance
(1) The following is an example for totalizer flow counts output in which the totalizer is reset with an
external signal (when preset output status level hold mode is set (contact ON)).
H level input
Counter Reset/Start signal
(DI detective level is H).
L level input
Totalizer flow counts
Preset point
0
Counter reset
Counter reset
Counter start
ON
Preset point output
OFF
Input/Output signal time chart
*When the Reset/Start signal is in H level (DI counter control signal level: H), the totalizer is reset to
zero and stops counting. When the Reset/Start signal goes to L level, the totalizer starts counting.
The preset point output goes ON when the totalizer counts reaches the preset point, and the output
goes OFF when the totalizer is reset to zero.
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(2) The following is an example for totalizer flow counts output in which the totalizer is reset with an
external signal (when one-shot pulse output mode is set).
Counter Reset/Start signal
(DI detective level is L).
H level input
L level input
Totalizer flow counts
Preset point
0
Counter reset
Counter reset
ON
Counter start
Preset point output
OFF
For the totalizer is reset to zero,
the preset output goes OFF.
For it takes the time set pulse width from
the output goes OFF
Input/Output signal time chart
* When the Reset/Start signal is in L level (DI counter control signal level: L), the totalizer is reset to
zero and stops counting. When the Reset/Start signal goes to H level, the totalizer starts counting.
The preset point output goes ON when the totalizer counts reaches the preset point. The output
goes OFF when the totalizer is reset to zero or when it takes the time set pulse width from the
output goes ON.
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(3) The following is an example for one-shot pulse output.
Setting preset count:100
200
100
Totalizer flow counts
0
ON
Preset point output
OFF
For it takes the time set pulse width
from the output goes OFF
Input/Output signal time chart
* Preset output goes ON when the count value exceeds the preset value of 100 and the preset output
goes OFF when its width reaches the set pulse width.
When the preset value exceeds 100, the preset value is changed to 200 (adding the preset count of 100
to the current preset value of 100).
Then, the preset output goes ON when the count value exceeds the preset value of 200, and the
preset output goes OFF when its width reaches the set pulse width.
When the preset value exceeds 200, the preset value is changed to 300 (adding the preset count of
100 to the current preset value of 200).
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Note:
When the one-shot pulse output function is selected, if its pulse width is large compared
with the update period of the preset value. The output stays ON. To make sure to output as
one-shot pulse, set the preset value reach interval to be 2 signals or more of the pulse width
setting value.
Example) Count rate:0.01 l
Flow verosity:10 l/s
Totalizer count up rate:1ms/COUNT
Preset Pulse
Width
The Interval of that Totalizer
reaches the Preset Point
50ms
More than 100ms
More than 1000ms
Preset Count: more than 100
Preset Count: more than 1000
500ms
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10.6 Remote Zero Adjustment
On-stream zero adjustment in a zero flow rate condition can be started with an external signal.
To do this, set DI as a zero adjustment start signal. See 8.2.19, “Digital I/O”
[Signal Input Timing]
H level
Zero adjustment
start signal
L level
▲
Zero adjustment start
10 seconds
20 seconds
*The start signal must be set to H level first, then it must go to L level after the passage of more
than 10 seconds but not more than 20 seconds, as shown above.
If the signal does not go to L level within this specified period, it will be ignored.
10.7 Remote Selection of Fixed Value Output
A user-specified 4-20 mA output and pulse output can be selected with a DI signal.
Proceed as follows to use this function:
Fixed-value setting
„ Set the fixed-value for current output and for pulse output. See 8.2.25, “Fixed-Value
Output.” Set the fixed-value output enable/disable status to “OFF.”
If the pulse output is not used, fixed-value setting for pulse output is not needed.
DI function setting
„ Set DI to use as a fixed-value output control signal. See8.2.19, “Digital Input.”
Control signal input conditions:
Control signal input level
L level
H level
4 –20 mA and pulse output
Outputs the measured value.
Outputs the fixed-value.
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10.8 Converter Failure Alarm
If any one of the following errors occurs in a self-diagnosis sequence, the converter issues an alarm
using a contact output.
●Self-diagnosis errors
Self-diagnosis errors (LCD display)
Error items
ROM ERROR
ROM error
RAM error
RAM ERROR
PARAMETER
FAILURE
EXC CUR
OPEN
System parameter error
Excitation circuit not connected or open
Excitation current error, excitation circuit error
EXC CUR
ERROR
ADC ERROR
ADC error
INVALID
TOTAL
Invalid totalizer counts
Note: A self-diagnosis error message appears on the Display 2 measured value screen. If this
happens, the measurement item specified on the Display 2 screen cannot be displayed
unless the error is removed. However, if OFF is set to 8.2.24
, “Self Diagnosis Function Setting,” an error does not appears even if an error occurs.
If you want to use a converter alarm output, set Digital Output 1 (DO1) or Digital Output 2
(DO2) for converter alarm output (CONV ALM) following 8.2.18, “Digital Output.”
In addition, set the alarm output condition to normally open (NormOPEN) or normally
closed (NormCLOSE) status.
●Contact output condition
NormOpen;
NormClose;
In case an error occurs, contact is closed.
In case an error occurs, contact is open.
Note: Alarm output contact is open when converter power is off.
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10.9 Multiple range high/low limit alarm function (option)
The procedure to use multiple range high/low limit alarm is shown below.
Range setting
・Set the range in accordance with 8.2.9 Span (range) in the following order.
1. Set the range type to “unidirectional flow, multiple ranges selected by
external signal”.
2. Set Range 1 and Range 2 respectively.
DO setting (Note 1)
・Set digital output 1 and 2 (DO1, DO2) function to multiple range high limit
alarm output and multiple range low limit alarm output respectively in
accordance with 8.2.18 Digital I/O.
Also set the alarm output state to either of normally open or normally close.
DI setting
・Set digital input (DI) function to RANGE SW in accordance with 8.2.19
Digital I/O.
High/Low limit
alarm value setting
・Set high limit alarm and low limit alarm to ON and set alarm value to high
and low alarms respectively in accordancewith 8.2.23 Flow Rate High, Low,
High-High and Low-Low limit Alarm Setting.
Set the alarm not to use to OFF.
High High/Low Low limit
alarm value setting
・Set high-high alarm and low-low alarm to ON and set alarm value to them
respectively in accordance with 8.2.23 Flow Rate High, Low, High-High
and Low-Low limit Alarm Setting.
Set the alarm not to use to OFF.
(Note 1) When setting DO using HHT AF900 (Ver2.40 or older), set alarm outputs
as below:
Multiple range high limit alarm output
Multiple range low limit alarm output
SPECIAL-B,
SPECIAL-A
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Multiple range high/low limit alarm output
Flow rate
High limit
Low limit
High-high limit
Low-low limit
Time
Multiple range
DO1
High limit alarm output
Alarm output ON
Alarm output ON
Alarm output ON
Multiple range
DO2
Low limit alarm output
Alarm output ON
Small range (Range 2)
Alarm output ON
Large range (Range 1)
DI range select signal
Note 1: Range changes to Small range when range select signal is H level, and to Large range in L
level.
Note 2: High-high/low-low limit alarm is activated when Small range is selected. High/low limit
alarm is not output to display.
High/low limit alarm is activated when Large range is selected. High-high/low-low
limit alarm is not output to display.
Note 3: Alarm output state is the same state to which digital output 1 or 2 is set. When converter
power is OFF, contact output is OPEN.
Note 4: Each alarm set value % is the percent set to the first range.
Note 5: Hysteresis of each alarm is 2.5 % for the first range.
Example
When Large range and Small range are set as below:
Large range (Range 1):
Small range (Range 2):
1000 m3/h
500 m3/h
And you want to set alarm values as below:
Large range alarm set values
High limit value:
Low limit value:
800 m3/h
600 m3/h
Small range alarm set values
High-high limit value: 400 m3/h
Low-low limit value: 300 m3/h
Set the alarm set values as below:
High limit value:
Low limit value:
80 % (800 m3/h÷1000 m3/h=0.8)
60 % (600 m3/h÷1000 m3/h=0.6)
High-high limit value: 40 % (400 m3/h÷1000 m3/h=0.4) See Note4.
Low-low limit value: 30 % (300 m3/h÷1000 m3/h=0.3) See Note4
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10.10 Custom unit function
(1) Display of flow rate
The procedure to display flow rate by the custom unit is shown below.
Example : In the case of custom unit [dL(deciliter)/min].
Custom coefficient setting
・Set the custom coefficient in accordance with 8.2.7 “Custom Coefficient
Setting”. Set the conversion coefficient from m3/min unit to the custom
coefficient. In the case of dL/min, set 10000 that is the conversion coefficient
of dL from m3.
Custom unit setting
・Set the custom unit in accordance with 8.2.8 “Custom Unit Setting”. Set the
character string of unit to the custom unit. In the case of this example, set ‘d’
‘L’ ‘/’ ‘m’ ‘i’ ‘n’. The rest of 1 character is blank space because the maximum
character number of the custom unit is 7.
Display setting
・Set the display item to CUSTOM in accordance with 8.2.6 “Display Setting”.
Measurement value
confirmation
・Return to the measurement mode and confirm the display value. Identification
character “*” showing the custom unit is displayed at the head of custom unit
in the measurement mode.
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(2) Span setting
Setting of 8.2.7 “Custom Coefficient Setting” and 8.2.8 “Custom Unit Setting” is applied to the
custom coefficient and unit same as (1)Display of flow rate.
Example : In the case of custom unit [dL(deciliter)/min].
Custom coefficient setting
・Set the custom coefficient in accordance with 8.2.7 “Custom Coefficient
Setting”. Set the conversion coefficient from m3/min unit to the custom
coefficient. In the case of dL/min, set 10000 that is the conversion coefficient
of dL from m3.
Custom unit setting
・Set the custom unit in accordance with 8.2.8 “Custom Unit Setting”. Set the
character string of unit to the custom unit. In the case of this example, set ‘d’
‘L’ ‘/’ ‘m’ ‘i’ ‘n’. The rest of 1 character is blank space because the maximum
character number of the custom unit is 7.
Span setting
・Select the custom unit dL/min to the span unit in accordance with 8.2.9 “Span
(Range)”. When custom unit is selected, the new span value will be displayed
automatically based on the custom coefficient and custom unit.
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Note1 : Even if the custom unit is selected, the current output does not change unless the
span value is changed.
Description
Display example
In the case of span value = 2.00000 m3/min
R1
2.00000
m3/min
R1
When custom unit dL/min is selected, the span value is
displayed 20000 automatically based on the custom
coefficient.
20000.0
Identification character “*” showing the custom unit is
displayed at the head of custom unit.
*dL/min
Even if setting is fixed in this state, the current output
does not change.
R1
When the span value was changed after the custom
unit selection, the current output changes.
10000.0
The span value is changed into 10000 from 20000 in
display example. The percent value doubles when
setting is fixed in this state, and the current output
changes.
*dL/min
Note2 : Setting range of the span value depends on the custom coefficient.
If the setting high limit of the span value is 1.18 m3/min,
the setting high limit is 11800 dL/min by the custom unit.
Note3 : In the case of the multiple ranges, the custom unit is applied to Range4 from Range2.
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11.Communications Function
LF546 Electromagnetic Flowmeter converter uses the HART*1 protocol to transmit digital signals over
the 4-20mA output line. The AF900 hand-held terminal is used to communicate with the LF546 using
the HART protocol. Through remote operation, you can check or change the various parameters,
calibrate the flowmeter or monitor the measurement value.
For detailed operation and specifications of HHT, refer to the instruction manual of the AF900
hand-held terminal for sensor with communication function.
*1 HART protocol:
HART, Highway Addressable Remote Transducer, is a communication protocol for industrial
sensors recommended by HCF (HART Communication Foundation).
By adding an optional PROFIBUS communication board to the converter, the converter can be used as
a PROFIBUS-PA slave device to communicate digital data with PROFIBUS master device .
For details of PROFIBUS communication, refer to the instruction manual of PROFIBUS
communication for LF546.
11.1 Connections with HHT Terminal
Connect the input cable of HHT terminal across the load resistance connected from the current output
terminals (+ and −). Since the cable end is a pair of clips, use a junction terminal or terminal block to
connect with the load resistance. To connect the HHT directly to the flowmeter, use the terminals + and
−. The HHT input cable has no polarity.
See Figures 11.2 and 11.2 for connection examples.
4−20mA DC (communication line)
Load resistance
Terminal block or
junction terminal
Example of a flowmeter
Converter is built in the housing
HHT
Figure 11.1 Connections to the Current Output Line
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HHT connection cable and clips
Converter terminal block
HHT
Figure 11.2 Connections to the Converter Unit
11.2 Procedure for Communications with HHT
This section describes the HHT basic operation procedure for communications between the flowmeter
and HHT. For details, refer to the HHT instruction manual.
* The following procedure makes a commercially available PDA (OS: Windows Mobile) serve as a
HHT.
Procedure
Operation
Install the AF900 application software to a commercially available PDA (OS:
Windows Mobile) main unit. Then insert the serial interface card supplied with
AF900 to the card slot of the PDA.
①Prepare a hand-held terminal (1)
Connect the HART interface cable and serial interface card supplied with
AF900 to each other.
②Prepare a hand-held terminal (2)
③Connect
Connect the alligator clip at the head of the HART interface cable to the current
output line of the converter via a load resistor.
Turn on the power supply of the PDA to start the AF900 application software.
④Start
Execute [sensor communication]. The model of the connected sensor product
is automatically identified and the converter menu screen appears.
⑤Preliminary communication
⑥Check/change data
⑥Exit the communication
Press the relevant parameter button and check/change data.
When all operations are complete, press the [Exist Application] in the top
screen to turn off the power supply of the PDA.
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11.3 Notes on Communications
● Current output load
(1) Load resistance:240 to 750 Ω (including the communications line resistance)
(2) Load capacitance: 0.25μF maximum (including the communications line capacitance)
(3) Load inductance:4mH maximum (including the communications line inductance)
(The maximum cable length is approx. 2 km when CVV-S 1.25 mm2 cable is used
under standard installation conditions.)
● Connection method
Use a shielded cable (such as CVV-S) for wiring.
● Interference on 4-20mA current signal
To communicate with the flowmeter, a digital signal with amplitude of 0.4 to 0.8 V (in the
case of 500Ω load resistance) with frequency of 1.2 to 2.2 kHz is superimposed on the
4-20mA current signal. If a high-response receiving instrument is connected to the current
output line, the superimposed communications signal may interfere with the instrument. To
prevent this interference, as shown in Figure 11.3, it is recommended that you put a low-pass
filter with a time constant of about 100 ms into the input circuit of the receiving instrument.
Current output line
＋
R
Load resistance
C
－
Converter
Filter
Receiving instrument
Figure 11.3 Example of Filter Connection
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12. Self-Diagnosis and Alarms
12.1 Self-Diagnosis
The converter has a self-diagnosis function to detect errors, such as setting error, I/O error or converter
hardware failure, and shows the resulting error or alarm messages on Display 2 of the screen or on the
hand-held terminal (HHT) through communications.
The diagnosis messages and their corrective actions are described below.
●Setting error
If you try to set a value or a measuring unit outside of the specified range in the setting mode,
one of the following error messages appears to prevent erroneous setting.
LCD display
Description
Corrective action
HIGH OVER
SPEC
Setting value exceeds the allowable high limit.
LOW OVER
SPEC
Setting value goes below the allowable low limit.
Count rate exceeds the allowable high limit.
Count rate goes below the allowable low limit.
Try to set a value within the
specified range.
HIGH OVER
CNT RATE
LOW OVER
CNT RATE
MULTI RNG
ERROR
Span is not appropriate for multi-range configuration.
Try to set the span as specified.
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● High/low alarm, high-high/low-low alarm, empty pipe alarm
One of the following messages appears if the flow rate reading goes out of the set range or an
empty alarm is generated.
If the high or low limit alarm ON/OFF status is set to OFF, its alarm function (high or low) is
disabled. See 8.2, “Check/Change of Parameters.”
LCD display
Description
Corrective action
If high alarm is set, the flow rate reading has
exceeded the set value.
Take necessary actions for the
system.
HIGH ALARM
HIGH HIGH
ALARM
If high-high alarm is set, the flow rate reading
has exceeded the set value.
If low alarm is set, the flow rate reading is
below the set value.
LOW ALARM
LOW LOW
ALARM
If low-low alarm is set, the flow rate reading is
below the set value.
OVER 125%
The measured value is over 125%.
The measure value is below −125%.
The setting range for the
measurement value is too
narrow or the volume of fluid is
too large. Check whether the
setting is correct or if there is
any problem in the process
signal.
UNDER -125%
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● Converter diagnosis error
The converter checks the internal system when power is turned on and generates an error if
abnormality is found.
If multiple errors are found, their messages will be displayed cyclically.
Diagnosis items concerning the excitation circuit are detected using the internal ADC circuit.
Thus, if the ADC error of No.6 occurs, No. 4 excitation cable and No. 5 excitation circuit
errors cannot be detected correctly. Further, this entire diagnosis and display system is based
on the CPU in the flowmeter. Therefore, if the CPU error occurs, normal diagnosis and error
display cannot be obtained.
LCD display
Description
Corrective action
NO.
Internal components
printed-circuit board must be
repaired or replaced.
Contact Toshiba’s salesperson in
charge or distributor in your area.
or
1
2
ROM error
RAM error
ROM ERROR
RAM ERROR
PARAMETER
3
4
System parameter error in the memory
Excitation cables are not connected.
FAILURE
EXC CUR
OPEN
EXC CUR
ERROR
Connect the excitation cables
correctly.
Internal
components
or
5
6
An error occurred in the excitation circuit.
ADC error
printed-circuit board must be
repaired or replaced.
Contact Toshiba’s salesperson in
charge or distributor in your area.
ADC ERROR
Totalizer data in the memory was destroyed The error message disappears if
INVALID
TOTAL
due to external noise.
you clear the totalizer count.
７
(No message appears if data display with
volume unit is not used.)
Note 1: No.1 to No.3 diagnosis items are executed only at the time of power-up. The flowmeter does
not start measurement if any one of these errors is detected.
Note 2: No.4 to No.6 diagnosis items may not be detected even if the error results in incorrect
flowmeter accuracy, due to characteristic differences in components used to detect these
errors.
Note 3: CPU error cannot be detected by the diagnosis system. If the CPU stops, the watchdog timer
resets the internal circuits and the flowmeter starts again from the initial power-un condition.
Depending on the CPU condition, the flowmeter may not indicate and output correct data.
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12.2 Output Status for Errors and Alarms
Error indication Measured value
indication
Current output
(4-20mA)
Totalization
pulse output
Remarks
ROM ERROR
After power-up,
(Note 3)
(Note 3)
Stopped
Stopped
－
(Note 1)
no measurement starts.
After power-up,
RAM ERROR
－
no measurement starts.
PARAMETER
FAILURE
(Note 2)
(Note 3)
Stopped
Zero
―――――――
EXC CUR
OPEN
Still water zero adjustment
cannot be performed.
Still water zero adjustment
cannot be performed.
Still water zero adjustment
cannot be performed.
The error message
(Note 3)
(Note 3)
(Note 3)
Stopped
Stopped
Stopped
Zero
Zero
Zero
EXC CUR
ERROR
ADC ERROR
INVALID
TOTAL
Measured data
Measured data
Measured data
disappears if you clear
(reset) the totalizer count.
―――――――
Measured data
Measured data
Measured data
Measured data
Measured data
Measured data
HIGH ALARM
LOW ALARM
HIGH HIGH
ALARM
―――――――
Measured data
Measured data
Measured data
Measured data
Measured data
Measured data
―――――――
LOW LOW
ALARM
―――――――
Note 1: The display and output may not be correct depending on the nature of the ROM error.
Note 2: If a parameter failure relating to the current output occurs, the current output may not become
the value as specified by the setting when an alarm occurs.
Note 3: The current output value used in case an alarm occurs will be output. For setting method, see
8.2.16, “4−20mAAlarm Output Setting.”
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13. Maintenance and Troubleshooting
WARNING
„ Do not disconnect while circuit is live unless location is known to be nonhazardous.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not modify or disassemble the enclosure.
Strength degradation and defects of enclosure can cause explosion.
DON’T
„ Do not use parts of other products.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Do not live circuits While assembly of all components is not over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the
Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing 3S8A2699
(Refer to Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
CAUTION
„ Do not conduct wiring work when
„ Do not touch the LF516/LF546 main
body when high temperature fluid is
being measured.
power is applied.
Wiring while power is
The fluid raises the main
applied can cause electric
body temperature and can
shock.
cause burns.
DON’T
DON’T
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13.1 Maintenance
„ Calibration
The converter for electromagnetic flowmeter: LF61*F has a built-in internal calibration circuit that can be used
to check the zero and span of the converter for the purpose of instrumentation maintenance,
periodic inspection or re-verification of instrument calibration parameters. See Chapter 9,
“Mag-Prover’s built-in Signal Source”
„ Fuse
The fuse can be taken out by unscrewing the cap of the fuse holder. Check that the fuse is not
damaged. The fuse has to be replaced periodically. The recommended replacement period is 3 years.
Type of fuse used:
Rating:
Glass tube fuse 1 piece
・0.8A, 250 V for 100 to 240 VAC
Diameter 5.2 mm × 20 mm
Dimensions:
Melting time characteristic:
・Time Lag Fuses for 100 to 240VAC
Note: Use a fuse that complies with the Electrical Appliance and Material Safety Law.
„ Check/Replacement of the display unit
When characters displayed on the LCD display become thin or blots come out, please adjust the setting of
LCD's display density. If the display is still not improved, the display unit comes to the end of its life.
Please replace the display unit with a new one. In order to use the display unit stably for a long time, it is
preferable to replace it early. For inspection and replacement, please contact your nearest Toshiba
representative.
„ Power supply unit (also used for excitation board)
Electronic components deteriorate faster when the ambient temperature is high. The life of the power
supply unit in the converter is 9 to 10 years if the ambient temperature is 40°C, and 5 to 6 years if it
is 50° C. To extend the life of the flowmeter, we recommend you replace the power supply unit early.
Contact your nearest Toshiba representative for a flowmeter inspection or unit replacement.
„ Product disposal
The main body or parts of the electromagnetic flowmeter LF516/LF546 must be disposed of, according to the
rules and regulations of your local government.
Especially if you dispose of electrolytic capacitors to replace parts, have it done by an agency which
is licensed to handle industry waste materials.
„ Operative life
The operative life of this flowmeter is 10 years from the date of shipment.
The life of the flowmeter differs depending on the environmental conditions and the way it was used. To
extend the life of the flowmeter, inspect the flowmeter periodically and clean or replace components if
necessary.
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13.2 Troubleshooting
If a problem occurs while using the flowmeter, you may find the cause of the problem by a simple check.
Please follow the flowmeter before you contact a serviceperson.
13.2.1 Flow rate is not indicated.
START
NO
NO
Use the correct power supply
for each device.
Are power supplies correct
for each device?
YES
Are power and I/O cables
installed correctly?
Install the cables correctly.
Refer to Chapter 5, “Wiring.”
YES
YES
NO
Replace the fuse with a new
one.
Is the fuse not burnt?
NO
Set correctly. Refer to
Chapter 8, “Configuration
Parameter Setting.”
Is the flow range correctly
set?
YES
NO
Install the detector correctly.
Refer to Chapter 4,
“Mounting Procedure.”
Is the flow direction
match with the arrow
mark on the detector?
YES
Contact your nearest Toshiba
representative.
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13.2.2 Flow rate indication is not correct.
START
Set correctly. Refer to
Chapter 8, “Configuration
Parameter Setting.”
Is the flow range correctly
NO
set?
YES
Perform the zero adjustment.
Refer to 6, “Operation”
NO
NO
Is zero point correctly set?
YES
Is the excitation current
value as stated on the
flow direction tag?
Set correctly. Refer to 8,
“Configuration parameter
setting”
YES
Is the inside wall of detector
pipe contaminated?
Clean the inside wall of the
detector pipe.
YES
NO
NO
Design the output circuit so that
the output load resistance is less
than 750 Ω.
Is the output load resistance
as specified?
YES
Are there two load
Connect the two load resistors
in series, if necessary.
YES
resistors connected to the
output in parallel?
NO
Is accuracy calculated as follows?
NO
Calculate as shown on the left.
(Measured flow rate)-(Actual flow rate) ×100%
Actual flow rate
YES
Contact your nearest Toshiba
representative.
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13.2.3 Flow rate indication is not stable.
START
NO
Is power supply voltage
within the specified range?
Use a power supply within the
specified range.
YES
NO
Connect each cable securely
to the terminal board.
Are cables securely
connected?
YES
Ground the flowmeter with a
copper braid or wire(5.5 mm²
minimum) to a good earth
ground (100Ωor less ground
resistance).
Is the flowmeter grounded
with 100Ωor less ground
resistance?
NO
NO
YES
Design piping so that the
detector pipe is filled with
fluid all the time.
Is the detector pipe filled
with fluid?
YES
YES
YES
Design piping so that the fluid
does not carry bubbles.
Is the fluid carrying
bubbles?
NO
Is there high-voltage or large
current cable or equipment
near the flowmeter?
Install the flowmeter away
from equipment producing
electromagnetic or
electro- static interference.
NO
Note 1: If the detector tube is not filled with
operating fluid, the flow is indefinite and
measurement is impossible. Be sure to fill
the detector tube with operating fluid
before starting measurement.
Contact your nearest Toshiba
representative.
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13.2.4 When switch operation is unable
START
Does intense light shine on the
control panel such as direct sunlight
or reflected sunlight by window
glass or metal sheet?
Place a cover to block the light from
surroundings, or cover the control
panel by hand to block the light.
YES
NO
Place a cover to block the light from
surroundings, or cover the control
panel by hand to block the light.
Does the brightness change
always by ON/OFF of lighting?
YES
YES
YES
NO
Operate the EMF converter fixing a
light to shine on the control panel as
constantly as possible.
Are you working with unfixed
lighting such as a flashlight?
NO
Place a cover on the control panel to
protect from rain, and operate the
Does the control panel get rained?
NO
Is the control panel attached with
dewdrop, snow, ice, mud or oil?
Is the control panel hazed by
steam?
Clean the attached or haze and operate
the EMF converter.
Further, place a cover to prevent from
attaching.
YES
NO
Clean the stain on fingers or gloves, or
wear gloves in light color and operate
the EMF converter.
Are you wearing dark color gloves?
Or are your finger or gloves
stained?
YES
YES
NO
Secure a space in front of the control
panel to allow a person to stand.
Is there any light reflecting object
near the control panel?
NO
Operate the EMF converter blocking
the light from the reflecting object by
standing in-between the control panel
and the reflecting object.
Is there any reflecting object such
as metal plate placed opposing to
the control panel?
YES
NO
Contact your nearest Toshiba representative.
－ 143 －
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14. Principle of Operation
The operating principle of the electromagnetic flowmeter is based on Faraday's Law of electromagnetic
induction and it is designed to measure the volumetric flow rate of fluid. An insulated pipe of diameter D is
placed vertically to the direction of a magnetic field with flux density B (see Figure 14.1). When an
electrically conductive fluid flows in the pipe, an electrode voltage E is induced between a pair of
electrodes placed at right angles to the direction of magnetic field. The electrode voltage E is directly
proportional to the average fluid velocity V.
The following expression is applicable to the voltage.
E = induced electrode voltage [V]
E = K × B × D × V [V] ........ (Eq. 14.1)
K = constant
B = magnetic flux density [T]
Volumetric flow rate Q [m3/s] is:
D = meter pipe diameter [m]
V = fluid velocity [m/s]
π × D²
Q =
× V ................(Eq. 14.2)
Using the Equation 14.1 and 14.2
4
E = K × B × D ×
× Q
π × D²
× Q ............(Eq. 14.3)
4 × K × B
E =
π × D
Therefore, volumetric flow rate is directly proportional to the induced voltage.
Square-Wave Excitation
E
V
B
D
Figure 14.1 Principle of Operation
LF516/LF546 lectromagnetic flowmeter uses the square-wave excitation method, which provides
long-term stable operation. With square-wave excitation, LF516/LF546 offers reliable measurement
without being affected by electrostatic or electromagnetic interference, or electrochemical polarization
between the electrodes and the fluid to be measured.
－ 144 －
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15. Specifications
15.1 Flowmeter Specifications
„ Overall Specifications
Measurement range in terms of flow velocity:
0–0.5 m/s to 0–10 m/s
System accuracy: when fluid conductivity is 0.1μS/cm or more
Accuracy
Flow rate as a
percentage of range
Span 0.5 to less than 1m/s
Span 1.0 to 10 m/s
0 to less than 50%
50 to 100%
±0.25%FS
±0.5% of rate
± 0.5%FS
Note: The accuracy above is measured under standard operating conditions at Toshiba's
calibration facility.
Fluid conductivity:
0.01 µS/cm minimum
Measurable fluid velocity:
10
9
Meter size
40-100mm
8
7
Measurable fluid velocity
6
(m/s)
5
Meter size
25mm
4
3
2
1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Fluidconductivity(μS/cm)
1
Fluid temperature:
–10 to +120 °C
Ambient temperature: –10 to +50 °C
Dimensions and Mass: See Chapter 16, “Outline Dimensions.”
－ 145 －
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■LF516 Detector Specifications
Meter size: 25, 40, 50, 80, 100mm
Fluid pressure: -0.1 ~ 2MPa
Connection flange standard: See Table 15.2 Type Specification Code
Heat shock resistance – for ceramic tube detector
Cooling: ΔT ≦100℃/0.5s
Heating: ΔT ≦150℃/0.5s
Note: Meaning that the ceramic tube detector withstands the shock of
sudden cooling (temperature difference 100℃or less per 0.5 seconds)
at the cooling side.
or sudden heating (temperature difference 150℃or less per 0.5 seconds)
at the heating side.
Principle materials
Case – Stainless steel
Lining – Ceramic
Grounding rings – 316 stainless steel (standard)
See Type Specification Code for optional materials and other related information.
Structure: IP68 Watertight
Coating: No coating
－ 146 －
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LF546 Converter Specifications
Input
Input signal:
・Flow rate proportional signal from the detector
・Digital input signal
Signal type:
20 to 30Vdc voltage signal
Input resistance: About 2.7kΩ
Number of input points:
1
Digital input function: Select either of the following.
・ Range switching input: Large/Small range switching of unidirectional double range,
forward/reverse direction double range
・ Counter control input: Internal totalization counter start/stop/reset control
・ Output hold input: The current output and pulse output are kept to their preset
values.
・ Zero adjustment input: Start still water zero adjustment.
Output
Current output:
4 to 20mAdc (load resistance 750Ω or less)
Digital output 1:
Output type:
Capacity:
Transistor open collector
30Vdc, Max 200mA
Number of output points:
1
Digital output 2:
output
Output type:
Semiconductor contact signal
(no polarity)
150Vdc, Max. 150mA
150Vac (peak value), Max.
Capacity:
100mA
Number of output points :
1
－ 147 －
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Digital output function: Select one of the following:
・
Totalization pulse output:
Pulse rate
Max.
3kHz(3000pps) ･･･ DO1
Max. 100Hz( 100pps) ･･･ DO2 (option)
Pulse width
Can be set within a range of 0.3 to 500ms.
However, must be 40% or less of the full-scale cycle.
If the full scale 1000pps is exceeded,
automatically set to 40% of the full-scale cycle.
・ Multi-range switching output: In the case of fourfold range or forward/reverse
double range, you need to add digital output
optionally.
・ High and low alarm output
・ High-high and low-low alarm output
・ Empty alarm output
・ Preset counter output
・ Converter malfunction alarm output
・ Multiple range high and low limit alarm output (option)
Output display: Full-dot matrix 128 x 128-dot LCD (with back light)
Communication signal
Method (protocol): HART or PROFIBUS (option)
Load resistance:
Load capacity:
240 to 750Ω (HART)
0.25μF or less (HART)
Structure
IP67 and NEMA 4X
Housing
Coating
Aluminum alloy
Acrylic resin-baked coating, pearl-gray colored
Cable connection port
1/2-14NPT thread
Cable connections not provided.
Surge arresters
Surge arresters are installed in the power supply and current signal output circuit.
－ 148 －
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6 F 8 A 0 9 3 4
15.2 Model Number Table
Model LF516 Detector Type Specification Code
Model number
Specification code
Contents
1
2
3
4
5
6
6
7
8
9 10 11 12 13 14
L
F
5 1
Capacitance Type electromagnetic flowmeter detector
Area of use
cFMus, Division 2 approved
Meter size
E
F
G
H
J
25mm
40mm
50mm
80mm
100mm
Mounting structure
L
Detector / Converter combined type
(cFMus Approval: Available for FM and CSA)
Connection flange standard
C
D
E
F
ANSI 150
ANSI 300
BS PN 10
BS PN 16
G
H
J
K
L
DIN PN 10
DIN PN 16
JIS 10K
JIS 16K
JIS 20K
A
Standard
Lining material (Note)
Alkali-resistant ceramic tube (alumina)(Standard)
Acid-resistant ceramic tube (alumina)
Grounding Ring Material
316 stainless steel (Standard)
316L stainless steel
A
B
C
D
E
Ti (Titanium)
H
Hastelloy C
Settable flow rate range and calibration flow rate range
0.5m/s to 10m/s (Standard range calibration)
0.5m/s to 10m/s (Specified range calibration)
0.5m/s to 10m/s (Standard range calibration
with specified setting item)
Standard
D
E
F
A
Coating
A
Z
No coating (Standard)
Other
Note: Example of fluids
Alkali fluids: Caustic saoda, ammonia etc.
Acid fluids: Hydrochloric acid, sulfuric acid etc.
－ 149 －
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6 F 8 A 0 9 3 4
Model LF546 Detector Type Specification Code
Model number Specification code
Contents
1
2
3
5
4
4
5
6
7
8
9 10 11 12 13 14
L
F
Capacitance Type electromagnetic flowmeter converter
Area of use
cFMus, Division 2 approved
6
Usage
A
General purpose
Mounting Structure
A
Detector / Converter Combined type
Display
B
LCD display provided
Output
2
Current output 4-20 mA + Status I/O
(One pulse/status output, one status output and one input)
Communication function
1
2
HART protocol
PROFIBUS PA (Note)
Power supply
1
AC100～240V､50/60Hz
Coating
A
Z
Acryl resin-baked coating pearl-gray colored
Other
A A Standard
(Note) When PROFIBUS communication is provided, current output(4-20mA) and HART
communication cannot be used.
－ 150 －
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16. Outline Drawing
Meter size
(mm)
Mass
(kg)
L1(mm)
L2(mm)
φD1(mm)
25
40
80
241
264
280
306
338
66
85
Approx. 4 kg
Approx. 6kg
Approx. 7 kg
Approx. 8 kg
Approx. 10kg
100
110
110
180
50
102
127
159
80
100
－ 151 －
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6 F 8 A 0 9 3 4
Appendix 1
Factory default standard value table
Parameter names
Excitation frequency
Default value(SI unit)
Value(*1)
Default value(US unit)
Value(*1)
Changed value
Flow direction
Display 1
Display 2
Display digit setting
(for Display 1 and Display 2)
Custom coefficient
Custom unit
NORMAL
NORMAL
gal/min
COUNT B
1/1000
m3/h
m3 B
1/1000
1.0
“ CUSTOM”
1.0
“ CUSTOM”
(Head of character string is
blank )
(Head of character string is
blank )
SINGLE
SINGLE
Range type
Range 1
Ranges 2 to 4
Value(*1)
0.00 m3/h
3.0 %
Value(*1)
0.00 gal/min
3.0 %
Hysteresis
Damping constant
Rate-of-change limit
Control limit time
Low cutoff
5.0 s
0.0 %
0.0 s
1.0 %
5.0 s
0.0 %
0.0 s
1.0 %
Display low cutoff
Manual zero
LINEAR
0.0 %
LINEAR
0.0 %
4mA
4mA
4mA
4mA
4−20mADC alarm output
Output low limit setting
Digital output 1
Digital output 2
DO1/DO2 active status
Digital input
DI detective level
Count rate
Pulse width setting mode
Pulse width
Preset count
Preset function
High alarm On/Off
High alarm value
Low alarm On/Off
Low alarm value
High-High alarm On/Off
High-High alarm value
Low-Low alarm On/Off
Low-Low alarm value
Self-diagnosis On/Off
Fixed value output
Fixed value current
Fixed value pulse
Password
NO USE
NO USE
NormOPEN
NO USE
H LEVEL
Value(*1)
AUTO
100 ms
00000000
HOLD
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
ON
NO USE
NO USE
NormOPEN
NO USE
H LEVEL
Value(*1)
AUTO
5 ms
00000000
HOLD
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
ON
OFF
4mA
OFF
4mA
0 pps
000
0 pps
000
LCD density adjustment
Switch position setting
3
3
BOTTOM
BOTTOM
*1 : Setting value by meter size please refer to the next list.
－ 152 －
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6 F 8 A 0 9 3 4
When parameter value was appointed in order, parameter value may be different from list.
Setting value in each size
Range 1 (SI unit)
Range 1 (English unit)
Meter Size
(mm/inch)
Ex. Freq
(Hz)
Count rate
(gal)
(m3/h)
6
(m/s)
3.395
3.316
3.537
3.316
3.537
(gal/min)
75
(ft/s)
31.625
28.826
31.625
26.766
26.354
25 / 1
40 / 1.5
50 / 2
400
200
200
200
100
1
15
175
1
25
300
10
10
10
80 / 3
60
650
100 / 4
100
1000
－ 153 －
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6 F 8 A 0 9 3 4
Appendix 2
System block diagram for LF516/LF546
－ 154 －
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6 F 8 A 0 9 3 4
Write down the address and phone number of the distributor from which you purchased this product,
the product code, SER.NO. and so on.
Distributor
Address
Name
Phone number （
） －
Product code LF
SER.NO.
－ 155 －
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