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ELECTROMAGNETIC FLOWMETER DETECTOR
MODEL LF414
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, could result in death or serious
WARNING
injury.
Indicates a potentially hazardous situation which,
if not avoided, may result in minor to moderate
CAUTION
injuries or in property damage.
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.
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SAFETY PRECAUTIONS
Safety Precautions for Installation and 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.
„ Do not modify or disassemble the enclosure.
Strength degradation and defects of enclosure can cause explosion.
DON’T
DON’T
„ Do not use parts of other products.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Do not touch live circuits until 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
3S8A2532,3S8A2533 (Refer to Appendix 1.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
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SAFETY PRECAUTIONS (continued)
Safety Precautions for Installation and Wiring
CAUTION
„ Install a switch and fuse to isolate the
LF414/LF600F, LF610F and LF414 from
mains power.
„ Use an appropriate device to carry and install
the LF414/LF600F, LF610F and LF414.
Power supply from mains power
can cause electric shock or
circuit break-down.
If this product falls to the ground,
injury, or malfunction of or damage
to the product, can be caused.
DO
DO
„ Turn off mains power before
„ Do not modify or disassemble the
LF414/LF600F, LF610F and LF414
unnecessarily.
conducting wiring work.
Wiring while power is applied
Modifying or disassembling this
product can cause
can cause electric shock.
electric shock, malfunction of or
damage to this product.
DON’T
DO
„ Turn off mains power before working on
„ Ground the LF414/LF600F, LF610Fand LF414
independently from power equipment.
(100 ohm or less ground resistance)
Operating this product
pipes.
Working on pipes while power
is applied can cause
without grounding can cause
electric shock.
electric shock or malfunction.
DO
DO
„ Do not conduct wiring work with bare
Use crimped terminal lugs for the terminal
board and GND terminal.
hands.
Loose connections can cause
electric shock, fire from
excessive current or system
Remaining electric charge
even if power is turned off can
still cause electric shock.
DO
DON’T
malfunction.
„ Do not work on piping and wiring with wet
hands.
Wet hands may result in
electric shock.
DON’T
The label shown left is placed near the terminal board for
power supply on the converter.
(A black border and symbol on yellow triangle)
Be alert to electric shock.
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SAFETY PRECAUTIONS (continued)
Safety Precautions for Maintenance and Inspection
CAUTION
„ Do not conduct wiring work with wet hands.
„ Do not conduct wiring work when power is
applied.
Wet hands may result in
Wiring while power is applied can
cause electric shock.
electric shock.
DON’T
DON’T
„ Do not use a fuse other than the one
„ Do not touch the LF414/LF600F, LF610F and
LF414 main body when high temperature
fluid is being measured.
specified.
Using a fuse other than the one
The fluid raises the main body
specified can cause system
temperature and can cause burns
failure, damage or malfunction.
when touched.
DON’T
DON’T
Use a rated fuse as follows:
Fuse rating:
The label shown left is placed near
the terminal board for power input
of the converter. (A black border and
symbol on yellow triangle)
• 1A/250V for 100 to 240Vac or 110Vdc
• 2A/150V for 24 Vdc
Dimensions: Diameter 5 mm × 20 mm
Melting time characteristic: Medium Acting
(Normal blow)
Be alert to electric shock.
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 the LF600F, LF610F, LF602F and LF612F converter for years of
continuous operation, observe the following precautions.
(1) Do not store or install the flowmeter in:
・Places where there is direct sunlight.
・Places where there is snow and ice
Infrared switches may not function correctly.
・Places where excessive vibration or mechanical shock occurs.
・Places where high temperature or high humidity conditions obtain.
・Places where corrosive atmospheres exist.
・Places submerged under water.
・Places 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 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 apparatus should not be provided with the cable connections.
Please prepare yourself for the cable connections which could be used in Division2
hazardous locations.
The cable lead-in section must be tightened securely to keep air tightness.
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Handling Precautions (continued)
(5) If the inside of the converter and detector's terminal box 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 and detector's terminal box even in the case
of indoor wiring, and complete wiring work in a short period of time.
(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.
(11) For installation and connection of the converter, check the model number of
converter and read the instruction manual of the relevant converter.
* 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.
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Table of Contents
SAFETY PRECAUTIONS ·····················································································2
Handling Precautions ······························································································6
1. Product Inspection and Storage ······································································9
1.1 Product Inspection ·······················································································9
1.2 Storage ········································································································9
2. Overview ·········································································································· 10
3. Names of Parts ································································································· 11
4. Installation ······································································································· 20
4.1 Notes on Selecting the Installation Location ·············································21
4.2 Mounting Procedure····················································································21
4.3 Piping Connections ···················································································25
4.4 Grounding ·································································································28
5. Wiring ·············································································································· 30
5.1 Cables ········································································································ 31
5.2 External Device Connections and Grounding ············································32
5.3 Notes on Wiring ······················································································32
5.4 Wiring ····································································································· 33
6. Operation ········································································································· 36
7. Maintenance and Troubleshooting ································································· 37
7.1 Maintenance ······························································································38
7.2 Troubleshooting ························································································39
8. Principle of Operation ···················································································42
9. Specifications ··································································································43
9.1 Flowmeter Specifications ···········································································43
9.2 Type Specification Code ············································································46
10. Outline Dimensions ·························································································48
Appendix 1 (A system block diagram) ································································· 52
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1. Product Inspection and Storage
1.1 Product Inspection
LF414 series 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.
For the integral type (when a converter and detector are united)
Electromagnetic flowmeter main unit --------------------------------- 1 unit
Instruction manual----------------One each for the converter and detector
Integral
For the separate type (when a converter and detector are separated)
Electromagnetic flowmeter converter---------------------------------- 1 unit
Electromagnetic flowmeter detector ----------------------------------- 1 unit
Instruction manual---------------Once each for the converter and detector
Separate
„ 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 Strage
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 the cover of the converter is left open while being stored, gradual deterioration of circuit
isolation can be caused. Therefore 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
block orstopper, to support it so that the flowmeter will not topple over.
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2. Overview
The LF414/LF600F, LF414/LF610F and LF414 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 a converter used for electromagnetic flowmeters that measure the volumetric flow rate of
conductive fluid using Faraday's law of electromagnetic induction.
You can bring out the functions of the converter when you place it in the converter housing you
prepare and use it in combination with a fluid rate measurement detector.
The converter sends out a signal to drive the detector excitation coil, which generates a magnetic field inside
the detector. The converter receives the signal electromotive force obtained by the detector. The signal
electromotive force is proportional to the generated flow rate in the fluid using Faraday's law of
electromagnetic induction. After carrying out its operation, the converter converts the signal electromotive
force to an analog signal output and displays the status, as a flow rate value.
Features
With a linear relationship between the flow rate and output signal, the electromagnetic flowmeter is
used as an easy-to-read indicator. In addition to this feature, it has the following outstanding features:
(1) Wide flow velocity range setting, such as a flow velocity range of 0~0.1 and 0~10m/s, is achieved.
(2) The unique Noise Sentry filter circuit enables you to obtain stable output automatically.
(3) Full graphic LCD that enables display of a large amount of information
With a large amount of a maximum of 14 characters x 8 lines, you can easily set up various displays
including bar graphs and alarm indications.
The backlight display allows you to read the indicator easily.
(4) Use of infrared switches
Use of infrared switches allows you to perform various operations, without opening the converter
housing cover.
(5) Intelligent functions
The widely used HART protocol communications system is used as a standard feature.
This product supports PROFIBUS*2 communication (optionally available).
* 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 field bus that is approved by
international standard IEC61158. The electromagnetic flowmeter supports PRFIBUS PA for process
automation.
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3. Names of Parts
IMPORTANT
The apparatus should not be provided with the cable connections.
Please prepare yourself for the cable connections which could be used in Division2 hazardos
3.1 Appearance
3.1.1 Appearance of LF414/LF600F, LF414/LF610F
(1) Meter size of 1/2 inch (15mm)
Integral
For the detail of the converter, check the LF600F,
LF610F converter's instruction manual.
Terminal block cover
Ground terminal for converter
Ground terminal for detector
Flow direction arrow
Detector
Grounding ring
Window for electrode
Figure 3.1.1 Appearance of LF414/LF600F, LF610F
Meter size 1/2inch(15mm)
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(2) Meter size of 1inch (25mm)
For the detail of the converter, check the LF600F,
LF610F converter's instruction manual.
Terminal block cover
Ground terminal for converter
Ground terminal for detector
Flow direction arrow
Detector
Grounding ring
Window for electrode
Figure 3.1.2 Appearance of LF414/LF600F, LF610F
Meter size 1 inch(25mm)
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(3) Meter size of 1 1/2 to 4 inch (40 to 100mm)
For the detail of the converter, check the LF600F ,
LF610F converter's instruction manual.
Terminal block cover
Ground terminal
for converter
Flow direction arrow
Ground terminal for detector
Detector
Grounding ring
Figure 3.1.3 Appearance of LF414/LF600F, LF610F
Meter size 1 1/2 to 4 inch (40 to 100mm)
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(4) Meter size of 6 and 8 inch (150 and 200mm)
For the detail of the converter, check the LF600F,
LF610F converter's instruction manual.
Terminal block cover
Lifting Lugs
*Only 8 inch (200mm)
provided.
Flow direction arrow
Ground terminal
for converter
Ground terminal for detector
Grounding ring
Detector
Figure 3.1.1 Appearance of LF414/LF600F, LF610F
Meter size 6 and 8 inch(150 and 200mm)
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3.1.2 Appearance of LF414
(1) Meter size of 1/2 inch (15mm)
Separate
Excitation cable
3/4 - 14 NPT
Terminal Box Cover
Signal cable
3/4 - 14 NPT
Terminal Box
Flow direction arrow
Detector
Ground terminal for detector
Grounding ring
Window for electrode
Figure 3.1.2 Appearance of LF414
Meter size 1/2inch(15mm)
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６Ｆ８Ａ０８７０
(2) Meter size of 1inch (25mm)
for Excitation cable
3/4 - 14 NPT
for Signal cable
3/4 - 14 NPT
Terminal Box Cover
Terminal Box
Flow direction arrow
Detector
Ground terminal for detector
Grounding ring
Window for electrode
Figure 3.1.2 Appearance of LF414
Meter size 1 inch(25mm)
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(3) Meter size of 1 1/2 to 4 inch (40 to 100mm)
Excitation cable
3/4 - 14 NPT
Signal cable
3/4 - 14 NPT
Terminal Box Cover
Terminal Box
Flow direction arrow
Detector
Ground terminal for detector
Grounding ring
Figure 3.1.3 Appearance of LF414
Meter size 1 1/2 to 4 inch (40 to 100mm)
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６Ｆ８Ａ０８７０
(4) Meter size of 6 and 8 inch (150 and 200mm)
Excitation cable
3/4 - 14 NPT
Signal cable
3/4 - 14 NPT
Terminal Box Cover
Terminal Box
Lifting lugs
*Only 8 inch (200mm)
provided.
Flow direction arrow
Ground terminal for detector
Grounding ring
Detector
Figure 3.1.4 Appearance of LF414
Meter size 6 and 8 inch(150 and 200mm)
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3.2 Construction of the terminal blocks
3.2.1 Terminal Block Construction of LF414/LF600F, LF414/LF610F Type
For details of the converter, check the LF600F, LF610Fconverter's instruction manual.
Integral
3.2.2 Terminal Block Construction of LF414 Type
Separate
Signal cable terminal
Excitation cable terminal
Figure 3.2.2 Terminal Block of LF414
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4. Installation
Safety Precautions for Installation
WARNING
„ Do not live active 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 active 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
3S8A2532,3S8A2533 (Refer to Appendix 1.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
CAUTION
„ Ground the LF414/LF600F, LF610F and
LF414 independently from power
equipment. (100 ohm or less ground
resistance)
„ Use an appropriate device to carry and install
the LF414/LF600F, LF610F and LF414 .
If his product falls to the ground,
injury, or malfunction of or damage to
the product, can be caused.
Operating this product without
grounding can cause electric
shock or malfunction.
DO
DO
„ Install a switch and fuse to isolate the
LF414/LF600F, LF610F and LF414 from
mains power.
„ Do not modify or disassemble the
LF414/LF600F, LF610F and LF414
unnecessarily.
Power supply from mains power
can cause electric shock or
Modifying or disassembling this product
can cause electric shock, malfunction
circuit break-down.
or damage to this product.
DO
DON’T
„ Do not work on piping and wiring with wet
The label shown left is placed
near the terminal board for power
supply to the converter.
hands.
Wet hands may result in electric
shock
Be alert to electric shock
DON’T
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4.1 Notes on Selecting the Installation Location
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 is pumped in a pulsating manner.
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 occur.
6. Avoid places where there may be limited access such as pipes installed next to high ceilings 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 flowing or 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.
10. The maximum length of the cable that connects the detector and converter is 300m. Select the
converter installation location so that the distance between the detector and converter does not exceed
300m.
Separate
4.2 Mounting Procedure
4.2.1 Pipe checks
(1)Before installing pipes, check for any leaning, misplacement or eccentricity as illustrated in Figure 4.1.
An attempt to unreasonably connect pipes that are inclined may lead to a detector breakdown or fluid
leakage. Connecting pipes in an eccentric state may also cause wear and tear of linings and grounding
rings, as well as measurement errors.
Before installing pipes, make sure to flush the interior of the pipes to remove deposited material..
Eccentricity
Inclination
(a) Pipe leaning
(b) Pipe axis misplacement (or eccentricity)
Figure 4.1 Pipe leaning and axis misplacement
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(2) Preventing an Empty Pipe Condition
Fix the relevant pipes installed on both sides of the detector by attaching 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
－ ２２ －
６Ｆ８Ａ０８７０
4.2.2 Installation Procedure
To mount the LF414, 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 LF414 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 60 °C. If the
ambient temperature goes above 60° C, try to lower the temperature by measures such as wrapping
heat-insulating materials over the detector pipe and adjoining pipes.
Figure 4.4 LF414 flowmeter detector piping connections
－ ２３ －
６Ｆ８Ａ０８７０
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
375
460
15mm 1/2”
25mm 1”
40mm 11/2”
50mm 2”
80mm 3”
100mm 4”
150mm 6”
200mm 8”
4
4
4
4
4
8
8
8
1/2”
1/2”
1/2”
5/8”
5/8”
5/8”
3/4”
3/4”
150
170
195
215
225
235
355
430
4
4
1/2”
5/8”
3/4”
5/8”
3/4”
3/4”
3/4”
7/8”
25 to 31
53 to 66
12 to 15
21 to 26
32 to 40
52 to 65
71 to 88
52 to 65
104 to 130
146 to 183
4
96 to 120
52 to 65
8
8
85 to 106
125 to 156
138 to 173
227 to 284
8
12
12
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
340
15mm
25mm
40mm
50mm
80mm
100mm
150mm
4
4
4
4
8
8
8
M12
M12
M16
M16
M16
M16
M20
150
165
190
205
210
220
340
16 to 19
27 to 34
58 to 72
78 to 98
54 to 67
79 to 99
164 to 205
4
4
4
4
8
8
8
M12
M16
M16
M16
M16
M16
M20
10 to 13
22 to 28
32 to 40
43 to 53
27 to 34
37 to 46
70 to 88
(DIN/BS 10)
200mm
12
M20
410
60 to 75
8
M20
410
146 to 183
156 to 195
200mm
(DIN/BS 16)
12
M20
410
－ ２４ －
６Ｆ８Ａ０８７０
4.3 Piping Connections
(1a) Ideal Upstream Straight Pipe Length Installation Requirements
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
(1b) Optional “Mount Anywhere” Installation
Mount-Anywhere Technology:
With Toshiba’s unique, patented magnetic field distribution technology, the meter is
highly immune to upstream flow disturbances. A minimum of 1D (diameter) length of
upstream straight pipe from the flange is required to maintain the performance
specification.
NOTE
The test results were obtained and demonstrated at Toshiba’s flow calibration facility,
Fuchu Japan.
－ ２５ －
６Ｆ８Ａ０８７０
(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. If no air bubble, vertical down flow application are acceptable under
pressured piping conditions. 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 relative to the ground surface in any piping
installation. See Figure 4.6.
Electrodes
A
A'
Cross-section A - A'
Detector
Ground surface
Figure 4.6 Installation position of the detector
－ ２６ －
６Ｆ８Ａ０８７０
(3) Flow Direction
Install the detector in accordance with the flow direction arrow on the detector. See Figure 4.7.
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.
Vertical 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
－ ２７ －
６Ｆ８Ａ０８７０
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
(1) Grounding of the LF414/LF600F, LF414/LF610F type
Integral
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
Example: Resin or metal piping whose
inside is resin-lined, etc.
Conductive material pipe
Example: Metal, etc.
Grounding terminal
Grounding wire
grounding resistance
100Ωor less
• 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 LF414/LF600F, LF414/LF610F Type
－ ２８ －
６Ｆ８Ａ０８７０
(2) Grounding of the LF414 type
Separate
Ground the external grounding terminal of the detector and the FG terminal of the converter (or
external grounding terminal of the converter) securely (grounding resistance 100Ω or lower).
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.)
If it is difficult to perform grounding work at the detector side because of a pit installation or other
reasons, use a 3-core cable for the excitation cable and connect the E terminal of the detector to
the E terminal of the converter. (The E terminal of the converter is internally connected with the
FG terminal and the converter case.)
A
B
G
E
X
Y
A
B
G
E
X
Y
Converter
terminal
block
Converter
terminal
block
FG
FG
Shield twisted
Shield twisted
Grounding terminal
Grounding terminal
(100 ohm or less
ground resistance)
(100 ohm or less
ground resistance)
Input signal
cable
Input signal
cable
Excitation cable
Excitation cable
Shield twisted
Shield twisted
Grounding terminal
Grounding terminal
Converter
terminal
block
G
E
Converter
terminal
block
G
E
A B
X
Y
A B
X
Y
(100 ohm or less
ground resistance)
Figure 4.11 (a)
Figure 4.11 (b)
Wiring between Detector and Converter (For
grounding the detector, see Figure 4.12 below.)
Wiring between Detector and Converter
(when grounidng of the detector is difficut)
Conductive material piping
Example: Metal, etc.
Non-conductive material piping
Example: Resin product or metal piping whose inside is resin lined
Grounding terminal
Grounding terminal
Grounding wire
Grounding
wire
(100 ohm or less ground resistance)
•
If the piping material is conductive, connect the
grounding wires to the both ends of the piping flange.
•
If the piping material is non-conductive, perform grounding
resistance 100Ω or less.
Figure 4.12 Grounding the LF414 Type Detector
－ ２９ －
６Ｆ８Ａ０８７０
5.Wiring
Safety Precautions for 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 active 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
3S8A2532,3S8A2533 (Refer to Appendix 1.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
－ ３０ －
６Ｆ８Ａ０８７０
CAUTION
„ Turn off mains power before conducting wiring
„ Install a switch and fuse to isolate the
LF414/LF600F, LF610F and LF414 from
work.
mains power.
Power supply from mains power can
cause electric shock or circuit
Wiring while power is applied can cause
electric shock.
break-down.
DO
DO
„ Do not work on piping and wiring with wet
„ Ground the LF600F, LF610 independently from
power equipment. (100 ohm or less ground
resistance)
hands.
Wet hands may result in electric
Operating this product without grounding
can cause electric shock or malfunction.
DO
shock
DON’T
„ Do not conduct wiring work with bare hands. „ For the power supply wiring and grounding wiring,
use crimping terminals with insulated sleeve.
Remaining electric charge even if
power is turned off can still cause
electric shock.
There is a risk of electric shock due to
drop-off or loosing, and a risk of fire and
equipment trouble due to heat generation.
DON’T
DO
Do not modify or disassemble the LF600F,
LF610F, LF602F and LF612F
The label shown left is placed near the
power supply terminal on the
converter.
unnecessarily.
Modifying or disassembling this
product can cause electric shock,
malfunction of or damage to this
Be alert to electric shock.
DON’T
product.
Flowmeter accuracy may be affected by the way wiring is executed. Proceed with correct wiring taking
the precautions in following pages.
－ ３１ －
６Ｆ８Ａ０８７０
Notes on wiring
CAUTION
(1) Select the cable runs 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 an arrestor 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) Because the excitation cable and flow rate signal cable transmit very delicate signals, pass each of
them separately through a thick steel conduit tube, keep them away from the large current wiring as
far as possible, and do not install them in parallel.
Separate
5.1 Cables
Use the kind of cables shown in Table 5.1 to wire the converter.
Table 5.1 Installation Cables
Nominal
cross-section
al area
Finished
outer
diameter
Name
Cable name
Description
3-core vinyl sheathed cable or 2-core vinyl
sheathed cable
CVV JIS C 3401 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.
Output
CVV-S JIS -258-C or
signal cable Use a shielded cable of finished outer diameter 11 to 13mm and equivalent
nominal cross-sectional area 1.25mm2.
Flow rate
signal cable
2PNCT-S
JIS C 3327 or
equivalent
2-core shielded chloroprene cabtyre cable
( Rubber covered cable )
0.75 mm2
11~13mm
11~13mm
Separate
Separate
Excitation
cable
2PNCT
JIS C 3327 or
equivalent
3-core chloroprene cabtyre cable
( Rubber covered cable )
2 mm2
1.25 m2
－ ３２ －
６Ｆ８Ａ０８７０
5.2 External Device Connections and Grounding
For the notes on connecting, wiring and installation of the combined converter, check the model number of
the combined converter and read the instruction manual of the relevant converter.
5.3 Notes on Wiring
5.3.1 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.
5.3.2 Notes on Wiring of the Separate type (LF414)
Separate
•
The detector is shipped with a flow rate signal cable and excitation cable. Be sure to use those cables
coming with the detector.
Note: When the cable length exceeds 300m, cables may not be supplied. Check whether the
cable is supplied with the specs.
•
The allowable cable length between the detector and converter varies depending on the conductivity of the
operating fluid. Refer to the instruction manual of the combined detector.
When connecting with the detector, wire the cables in the order of the excitation cable and flow rate signal
cable.
Because the input cables transmit very delicate signals, pass the excitation cable and input signal cable
separately through a thick steel conduit tube, keep them away from the large current wiring as far
as possible, and do not install them in parallel.
•
•
•
When replacing the flow rate signal cable and excitation cable, also refer to the instruction manual of the
relevant detector. Order the detector terminal box cover packing from Toshiba.
－ ３３ －
６Ｆ８Ａ０８７０
5.4 Wiring
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, 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 5.1 and attach a crimping terminal with insulated sleeve to it. The size of
the crimping terminal is as follows:
Integral type LF600F, LF610F: M4
Separate type LF602F, LF612F: M3.5
• 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.
LF600F, LF610F type: M4
LF602F, LF612F type: M3.5
Crimping terminal
25~45mm
Figure 5.1 Terminal Treatment of Power Cable, Current Output Cable
and Digital I/O cable
(2) Excitation cable
Separate Strip the sheath from the end of each conductor as shown in Figure 5.2, attach an M3.5 crimping terminal
with insulated sleeve, and connect it to the terminal blocks X and Y. Connect the red conductor to terminal
block E.
M3.5 crimping terminal
X Black
E Red
Y White
25~45mm
Figure 5.2 Terminal Treatment of Excitation Cable
－ ３４ －
６Ｆ８Ａ０８７０
(3) Connecting the input signal cable
Separate
Strip the sheath from the end of each conductor of a 2-core individually shielded cable as shown in Figure
5.4. Twist those shields and cover them with a thermal contraction tube or vinyl tube not to make contact
with the case or core wires. Then attach an M3.5 crimping terminal with insulated sleeve as shown in Figure
5.3. Connect a crimping terminal to the A and B terminals on the terminal block and connect to each G
terminal of the detector and converter.
M3.5 crimping terminal
Thermal contraction tube or vinyl tube
A Black
G Shield
B White
25~45mm
Figure 5.3 Terminal Treatment of Flow Rate Signal Cable
● Notes on signal cable shield processing work
When stripping an external sheath, intermediate and insulated sheath, be careful not to scratch or cut the
internal conductors and shield mesh. Do not disjoint the shield mesh but treat it as shown in Figure 5.9.
a. Open the shield mesh with a pencil or the like.
Coated wire
b. Pull out the internal coated wires from the hole of the
shielded mesh.
Shield mesh
c. Pull out all internal coated wires and extend the shield mesh
wire.
Figure 5.4 Treating the Signal Cable Shield Mesh
－ ３５ －
６Ｆ８Ａ０８７０
5.4.2 Cable Connection
Connect and install the terminal-treated cables to the terminal block.
*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 combined converter's manuals of "Connections and Grounding", connect each cable to the
terminal block. Tighten the screws of the terminal block tightly to ensure a 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 5.5 Connecting a Cable to Terminal Block
－ ３６ －
６Ｆ８Ａ０８７０
6. Operation
CAUTION
„ Do not touch the terminal board when
power is supplied.
Touching the terminal board
„ Do not touch the main body when high
temperature fluid is being measured.
The fluid raises the main body
temperature and can cause burns.
DON’T
when power is supplied can
cause electric shock.
DON’T
Preparatory check
Follow the procedure described below to prepare before starting the flow measurement (described with
regard to the entire flowmeter).
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 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 combined converter's manual.
Zero Adjustment
„ Wait for 30 minutes to warm up the flowmeter. Then making sure the fluid holds still in the
detector pipe, starts the zero adjustment. Refer to combined converter's manual.
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.
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.
－ ３７ －
６Ｆ８Ａ０８７０
7. Maintenance and Troubleshooting
Safety precaution for 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
3S8A2532,3S8A2533 (Refer to Appendix 1.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
CAUTION
„ Do not conduct wiring work when
„ Do not touch the LF414/LF600F, LF610F
and LF414 main body when high
power is applied.
temperature fluid is being measured.
Wiring while power is applied
The fluid raises the main body
can cause electric shock.
temperature and can cause burns.
DON’T
DON’T
－ ３８ －
６Ｆ８Ａ０８７０
7.1 Maintenance
„ Cleaning
„ Adhesion might be created in the detectore over a long period of time when used on certain
materials.
Try to confirm whether to cause the adhesion in the detector pipe when the phenomenon is seen, and and an
abnormality (ex. decreasing indication, etc.) is confirmed.
Please clean with a soft brush etc. and remove any unnecessary build up inside the meter. When using it in the
line to which such a phenomenon occurs easily, it is recommended that the detector pipe be cleaned regularly.
Use new gaskets when reinstalling the flowmeter detector in the pipeline.
„ Mag-Prover Built-In Calibrator
The converter LF60*F and LF61*F has a built-in reference signal calibration and verification circuit that allows you
to re-verify the original magmeter flow lab calibration without the need for external devices. This reference signal
can be used to check the zero and span of the converter for the purpose of instrumentation maintenance
or periodical inspection. Refer to combined converter's manual.
„ 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.
„ Product disposal
The electromagnetic flowmeter 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.
„ 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.
Integral
Type of fuse used:
Rating:
Glass tube fuse , Medium Acting type (normal blow) 1 piece
1A/250 V for 100 to 240 Vac and 110Vdc power supply
2A/150V for 24Vdc power supply
Dimensions:
Diameter 5 mm × 20 mm
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
Integral
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.
Integral
Contact your nearest Toshiba representative for a flowmeter inspection or unit replacement.
－ ３９ －
６Ｆ８Ａ０８７０
7.2 Troubleshooting
If a problem occurs while using the LF414/LF600F, LF414/LF610F and LF414, follow the flowcharts
described below.
You may find a way to solve the problem. The flowcharts are based on three symptoms (1) to (3).
If you cannot solve the problem, contact your nearest Toshiba representative.
7.2.1 Flow rate is not indicated
START
NO
Use the correct power supply for each
device.
Are power supplies correct
for each device?
YES
Install the cables correctly.
Refer to Chapter 5, “Wiring.”
Are power and I/O cables
installed correctly?
NO
YES
YES
Replace the fuse with a new one.
Is the fuse burnt?
NO
Set correctly.
Refer to combined converter's manual.
NO
NO
Is the flow range correctly set?
YES
Is the flow direction match
with the arrow mark on the
detector?
Install the detector correctly.
Refer to Chapter 4, “Installation”
YES
Contact your nearest Toshiba
representative.
－ ４０ －
６Ｆ８Ａ０８７０
7.2.2 Flow rate indicated is not correct
START
NO
Set correctly.
Refer to combined converter's manual.
Is the flow range correctly
set?
YES
Perform the zero adjustment.
NO
Is zero point correctly set?
Refer to combined converter's manual.
YES
Is the excitation current
NO
Set correctly.
Refer to combined converter's manual.
value as stated on the
flow direction tag?
YES
Is the inside wall of detector
pipe contaminated?
YES
NO
Clean the inside of the detector pipe.
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
resistors connected to
the output in parallel?
YES
Connect the two load resistors in
series, if necessary.
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.
－ ４１ －
６Ｆ８Ａ０８７０
7.2.3 Flow rate indication is not stable
START
Is power supply voltage
within the specified range?
NO
NO
NO
Use a power supply within the
specified range.
YES
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.
Is the flowmeter grounded
with 100Ωor less ground
resistance?
(100Ωor less ground resistance)
YES
Design piping so that the detector
pipe is filled with fluid all the time.
NO
Is the detector pipe filled
with fluid?
YES
Design piping so that the fluid does
not carry bubbles.
YES
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.
YES
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.
－ ４２ －
６Ｆ８Ａ０８７０
8. 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]
D = meter pipe diameter [m]
Volumetric flow rate Q [m3/s] is:
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
Figure 8.1 Principle of Operation
The LF414/LF600F, LF414/LF610F and LF414 uses the square-wave excitation method, which provides
long-term stable operation. With square-wave excitation, the LF414/LF600F, LF414/LF610F and LF414 offers
reliable measurement without being affected by electrostatic or electromagnetic interference, or electrochemical
polarization between the electrodes and the fluid to be measured.
－ ４３ －
６Ｆ８Ａ０８７０
9. Specifications
The flowmeter specifications and the type specification code used when ordering the flowmeter
are described in this chapter.
9.1Specifications
Meter size:
1/2, 1, 1 1/2, 2, 3, 4, 6, 8 inch
(15, 25, 40, 50, 80, 100, 150, 200mm)
Measurement range in terms of flow velocity:
0 – 1.0 ft/s to 0 – 32.8 ft/s ( 0 – 0.3 m/s to 0 – 10 m/s).
0 – 0.3 ft/s to 0 – 1.0 ft/s (0 – 0.1 m/s to 0 – 0.3 m/s) range is available optionally.
System accuracy combined with TOSHIBA converter:
Accuracy: ±0.2 % of Rate*
* This pulse output error result is established under standard operating conditions at Toshiba's flow calibration facility,
Fuchu Japan. (NIST Traceable).
* Individual meter measurement error may vary up to ±0.5% of Rate at 1.64 ft/s (0.5m/s) or more and ±0.3% of rate
±0.039 inch/s (1mm/s) at 1.64 ft/s (0.5m/s)or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual meter's measurement error.
Fluid conductivity:
Fluid temperature:
5 µS/cm minimum
14 to 356 °F (–10 to +180 °C) (Ceramic Tube detector)
(248 °F (120 °C) above is separate type)
14 to 248 °F (–10 to +120 °C) (Teflon PFA Lining detector)
Ambient temperature: –4 to 140°F (–20 to +60 °C)
Fluid pressure:
–15 to 300psi, or –1.0 to 20 bar (– 0.1 to 2.0MPa)
Heat shock resistance: for ceramic tube detector
Heating: ΔT ≦ 150 °C/0.5 s (Note)
Cooling: ΔT ≦ 100 °C/0.5 s (Note)
Note: Meaning that the ceramic tube detector withstands the shock of
sudden heating (temperature difference 150 °C or less per 0.5 seconds)
or sudden cooling (temperaturedifference 100 °C or less per 0.5 seconds).
Connection flange standard: See Table 9.2 Type Specification Code.
Principal materials
Case・・・・・・ Stainless steel : meter sizes 1” to 4” (25 to 100 mm)
Carbon steel : meter size 1/2”, 6” and 8” (15 mm,150mm, and 200mm)
Lining・・・・・ Ceramic : standard for meter sizes 1/2” to 4” (15 to 100 mm)
Teflon PFA : standard for meter sizes 6” and 8” (150 mm,200mm)
Electrodes・・・・ 316L stainless steel (standard)
Grounding rings・・316 stainless steel (standard)
See Table 9.2 Type Specification Code for optional materials and other related information.
－ ４４ －
６Ｆ８Ａ０８７０
Coating: No coating (for meter sizes 25 to 100 mm),
Phthalic acid resin coating, pearl-gray colored (standard for meter size 15,150, 200mm)
Structure: IP67 and NEMA 4X Watertight ( Standard )
Cable connection port: 3/4-14NPT male screw for both signal cable and exciting cable
Cable length: Allowable cable length between the converter and the detector varies with the electrical
conductivity of fluid. See Figure 9.1
Separate
300
200
100
ケー
50
ブル
30
20
許
容
長
さ
10
5
3
3
5
10 20 30 50 100 200
Electrical conductivity (μS/cm)
Figure 9.1 Electrical Conductivity vs. Cable Length
－ ４５ －
６Ｆ８Ａ０８７０
Flow and calibration velocity range:
It calibration by standard Range shown in the table below when Range is not specified.
It calibration when there is specification by flowing quantity Range in which the customer is
specified. Is this specification Range flowing quantity of Figure 9.1. Please confirm becoming
in the upper bound value from the flow velocity chart.
Meter size
(mm)
15
Standard Flow rate
Volume (m3/h)
Velocity (m/s)
2
6
3.144
3.395
3.316
3.537
3.316
3.537
3.144
2.653
25
40
50
80
100
150
200
15
25
60
100
200
300
To select the meter size: See Figure 9.2 and find meter sizes within the velocity of 0.1 to 10 m/s for a specified
full-scale (measuring range high limit) flow. Select one that has its full-scale velocity
between 1 and 3 m/s.
Make sure the full-scale flow rate used for the final planning stage stays
within 10 m/s in terms of flow velocity.
100
10
15 25 40 50 80 150 200 mm
1
0.3
0.1
10-2
10-1
1
101
102
103
104
3
Flow volume (m /h)
Figure 9.2 Flow velocity vs. flow volume
SI Unit
Flow velocity range
Flow volume
Meter size
15mm
0.1m/s
0.3m/s
1m/s
10m/s
0.0631m3/h
0.1767m3/h
0.4523m3/h
0.7067m3/h
1.809m3/h
2.827m3/h
6.361m3/h
11.31m3/h
0.1908m3/h
0.5301m3/h
1.357m3/h
2.120m3/h
5.428m3/h
8.482m3/h
19.08m3/h
33.93m3/h
0.6361m3/h
1.767m3/h
4.523m3/h
7.067m3/h
18.09m3/h
28.27m3/h
63.61m3/h
113.1m3/h
6.361m3/h
17.67m3/h
45.23m3/h
70.67m3/h
180.9m3/h
282.7m3/h
636.1m3/h
1131m3/h
25mm
40mm
50mm
80mm
100mm
150mm
200mm
－ ４６ －
６Ｆ８Ａ０８７０
US Unit
Flow volume
Meter size
Flow velocity range
3ft/s
0.328ft/s
0.98ft/s
10ft/s
32.8ft/s
1/2 inch
0.2801 gal/min 0.8403 gal/min
2.561 gal/min
7.115 gal/min
18.21 gal/min
28.46 gal/min
72.85 gal/min
113.8 gal/min
256.1 gal/min
455.3 gal/min
8.538 gal/min
23.72 gal/min
60.71 gal/min
94.86 gal/min
242.8 gal/min
379.4 gal/min
853.8 gal/min
1,518 gal/min
28.01 gal/min
77.81 gal/min
199.2 gal/min
311.2 gal/min
796.7 gal/min
1,245 gal/min
2,801 gal/min
4,980 gal/min
1 inch
1 1/2 inch
2 inch
0.7781 gal/min
1.992 gal/min
3.112 gal/min
7.967 gal/min
12.45 gal/min
28.01 gal/min
49.80 gal/min
2.334 gal/min
5.975 gal/min
9.337 gal/min
23.90 gal/min
37.35 gal/min
84.03 gal/min
149.4 gal/min
3 inch
4 inch
6 inch
8 inch
－ ４７ －
６Ｆ８Ａ０８７０
9.2 Type Specification Code
Table 9.2 Type Specification Code
Specification Code
15mm 150mm
Description
to
and
1
2
3
4
4
5
6
7
8
9
10 11 12 13 14
100mm 200mm
L
F
Electromagnetic Flowmeter
Style
1
Wafer type
Area of use
Division 2 Hazardous Location
Meter size
４
D
E
F
G
H
J
K
L
15mm ( 1/2" )
25mm ( 1" )
40mm ( 1 1/2" )
50mm ( 2" )
80mm ( 3" )
100mm ( 4" )
150mm ( 6" )
200mm ( 8" )
Mounting Structure
Hazardous location
cFMus, Division 2 approved
Detector/Converter combined type
Detector/Converter separate type
Connection flange standard
ANSI 150
A
B
C
D
E
F
G
H
J
K
L
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
ANSI 300
BS PN 10
BS PN 16
DIN PN 10
DIN PN 16
JIS 10K
JIS 16K
JIS 20K
Electrode Material
316L stainless steel
Ti (titanium)
B
C
D
E
F
○
△
△
△
△
△
△
△
△
○
Pt-Ir (platinum/iridium)
Ta (tantalum)
Hastelloy C
Lining Material
A
B
C
○
○
△
―
―
○
Alkali-resistant ceramic (alumina)
Acid-resistant ceramic (alumina)
Teflon PFA
(standard)
Grounding Ring Material
316 stainless steel
316L stainless steel
Ti (titanium)
C
D
E
F
G
H
○
△
△
△
△
△
○
△
△
△
△
△
Ta (tantalum)
Pt-Ir (platinum/iridium)
Hastelloy C
Flow and calibration velocity range
A
B
C
0.3 to 10 m/s (standard range calibration)
0.3 to 10 m/s (specified range calibration)
0.1 to 10 m/s (specified range calibration)
Excitation and Signal Cables
○
△
△
○
△
△
A
B
C
not provided
○
△
△
○
△
△
30m cable, provided
other lengths, provided
Coating
A
B
no coating ( Standard for meter size 25mm to 100mm )
phthalic acid resin coating pearl-gray colored
( Standard for meter size 15mm, 150mm and 200mm )
black tar epoxy resin, thickness 0.3 mm
black tar epoxy resin, thickness 0.5 mm
○
△
―
○
C
D
△
△
△
△
○：Standard
△：Option
－：Not available
－ ４８ －
６Ｆ８Ａ０８７０
Table 9.3 Type Specification Code (Exciting Cable and Signal Cable)
Model Specification Code
Description
1
2
3
4
5
6
7
8
A C C
Dedicated preformed cable
Nominal cross-sectional area of Exciting cable (Note 1)
A
B
1.25 mm²
2 mm²
Nominal cross-sectional area of Signal cable (Note 2)
A
0.75 mm²
Cable length
1 m
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
2
3
3
4
4
5
6
1
2
3
4
5
6
7
8
9
0
5
0
5
0
5
0
5
0
0
2 m
3 m
4 m
5 m
6 m
7 m
8 m
9 m
10 m
15 m
20 m
25 m
30 m
35 m
40 m
45 m
50 m
60 m
From 1 to 10 meters (3.3 to 32.8 feet),
Cable can be ordered in 1 meter increments.
From 10 to 50 meters (32.8 to 164 feet),
cable can be ordered in 5 meters increments.
From 50 to 300 meters (164 to 984 feet),
cable can be ordered in 10 meters increments.
3
0
0
300 m
Notes:
1. Exciting cable is a 3-wire chloroprene sheathed cable. For a nominal cross-
sectional area of 1.25 mm², the overall diameter will be 12 mm (15/32 inch):
for 2 mm², 13 mm(1/2 inch).
2. Signal cable is a 2-wire shielded chloroprene sheathed cable with a nominal
cross-sectional area of 0.75 mm² and an overall diameter of 12 mm (15/32 inch).
3. Relation between exciting cable length and its nominal cross-sectional area and
overall diameter is as follows.
Exciting cable length Nominal cross-sectional area Overall diameter
1 to 200 m
1.25 mm²
2 mm²
12 mm
13 mm
210 to 300 m
－ ４９ －
６Ｆ８Ａ０８７０
10. Outline Dimensions
10.1 Outline dimensions of LF414/LF600F, LF414/LF610F
(1) Meter size of 1/2 inch (15mm)
Integral
225
143
64
70
Waight : approx 5kg
(2) Meter size of 1inch (25mm)
225
143
80
87
Waight : approx 5kg
－ ５０ －
６Ｆ８Ａ０８７０
(3) Meter size of 1 1/2 to 8 inch (40 to 200mm)
225
143
L1
Meter size
(mm)
Diamete of
flange
Weight
(kg)
Overall lengeth
L1
Hight
(L2)
D1
φ
40
50
80
100
150
200
100
110
110
120
230
300
264
280
306
338
407
458
85
approx 6
approx 7
approx 8
approx 10
approx 22
approx 32
102
127
159
216
267
－ ５１ －
６Ｆ８Ａ０８７０
10.2 Outline dimensions of LF414
(1) Meter size of 1/2 inch (15mm)
Separate
Waight : approx 3kg
(2) Meter size of 1inch (25mm)
Waight : approx 3kg
－ ５２ －
６Ｆ８Ａ０８７０
(3) Meter size of 1 1/2 to 8 inch (40 to 200mm)
Meter size
(mm)
Diamete of
flange
Weight
(kg)
Overall lengeth
L1
Hight
(L2)
D1
φ
190
207
232
264
334
385
40
50
80
100
150
200
100
110
110
120
230
300
85
approx 5
approx 6
approx 7
approx 9
approx 22
approx 36
102
127
159
216
267
－ ５３ －
６Ｆ８Ａ０８７０
Appendix 1
1-1 A system block diagram for LF414/LF600F, LF414/LF610F
－ ５４ －
６Ｆ８Ａ０８７０
2-1 A system block diagram for LF414
－ ５５ －
６Ｆ８Ａ０８７０
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
SER.NO.
LF
－ ５６ －
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