Toshiba Lf414 User Manual

6F8A0870  
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.  
6F8A0870  
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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6F8A0870  
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.  
DONT  
DONT  
Do not use parts of other products.  
Protective performance degradation for hazardous location can cause explosion.  
DONT  
Do not touch live circuits until assembly of all components is not over.  
Protective performance degradation for hazardous location can cause explosion.  
DONT  
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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6F8A0870  
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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6F8A0870  
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 100or 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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6F8A0870  
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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6F8A0870  
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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6F8A0870  
2. Overview  
The LF414/LF600F, LF414/LF610F and LF414 electromagnetic flowmeter can be use in the  
following hazardous (classified) locations.  
Class, Division 2, Groups A, B, C and D,  
Class, 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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6F8A0870  
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  
i
l
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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6F8A0870  
(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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6F8A0870  
(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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6F8A0870  
(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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6F8A0870  
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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6F8A0870  
(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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6F8A0870  
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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6F8A0870  
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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6F8A0870  
(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  
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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  
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6F8A0870  
Table 4.1 Bolt length and Nut tightening torque  
ANSI class 150  
Through Bolts  
ANSI class 300  
Through Bolts  
Tightening  
torque  
[Nm]  
Tightening  
torque  
[Nm]  
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  
[Nm]  
Tightening  
torque  
[Nm]  
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  
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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.  
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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  
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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  
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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  
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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 100or less.  
Figure 4.12 Grounding the LF414 Type Detector  
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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)  
4
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  
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  
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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