Toshiba LF414 User Manual

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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.

ELECTROMAGNETIC FLOWMETER DETECTOR

MODEL LF414

INSTRUCTION MANUAL

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NOTICE

We thank you very much for your purchase of our LF414 series electromagnetic flowmeter detector.

Integral type LF414/LF600F, LF414/LF610F
Separate type detector LF414

This instruction manual describes the notes on using an electromagnetic flowmeter detector,
installation, configuration and maintenance. It is intended for the personnel in charge of installation,
operation and maintenance.
To use this product properly and safely, read this manual (6F8A0870) carefully before using this

product. After reading this manual, store it in a place where it can be referred to whenever needed.
This manual uses the following markers to identify the integral type or separate type when it describes
items specific to the integrated type or separate type. Items without this marker are common items to the
integral type and separate type.

Integral type LF414/LF600F, LF414/LF610F:

Integral

Separate type detector LF414:

Toshiba LF414 electromagnetic flowmeter detectors can be used in combination with various types of
electromagnetic flowmeter converters (LF600F, LF610F, LF602F and LF612F).

For the notes on usage, connecting, wiring, installation, configuration and maintenance of the
combined converter, check the model number of the combined converter and read the instruction

manual of the relevant converter.

About Safety Precautions
Read the Safety Precautions described at the front carefully and understand the contents

before using this product.
The “Safely symbols” used in the “Safety Precautions” are shown in a location such as

in the margin to the left of the corresponding commentary in the main text.

Separate

NOTES

1. The reproduction of the contents of this Manual in any form, whether wholly or in

part, is not permitted without explicit prior consent and approval.

2. The information contained in this Manual is subject to change or review without

prior notice.

3. Be sure to follow all safety, operating and handling precautions described in this

Manual and the regulations in force in the country in which this product is to be
used.

5th Edition Apr, 2008
First Edition September, 2005

－ １ －

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.

WARNING

CAUTION

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 a potentially hazardous situation which,
if not avoided, could result in death or serious
injury.

Indicates a potentially hazardous situation which,
if not avoided, may result in minor to moderate
injuries or in property damage.

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.

－ ２ －

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.

DON’T

 Do not modify or disassemble the enclosure.

Strength degradation and defects of enclosure can cause explosion.

DON’T

 Do not use parts of other products.

Protective performance degradation for hazardous location can cause explosion.

DON’T

 Do not touch live circuits until assembly of all components is not over.

６Ｆ８Ａ０８７０

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

－ ３ －

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.

Power supply from mains power
can cause electric shock or

DO

 Turn off mains power before

conducting wiring work.

circuit break-down.

Wiring while power is applied
can cause electric shock.

DO

 Turn off mains power before working on

pipes.

Working on pipes while power
is applied can cause

DO

 Do not conduct wiring work with bare

hands.

DON’T

 Do not work on piping and wiring with wet

hands.

electric shock.

Remaining electric charge

even if power is turned off can
still cause electric shock.

Wet hands may result in
electric shock.

DON’T

 Use an appropriate device to carry and install

 Do not modify or disassemble the

 Ground the LF414/LF600F, LF610Fand LF414

the LF414/LF600F, LF610F and LF414.

If this product falls to the ground,
injury, or malfunction of or damage

DO

LF414/LF600F, LF610F and LF414
unnecessarily.

DON’T

independently from power equipment.

(100 ohm or less ground resistance)

DO

Use crimped terminal lugs for the terminal
board and GND terminal.

DO

to the product, can be caused.

Modifying or disassembling this
product can cause

electric shock,
damage to this product.

Operating this product
without grounding can cause
electric shock or malfunction.

Loose connections can cause

electric shock, fire from

excessive current or system

malfunction.

６Ｆ８Ａ０８７０

malfunction of or

The label shown left is placed near the terminal board for
power supply on the converter.

black border and symbol on yellow triangle)

(A
Be alert to electric shock.

－ ４ －

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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.

DON’T

Wet hands may result in
electric shock.

DON’T

Wiring while power is applied can
cause electric shock.

 Do not use a fuse other than the one

specified.

Using a fuse other than the one
specified can cause system

DON’T

Use a rated fuse as follows:

Fuse rating:

• 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)

failure, damage or malfunction.

 Do not touch the LF414/LF600F, LF610F and

LF414 main body when high temperature
fluid is being measured.

The fluid raises the main body
temperature and can cause burns

DON’T

when touched.

The label shown left is placed near
the terminal board for power input
of the converter. (A
symbol on yellow triangle)
Be alert to electric shock.

black border and

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.

－ ５ －

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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.

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.

To put the flowmeter temporarily on the floor,

－ ６ －

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

• 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.

shock or cause damage to the flowmeter electronics.

６Ｆ８Ａ０８７０

(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.

－ ７ －

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

－ ８ －

６Ｆ８Ａ０８７０

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

Separate

 Inspect the flowmeter for indications of damage that may have occurred during shipment.

Instruction manual ---------------Once each for the converter and detector

 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.

－ ９ －

６Ｆ８Ａ０８７０

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

* 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.

*2

communication (optionally available).

－ １０ －

g

3. Names of Parts

3.1 Appearance

3.1.1 Appearance of LF414/LF600F, LF414/LF610F

(1) Meter size of 1/2 inch (15mm)

Integral

Ground terminal for converter

Ground terminal for detector

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

For the detail of the converter, check the LF600F,
LF610F converter's instruction manual.

Terminal block cover

Figure 3.1.1 Appearance of LF414/LF600F, LF610F

Meter size 1/2inch(15mm)

６Ｆ８Ａ０８７０

Flow direction arrow

Detector

Grounding rin

Window for electrode

－ １１ －

g

(2) Meter size of 1inch (25mm)

Terminal block cover

Ground terminal for converter

Ground terminal for detector

Figure 3.1.2 Appearance of LF414/LF600F, LF610F

６Ｆ８Ａ０８７０

For the detail of the converter, check the LF600F,
LF610F converter's instruction manual.

Meter size 1 inch(25mm)

Detector

Grounding rin

Window for electrode

Flow direction arrow

－ １２ －

g

(3) Meter size of 1 1/2 to 4 inch (40 to 100mm)

Terminal block cover

Ground terminal
for converter

Ground terminal for detector

For the detail of the converter, check the LF600F ,
LF610F converter's instruction manual.

Grounding rin

Figure 3.1.3 Appearance of LF414/LF600F, LF610F

Meter size 1 1/2 to 4 inch (40 to 100mm)

Detector

６Ｆ８Ａ０８７０

Flow direction arrow

－ １３ －

g

gs

(4) Meter size of 6 and 8 inch (150 and 200mm)

Terminal block cover

Ground terminal
for converter

Ground terminal for detector

For the detail of the converter, check the LF600F,
LF610F converter's instruction manual.

Grounding rin

Detector

Figure 3.1.1 Appearance of LF414/LF600F, LF610F

Meter size 6 and 8 inch(150 and 200mm)

Flow direction arrow

６Ｆ８Ａ０８７０

Lifting Lu
*Only 8 inch (200mm)
provided.

－ １４ －

g

3.1.2 Appearance of LF414

(1) Meter size of 1/2 inch (15mm)

Separate

Excitation cable
3/4 - 14 NPT

Ground terminal for detector

Signal cable
3/4 - 14 NPT

Figure 3.1.2 Appearance of LF414

Meter size 1/2inch(15mm)

Terminal Box

Detector

Grounding rin

Window for electrode

６Ｆ８Ａ０８７０

Terminal Box Cover

Flow direction arrow

－ １５ －

g

(2) Meter size of 1inch (25mm)

for Excitation cable
3/4 - 14 NPT

Ground terminal for detector

for Signal cable
3/4 - 14 NPT

Figure 3.1.2 Appearance of LF414

Meter size 1 inch(25mm)

Terminal Box

Detector

Grounding rin

Window for electrode

６Ｆ８Ａ０８７０

Terminal Box Cover

Flow direction arrow

－ １６ －

g

(3) Meter size of 1 1/2 to 4 inch (40 to 100mm)

Excitation cable
3/4 - 14 NPT

Ground terminal for detector

Signal cable
3/4 - 14 NPT

Figure 3.1.3 Appearance of LF414

Meter size 1 1/2 to 4 inch (40 to 100mm)

Terminal Box

Grounding rin

Flow direction arrow

Detector

６Ｆ８Ａ０８７０

Terminal Box Cover

－ １７ －

gs

g

(4) Meter size of 6 and 8 inch (150 and 200mm)

Excitation cable
3/4 - 14 NPT

Ground terminal for detector

Signal cable
3/4 - 14 NPT

Terminal Box

Grounding rin

Figure 3.1.4 Appearance of LF414

Meter size 6 and 8 inch(150 and 200mm)

Flow direction arrow

Detector

矢印銘板

６Ｆ８Ａ０８７０

Terminal Box Cover

Lifting lu
*Only 8 inch (200mm)
provided.

－ １８ －

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

６Ｆ８Ａ０８７０

－ １９ －

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.

６Ｆ８Ａ０８７０

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)

Operating this product without
grounding can cause electric

DO

 Install a switch and fuse to isolate the

LF414/LF600F, LF610F and LF414 from
mains power.

DO

 Do not work on piping and wiring with wet

hands.

shock or malfunction.

Power supply from mains power
can cause electric shock or
circuit break-down.

Wet hands may result in electric

shock

 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.

DO

 Do not modify or disassemble the

LF414/LF600F, LF610F and LF414

unnecessarily.

Modifying or disassembling this product
can cause electric shock,

DON’T

or damage to this product.

The label shown left is placed
near the terminal board for power
supply to the converter.

Be alert to electric shock

DON’T

malfunction

－ ２０ －

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

Separate

300m.

６Ｆ８Ａ０８７０

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

－ ２１ －

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

－ 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 －

m

m

m

６Ｆ８Ａ０８７０

Table 4.1 Bolt length and Nut tightening torque

Meter size

15mm 1/2” 4 1/2” 150
25mm 1” 4 1/2” 170
40mm 1 1/2” 4 1/2” 195
50mm 2” 4 5/8” 215

80mm 3” 4 5/8” 225
100m
150m
200m

Meter size

15mm 4 M12 150 16 to 19 4 M12 150 10 to 13
25mm 4 M12 165 27 to 34 4 M16 170 22 to 28
40mm 4 M16 190 58 to 72 4 M16 190 32 to 40
50mm 4 M16 205 78 to 98 4 M16 200 43 to 53

80mm 8 M16 210 54 to 67 8 M16 210 27 to 34
100mm 8 M16 220 79 to 99 8 M16 215 37 to 46
150mm 8 M20 340 164 to 205 8 M20 340 70 to 88

P.C.S

4” 8 5/8” 235
6” 8 3/4” 355
8” 8 3/4” 430

Through Bolts Through Bolts

P.C.S

200mm
200mm

(DIN/BS 16)

8 M20 410 146 to 183

12 M20 410 156 to 195

ANSI class 150 ANSI class 300

Through Bolts Through Bolts

Dia-

meter

DIN/BS 10, DIN/BS 16 JIS 10K

Dia-

meter

Length

[mm]

Length

[mm]

(DIN/BS 10)

Tightening

torque

[N･m]

12 to 15
21 to 26
32 to 40
52 to 65
71 to 88

52 to 65
104 to 130
146 to 183

Tightening

torque

[N･m]

P.C.S

4 1/2” 155 25 to 31
4 5/8” 180 53 to 66
4 3/4” 215 96 to 120
8 5/8” 220 52 to 65
8 3/4” 240 85 to 106

8 3/4” 255 125 to 156
12 3/4” 375 138 to 173
12 7/8” 460 227 to 284

P.C.S

12 M20 410 60 to 75

Dia-

meter

Dia-

meter

Length

[mm]

Length

[mm]

Tightening

torque
[N･m]

Tightening

torque

[N･m]

－ ２４ －

(1)

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

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

shown in Table 4.2 is required.

Table 4.2 Required straight pipe length on the upstream side

L=5D L=10D

90°bent

L

(2) Tee

L

(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)

(5) Other valves (not fully opened)

L

６Ｆ８Ａ０８７０

Mount-Anywhere

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.

Technology:

－ 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.

Detector

(a)

The electrodes should be positioned horizontally relative to the ground surface in any piping
installation. See Figure 4.6.

Detector

Figure 4.6 Installation position of the detector

(c)

Figure 4.5 Detector Piping Orientation

(b)

A

A'

Flow direction

(a) Horizontal pipe installation
(b) Vertical pipe installation
(c) Sloping pipe installation

Ground surface

Electrodes

Cross-section A - A'

Ground surface

－ ２６ －

(3) Flow Direction

Install

the detector in accordance with the flow direction arrow on the detector. See Figure 4.7.

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.

Figure 4.8 Detector with an upright pipe run at downstream outlet

Figure 4.9 Detector with sufficient head pressure at downstream outlet

Vertical pipe run

Detector

６Ｆ８Ａ０８７０

Flow direction arrow

Detector

－ ２７ －

4.4 Grounding

 Do not wire cables and replace parts

when power is supplied.

６Ｆ８Ａ０８７０

CAUTION

 Do not work on piping and wiring with wet hands.

Integral

Wet hands may result in electric shock.

DON’T

Wiring work and replacing
parts in the power-on state
may cause electric shock.

DON’T

(1) Grounding of the LF414/LF600F, LF414/LF610F type

Ground as shown in Figure 4.10. Make the grounding wire as short as possible. Use grounding

wire material of IV wire 5.5mm

instruments where grounding current may flow. (An independent grounding is preferable.)

Conductive material pipe
Example: Metal, etc.

Grounding terminal

2

or more. Do not share a grounding wire with other

Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.

• 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

Grounding wire

• If the piping material is non-conductive, perform
grounding (grounding resistance 100Ω or less).

grounding resistance
100Ω or less

－ ２８ －

(2) Grounding of the LF414 type

Separate

Converter

terminal

block

Shield twisted

Input signal

cable

Shield twisted

Wiring between Detector and Converter (For

grounding the detector, see Figure 4.12 below.)

Grounding terminal

• If the piping material is conductive, connect the

grounding wires to the both ends of the piping flange.

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 5.5mm

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 G X

B E Y FG

Grounding terminal

(100 ohm or less

ground resistance)

Excitation cable

Grounding terminal

G E

A B X Y

Figure 4.11 (a)

Conductive material piping
Example: Metal, etc.

Grounding

wire

Converter

terminal

block

(100 ohm or less

ground resistance)

Figure 4.12 Grounding the LF414 Type Detector

６Ｆ８Ａ０８７０

2

or more. Do not share a grounding wire with

Converter

terminal

block

Shield twisted

Input signal

cable

Shield twisted

Wiring between Detector and Converter

Non-conductive material piping
Example: Resin product or metal piping whose inside is resin lined

(when grounidng of the detector is difficut)

Grounding terminal

• If the piping material is non-conductive, perform grounding

resistance 100Ω or less.

A G X
B E Y FG

G E

A B X Y

Figure 4.11 (b)

Grounding wire

(100 ohm or less ground resistance)

Grounding terminal

(100 ohm or less

ground resistance)

Excitation cable

Grounding terminal

Converter

terminal

block

－ 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

 Install a switch and fuse to isolate the

LF414/LF600F, LF610F and LF414 from
mains power.

Power supply from mains power can

cause electric shock or circuit

DO

 Do not work on piping and wiring with wet

hands.

break-down.

Wet hands may result in electric

shock

DON’T

 Do not conduct wiring work with bare hands.  For the power supply wiring and grounding wiring,

Remaining electric charge even if

power is turned off can still cause

DON’T

Do not modify or disassemble the LF600F,

LF610F, LF602F and LF612F

unnecessarily.

DON’T

Flowmeter accuracy may be affected by the way wiring is executed. Proceed with correct wiring taking
the precautions in following pages.

electric shock.

Modifying or disassembling this

product can cause electric shock,

malfunction of or damage to this

product.

 Turn off mains power before conducting wiring

work.

Wiring while power is applied can cause
electric shock.

DO

 Ground the LF600F, LF610 independently from

power equipment. (100 ohm or less ground

resistance)

Operating this product without grounding
can cause electric shock or malfunction.

DO

use crimping terminals with insulated sleeve.

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.

DO

The label shown left is placed near the
power supply terminal on the
converter.
Be alert to electric shock.

－ ３１ －

Separate

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.

5.1 Cables

Use the kind of cables shown in Table 5.1 to wire the converter.

Name Cable name

Power cable

Output

signal cable

Flow rate

signal cable

Separate

Separate

Excitation

cable

Table 5.1 Installation Cables

Nominal

cross-section

al area

3-core vinyl sheathed cable or 2-core vinyl
sheathed cable

The number of conductors the cable contains differs depending on the
specification of the output signal cable.
Use a shielded cable of finished outer diameter 11 to 13mm and
nominal cross-sectional area 1.25mm

2-core shielded chloroprene cabtyre cable
( Rubber covered cable )

3-core chloroprene cabtyre cable
( Rubber covered cable )

2

.

2 mm² 11~13mm

0.75 mm

2 mm

1.25 m2

Finished

outer

diameter

2

11~13mm

2

11~13mm

Description

CVV JIS C 3401 or
equivalent

CVV-S JIS -258-C or
equivalent

2PNCT-S

JIS C 3327 or

equivalent

2PNCT

JIS C 3327 or

equivalent

－ 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 5.5mm

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.

2

or more. The size of the external grounding terminal screws is

Separate

5.3.2 Notes on Wiring of the Separate type (LF414)

• 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

Separate

• 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.

Figure 5.1 Terminal Treatment of Power Cable, Current Output Cable

Crimping terminal

25~45mm

and Digital I/O cable

LF600F, LF610F type: M4
LF602F, LF612F type: M3.5

(2) Excitation cable

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 －

Separate

６Ｆ８Ａ０８７０

(3) Connecting the input signal cable

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.

A Black

G Shield

B White

Figure 5.3 Terminal Treatment of Flow Rate Signal Cable

M3.5 crimping terminal

25~45mm

Thermal contraction tube or vinyl tube

● 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

Shield mesh

b. Pull out the internal coated wires from the hole of the

shielded 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

 Do not touch the terminal board when

power is supplied.

Touching the terminal board
when power is supplied can

DON’T

cause electric shock.

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

CAUTION

 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

 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 －

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

６Ｆ８Ａ０８７０

 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

power is applied.

 Do not touch the LF414/LF600F, LF610F

and LF414 main body when high
temperature fluid is being measured.

Wiring while power is applied

DON’T

can cause electric shock.

DON’T

The fluid raises the main body
temperature and can cause burns.

－ 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: Glass tube fuse , Medium Acting type (normal blow) 1 piece
Rating: 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

Integral

replace the display unit with a new one. In order to use the display unit stably for a long time, it is preferable
to replace it early. For inspection and replacement, please contact your nearest Toshiba representative.

 Power supply unit (also used for excitation board)

Electronic components deteriorate faster when the ambient temperature is high. The life of the power

supply unit in the converter is 9 to 10 years if the ambient temperature is 40°C, and 5 to 6 years if it is

Integral

50° C. To extend the life of the flowmeter, we recommend you replace the power supply unit early.

Contact your nearest Toshiba representative for a flowmeter inspection or unit replacement.

－ 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

Are power supplies correct

for each device?

Are power and I/O cables

installed correctly?

Is the fuse burnt?

START

YES

YES

NO

NO

NO

YES

Use the correct power supply for each

device.

Install the cables correctly.

to Chapter 5, “Wiring.”

Refer

Replace the fuse with a new one.

Is the flow range correctly set?

YES

Is the flow direction match
with the arrow mark on the

detector?

YES

Contact your nearest Toshiba

representative.

NO

NO

－ ４０ －

Set correctly.

Refer to combined converter's manual.

Install the detector correctly.

to Chapter 4, “Installation”

Refer

y

7.2.2 Flow rate indicated is not correct

Is the flow range correctly

set?

Is zero point correctly set?

Is
value as stated on the

flow direction tag?

Is

the inside wall of detector

pipe contaminated?

Is

the output load resistance

as specified?

Is accuracy calculated as follows?

(Measured flow rate)-(Actual flow rate)

Contact your nearest Toshiba

representative.

START

YES

YES

the excitation current

YES

NO

YES

Are there two load
resistors connected to
the output in parallel?

NO

Actual flow rate

YES

NO

NO

NO

YES

NO

YES

×

100%

NO

Set correctly.

Refer to combined converter's manual.

Perform the zero adjustment.
Refer to combined converter's manual.

Set correctly.

Refer to combined converter's manual.

Clean the inside of the detector pipe.

Design the output circuit so that the
output load resistance is less than
750

Ω.

Connect the two load resistors in
series, if necessar

Calculate as shown on the left.

６Ｆ８Ａ０８７０

.

－ ４１ －

7.2.3 Flow rate indication is not stable

Is power supply voltage

within the specified range?

Are cables securely connected?

Is the flowmeter grounded
with 100Ωor less ground

resistance?

Is the detector pipe filled

with fluid?

Is the fluid carrying bubbles?

Is

there high-voltage or large

current cable or equipment

near the flowmeter?

Contact your nearest Toshiba

representative.

START

NO

YES

NO

YES

NO

YES

NO

YES

YES

NO

YES

NO

Note 1: If the detector tube is not filled with

６Ｆ８Ａ０８７０

Use a power supply within the

specified range.

Connect each cable securely to the

terminal board.

Ground the flowmeter with a copper
braid or
good earth ground.

(100Ωor less ground resistance)

Design piping so that the detector

pipe is filled with fluid all the time.

Design piping so that the fluid does

not carry bubbles.

Install the flowmeter away from
equipment producing electromagnetic

or electro- static interference.

operating fluid, the flow is indefinite and
measurement is impossible. Be sure to fill
the detector tube with operating fluid
before starting measurement.

wire(5.5 mm² minimum) to a

－ 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
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.

B (see Figure 14.1). When an

E = K × B × D × V [V] ........ (Eq. 14.1)

Volumetric flow rate Q [m

π × D²

Q = × V ................(Eq. 14.2)

Using the Equation 14.1 and 14.2
E = K × B × D × × Q

4 × K × B

E = × Q ............(Eq. 14.3)

π × D

Therefore, volumetric flow rate is directly proportional to the induced voltage.

4
π × D²

3

/s] is:

E = induced electrode voltage [V]
K = constant
B = magnetic flux density [T]
D = meter pipe diameter [m]
V = fluid velocity [m/s]

Square-Wave Excitation

Figure 8.1 Principle of Operation

The LF414/LF600F, LF414/LF610F and LF414 uses the square-wave excitation method, which
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.

provides

－ 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: 5 µS/cm minimum
Fluid temperature: 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 －

g

(

)

Coating: No coating (for meter sizes 25 to 100 mm),

Structure: IP67 and NEMA 4X Watertight ( Standard )
Cable connection port: 3/4-14NPT male screw for both signal cable and exciting cable

６Ｆ８Ａ０８７０

Phthalic acid resin coating, pearl-gray colored (standard for meter size 15,150, 200mm)

Cable length: Allowable cable length between the converter and the detector varies with the electrical

conductivity of fluid. See Figure 9.1

Separate

Figure 9.1 Electrical Conductivity vs. Cable Length

〔m〕

300
200

100

m

ケーブル 許容長さ

50

th

30
20

10

Allowable cable len

5

3

53

Electrical conductivity (μS/cm)

10 20 30 50 100 200

導電率〔μS/cm〕

－ ４５ －

y

(

)

６Ｆ８Ａ０８７０

Flow and calibration velocity range:

It calibration by standard Range shown in the table below when Range is not
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.

specified.

Standard Flow rate Meter size

(mm)

15 2 3.144
25 6 3.395
40 15 3.316
50 25 3.537
80 60 3.316
100 100 3.537
150 200 3.144
200 300 2.653

Volume (m

3

/h) Velocity (m/s)

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.

10 15 25 40 50 80 150

100

200

mm

流

m/s

速

〔

m/s

〕

1

0.3

Flow velocit

0.1

-2

10

Figure 9.2 Flow velocity vs. flow volume

SI Unit

Flow volume

Meter size

15mm
25mm
40mm
50mm
80mm
100mm
150mm
200mm

10

-1

0.0631m3/h 0.1908m3/h 0.6361m3/h 6.361m3/h

0.1767m3/h 0.5301m3/h 1.767m3/h 17.67m3/h

0.4523m3/h 1.357m3/h 4.523m3/h 45.23m3/h

0.7067m3/h 2.120m3/h 7.067m3/h 70.67m3/h

1

流量〔m3/h〕

Flow volume (m3/h)

0.1m/s 0.3m/s 1m/s 10m/s

1.809m3/h 5.428m3/h 18.09m3/h 180.9m3/h

2.827m3/h 8.482m3/h 28.27m3/h 282.7m3/h

6.361m3/h 19.08m3/h 63.61m3/h 636.1m3/h

11.31m3/h 33.93m3/h 113.1m3/h 1131m3/h

1

10

Flow velocity range

10

2

10

3

10

4

－ ４６ －

US Unit

Flow volume
Meter size

1/2 inch 0.2801 gal/min 0.8403 gal/min 2.561 gal/min 8.538 gal/min 28.01 gal/min

1 inch 0.7781 gal/min 2.334 gal/min 7.115 gal/min 23.72 gal/min 77.81 gal/min

1 1/2 inch 1.992 gal/min 5.975 gal/min 18.21 gal/min 60.71 gal/min 199.2 gal/min

2 inch 3.112 gal/min 9.337 gal/min 28.46 gal/min 94.86 gal/min 311.2 gal/min
3 inch 7.967 gal/min 23.90 gal/min 72.85 gal/min 242.8 gal/min 796.7 gal/min
4 inch 12.45 gal/min 37.35 gal/min 113.8 gal/min 379.4 gal/min 1,245 gal/min
6 inch 28.01 gal/min 84.03 gal/min 256.1 gal/min 853.8 gal/min 2,801 gal/min
8 inch 49.80 gal/min 149.4 gal/min 455.3 gal/min 1,518 gal/min 4,980 gal/min

６Ｆ８Ａ０８７０

Flow velocity range

0.328ft/s 0.98ft/s 3ft/s 10ft/s 32.8ft/s

－ ４７ －

６Ｆ８Ａ０８７０

9.2 Type Specification Code

Table 9.2 Type Specification Code

Specification Code

1 2 3 4 5 6 7 8 9 10 11 12 13 14

L F 4

○：Standard △：Option －：Not available

Electromagnetic Flowmeter

Style

1

Area of use

４

Meter size
D
E
F
G
H

J
K
L

Mounting Structure

A
B

Connection flange standard
C
D
E

F
G
H

J
K
L

Electrode Material
B
C
D
E

F

Lining Material
A
B
C

Grounding Ring Material

C

D

E

F
G
H

A
B
C

Wafer type
Division 2 Hazardous Location
15mm ( 1/2" )

25mm ( 1" )
40mm ( 1 1/2" )
50mm ( 2" )
80mm ( 3" )
100mm ( 4" )
150mm ( 6" )
200mm ( 8" )

Hazardous location
cFMus, Division 2 approved
Detector/Converter combined type
Detector/Converter separate type

ANSI 150
ANSI 300
BS PN 10
BS PN 16
DIN PN 10
DIN PN 16
JIS 10K
JIS 16K
JIS 20K

316L stainless steel
Ti (titanium)
Pt-Ir (platinum/iridium)
Ta (tantalum)
Hastelloy C

Alkali-resistant ceramic (alumina) (standard)

Acid-resistant ceramic (alumina)

Teflon PFA
316 stainless steel

316L stainless steel
Ti (titanium)
Ta (tantalum)
Pt-Ir (platinum/iridium)
Hastelloy C
Flow and calibration velocity range

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

not provided

B

30m cable, provided

C

other lengths, provided
Coating

A

no coating ( Standard for meter size 25mm to 100mm )

B

phthalic acid resin coating pearl-gray colored
( Standard for meter size 15mm, 150mm and 200mm )

C

black tar epoxy resin, thickness 0.3 mm

D

black tar epoxy resin, thickness 0.5 mm

Description

15mm

to

100mm

○
○
○
○
○
○
○
○
○

○
△
△
△
△

○
○
△

○
△
△
△
△
△

○
△
△

○
△
△

○
△

△
△

150mm

and

200mm

○
○
○
○
○
○
○
○
○

△
△
△
△
○

―
―
○

○
△
△
△
△
△

○
△
△

○
△
△

―
○

△
△

－ ４８ －

Table 9.3 Type Specification Code (Exciting Cable and Signal Cable)

Model Specification Code

1 2 3 4 5 6 7 8

A C C Dedicated preformed cable

A Nominal cross-sectional area of Signal cable (Note 2)

Nominal cross-sectional area of Exciting cable (Note 1)
A
B

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

1

0

2

0

2

0

3

0

3

0

4

0

4

0

5

0

6

0

0

3

Description

1.25 mm²
2 mm²

0.75 mm²

Cable length

1 m

1

2 m

2

3 m

3

4 m

4

5 m From 1 to 10 meters (3.3 to 32.8 feet),

5

6 m Cable can be ordered in 1 meter increments.

6

7 m

7

8 m

8

9 m

9

10 m

0

15 m

5

20 m

0

25 m

5

30 m From 10 to 50 meters (32.8 to 164 feet),

0

35 m cable can be ordered in 5 meters increments.

5

40 m

0

45 m

5

50 m

0

60 m

0

0

300 m

From 50 to 300 meters (164 to 984 feet),
cable can be ordered in 10 meters increments.

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

６Ｆ８Ａ０８７０

1 to 200 m 1.25 mm² 12 mm

210 to 300 m 2 mm² 13 mm

－ ４９ －

10. Outline Dimensions

10.1 Outline dimensions of LF414/LF600F, LF414/LF610F

(1) Meter size of 1/2 inch (15mm)

Integral

(35)

252

143

φ49

70

225

64

Waight : approx 5kg

６Ｆ８Ａ０８７０

(2) Meter size of 1inch (25mm)

225

87

Waight : approx 5kg

241

(35)

143

80

－ ５０ －

(3) Meter size of 1 1/2 to 8 inch (40 to 200mm)

(L2)

(35)

ΦD1

225

６Ｆ８Ａ０８７０

143

L1

Meter size

(mm)

Overall lengeth

L1

Hight

(L2)

Diamete of

flange

D1

φ

Weight

(kg)

40 100 264 85 approx 6
50 110 280 102 approx 7
80 110 306 127 approx 8
100 120 338 159 approx 10
150 230 407 216 approx 22
200 300 458 267 approx 32

－ ５１ －

10.2 Outline dimensions of LF414

(1) Meter size of 1/2 inch (15mm)

Separate

６Ｆ８Ａ０８７０

Waight : approx 3kg

(2) Meter size of 1inch (25mm)

Waight : approx 3kg

－ ５２ －

(3) Meter size of 1 1/2 to 8 inch (40 to 200mm)

６Ｆ８Ａ０８７０

Meter size

(mm)

40 100
50 110
80 110
100 120
150 230
200 300

Overall lengeth

L1

Hight

(L2)

190
207
232
264
334
385

Diamete of

flange

D1

φ

85 approx 5
102 approx 6
127 approx 7
159 approx 9
216 approx 22
267 approx 36

Weight

(kg)

－ ５３ －

Appendix 1

６Ｆ８Ａ０８７０

1-1 A system block diagram for LF414/LF600F, LF414/LF610F

－ ５４ －

６Ｆ８Ａ０８７０

2-1 A system block diagram for LF414

－ ５５ －

Write down the address and phone number of the distributor from which you purchased this product, the
product code, SER.NO. and so on.

６Ｆ８Ａ０８７０

Distributor Address

Name

Phone number （ ） －

Product code LF

SER.NO.

－ ５６ －

６Ｆ８Ａ０９０８