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
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SAFETY PRECAUTIONS
Safety signs and labels affixed to the product and/or described in this manual give important information for using
the product safely. They help prevent damage to property and obviate hazards for persons using the product.
Make yourself familiar with signal words and symbols used for safety signs and labels. Then read the safety
precautions that follow to prevent an accident involving personal injury, death or damage to property.
Explanation of signal words
The signal word or words are used to designate a degree or level of hazard seriousness.
The signal words used for the product described in this manual are WARNING and CAUTION.
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.
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SAFETY PRECAUTIONS
Safety Precautions for Installation and Wiring
WARNING
Do not disconnect while circuit is live unless location is known to be nonhazardous.
Live part of electric circuit or a high temperature department can cause explosion.
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.
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Protective performance degradation for hazardous location can cause explosion.
DON’T
Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the
Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing
3S8A2532,3S8A2533 (Refer to Appendix 1.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
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SAFETY PRECAUTIONS (continued)
Safety Precautions for Installation and Wiring
CAUTION
Install a switch and fuse to isolate the
LF414/LF600F, LF610F and LF414 from
mains power.
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.
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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.
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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.
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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,
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Handling Precautions (continued)
(5) If the inside of the converter and detector's terminal box are wetted or humidified, it may
cause insulation deterioration, which can result in fault or noise occurrence. So do not
conduct wiring in the open air on rainy days.
Also, be careful not to wet down the converter and detector's terminal box even in the case
of indoor wiring, and complete wiring work in a short period of time.
(6) Observe the following precautions when you open the converter housing cover:
• Do not open the cover in the open air unprotected against rain or wind. This can
cause electric
• 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.
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(8) This product may cause interference to radio and television sets if they are used near
the installation site. Use metal conduits etc. for cables to prevent this interference.
(9) Radio transmitters such as transceivers or cellular phones may cause interference to the
flowmeter if they are used near the installation site. Observe the following precautions
when using them:
• Close a transmitter cover before using a transceiver.
• Do not use a transceiver whose output power is more than 5 W.
• Move the antenna of a transceiver or a cellular phone at least 50 cm away from the
flowmeter and signal cables when using it.
• Do not use a radio transmitter or a cellular phone near the flowmeter while it is
operating online. The transmitter or cellular phone’s output impulse noise may interfere
with the flowmeter.
• Do not install a radio transmitter antenna near the flowmeter and signal cables.
(10) For reasons of flowmeter failure, inappropriate parameters, unsuitable cable
connections or poor installation conditions, the flowmeter may not operate properly. To
prevent any of these problems causing a system failure, it is recommended that you
have preventive measures designed and installed on the flowmeter signal receiving
side.
(11) For installation and connection of the converter, check the model number of
converter and read the instruction manual of the relevant converter.
* We assume no responsibility for nonconformity caused by violation of precautions described in this
manual or used in violation of the installation method and the operation method stipulated in a
relevant ordinance or other regulations.
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Table of Contents
SAFETY PRECAUTIONS ····················································································· 2
Handling Precautions ······························································································ 6
1. Product Inspection and Storage ······································································9
1.1 Product Inspection ·······················································································9
1.2 Storage ········································································································9
2. Overview ··········································································································10
3. Names of Parts ·································································································11
4. Installation ·······································································································20
4.1 Notes on Selecting the Installation Location ·············································21
4.2 Mounting Procedure····················································································21
4.3 Piping Connections ···················································································25
4.4 Grounding ································································································· 28
5. Wiring ·············································································································· 30
5.1 Cables ········································································································31
5.2 External Device Connections and Grounding ············································ 32
5.3 Notes on Wiring ······················································································32
5.4 Wiring ·····································································································33
6. Operation ········································································································· 36
7. Maintenance and Troubleshooting ································································· 37
7.1 Maintenance ······························································································38
7.2 Troubleshooting ························································································ 39
8. Principle of Operation ···················································································42
9. Specifications ··································································································43
9.1 Flowmeter Specifications ···········································································43
9.2 Type Specification Code ············································································46
10. Outline Dimensions ·························································································48
Appendix 1 (A system block diagram) ·································································52
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1. Product Inspection and Storage
1.1 Product Inspection
LF414 series electromagnetic flowmeter is shipped in a cardboard container filled with shock-absorbing
materials. Open the package carefully and check as follows:
Make sure the following items are included in the package.
For the integral type (when a converter and detector are united)
Electromagnetic flowmeter main unit --------------------------------- 1 unit
Instruction manual ---------------- One each for the converter and detector
Integral
For the separate type (when a converter and detector are separated)
Electromagnetic flowmeter converter---------------------------------- 1 unit
Electromagnetic flowmeter detector ----------------------------------- 1 unit
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.
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2. Overview
The LF414/LF600F, LF414/LF610F and LF414 electromagnetic flowmeter can be use in the
following hazardous (classified) locations.
ClassⅠ, Division 2, Groups A, B, C and D,
ClassⅡ, Division 2, Groups E, F and G
ClassⅢ
This product is a converter used for electromagnetic flowmeters that measure the volumetric flow rate of
conductive fluid using Faraday's law of electromagnetic induction.
You can bring out the functions of the converter when you place it in the converter housing you
prepare and use it in combination with a fluid rate measurement detector.
The converter sends out a signal to drive the detector excitation coil, which generates a magnetic field inside
the detector. The converter receives the signal electromotive force obtained by the detector. The signal
electromotive force is proportional to the generated flow rate in the fluid using Faraday's law of
electromagnetic induction. After carrying out its operation, the converter converts the signal electromotive
force to an analog signal output and displays the status, as a flow rate value.
Features
With a linear relationship between the flow rate and output signal, the electromagnetic flowmeter is
used as an easy-to-read indicator. In addition to this feature, it has the following outstanding features:
(1) Wide flow velocity range setting, such as a flow velocity range of 0~0.1 and 0~10m/s, is achieved.
(2) The unique Noise Sentry filter circuit enables you to obtain stable output automatically.
(3) Full graphic LCD that enables display of a large amount of information
With a large amount of a maximum of 14 characters x 8 lines, you can easily set up various displays
including bar graphs and alarm indications.
The backlight display allows you to read the indicator easily.
(4) Use of infrared switches
Use of infrared switches allows you to perform various operations, without opening the converter
housing cover.
(5) Intelligent functions
The widely used HART protocol communications system is used as a standard feature.
This product supports PROFIBUS
* 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).
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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)
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Flow direction arrow
Detector
Grounding rin
Window for electrode
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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.
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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
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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 －
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