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
Page 2
6F8A0870
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 -
Page 3
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
prohibitedactionisindicatedbyapicture or text inside or next to the circle
Indicates an action that is mandatory. DO this action.
The
mandatoryactionisindicatedbyapictureortextinside 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 -
Page 4
SAFETY PRECAUTIONS
Safety Precautions for Installation and Wiring
WARNING
Do not disconnectwhile 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 -
Page 5
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.
circuitbreak-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.
blackborderandsymbol on yellow triangle)
(A
Be alert to electric shock.
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Page 6
6F8A0870
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, damageormalfunction.
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.
blackborderand
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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Page 7
6F8A0870
Handling Precautions
To obtain the optimum performance from the LF600F, LF610F, LF602F and LF612F converter for years of
continuous operation, observe the following precautions.
(1) Do not store or install the flowmeter in:
・Placeswhere 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 -
Page 8
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.
shockorcausedamagetotheflowmeter 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.
9.2 Type Specification Code ············································································46
10. Outline Dimensions ·························································································48
Appendix 1 (A system block diagram) ·································································52
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Page 10
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.
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Page 11
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 -
Page 12
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
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Page 13
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
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Page 14
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 -
Page 15
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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Page 16
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 -
Page 17
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 -
Page 18
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 -
Page 19
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 -
Page 20
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
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Page 21
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
circuitbreak-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
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Page 22
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..
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 -
Page 24
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.
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 -
Page 27
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.
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 -
Page 29
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 -
Page 30
(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 -
Page 31
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 -
Page 32
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 -
Page 33
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
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 -
Page 35
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: M4Separate 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 -
Page 36
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 -
Page 37
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 -
Page 38
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 -
Page 39
7. Maintenance and Troubleshooting
Safety precaution for Maintenance and Troubleshooting
WARNING
Do not disconnectwhile 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 -
Page 40
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 -
Page 41
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.
toChapter5,“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 Chapter4, “Installation”
Refer
Page 42
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 wallof 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
theexcitationcurrent
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 -
Page 43
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
therehigh-voltageorlarge
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(5.5mm²minimum)to a
- 42 -
Page 44
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
electricallyconductivefluidflowsinthepipe,anelectrode voltageEisinducedbetweenapairofelectrodes
placedatrightanglestothedirectionofmagneticfield.TheelectrodevoltageEisdirectly proportional to the
average fluid velocity V.
The following expression is applicable to the voltage.
B(seeFigure14.1).Whenan
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 -
Page 45
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)
See Table 9.2 Type Specification Code for optional materials and other related information.
- 44 -
Page 46
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 3050 100 200
導電率〔μS/cm〕
- 45 -
Page 47
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.