Fuji Electric FSJ User manual

－i－
Thank you for purchasing Fuji Electric’s ultrasonic flowmeter.
This instruction manual describes ultrasonic flow transmitter (FSJ) and detector (FSX) installation, operation, inspection,
and maintenance, and should be read carefully before use.
First read this instruction manual carefully until an adequate understanding is acquired, and then
proceed to installation, operation, and maintenance of the flow meter. Improper handling may result in an
accident or a failure.
The specifications of this flow meter are subject to change without prior notice for improvement of the
product.
Do not attempt to modify the flow meter without permission. Fuji will not bear any responsibility for a
trouble caused by such a modification. If it becomes necessary to modify the flow meter, contact our
office in advance.
This instruction manual should always be kept on hand by the operator.
After reading the manual, be sure to store it at a place easier to access.
This instruction manual should be delivered to the end user.
If the instruction manual has been lost, request another one (with charge) to our local business office.
Manufacturer: Fuji Electric Co., Ltd.
Type: Described in the nameplate put on the main body
Date of manufacture: Described in the nameplate put on the main body
Product nationality: Japan
Note ©Fuji Electric Co., Ltd. 2019
Issued in Nov., 2019
Rev. 1st edition Mar. 2020
Rev. 2nd edition Aug. 2020
Rev. 3rd edition Jun. 2021
Reproduction of any part or the whole of this manual without
permission is strictly prohibited by laws.
Contents of the manual are subject to change without prior notice.
PREFACE

－ii－

－iii－
Before using this product, read the following safety precautions and use the product correctly.
The following items are important for safe operation and must be fully observed.
These safety precautions are ranked in 2 levels; "DANGER" and "CAUTION".
Warning/Symbol Meaning
Incorrect handling of the device may result in death or serious injury.
Incorrect handling may lead to a risk of medium or light injury, or to a risk of
physical damage.
Protective ground terminal.
Be sure to connect the product with the ground before starting operation.
This symbol indicates direct current (DC).
This symbol indicates alternating current (AC).
This symbol urges caution.
This symbol indicates that care should be taken to prevent electric shock
due to high voltage.
●Failure to heed the information indicated by “ ” may also result in serious
consequences.
All items indicate important content and must therefore be observed.
SAFETY PRECAUTIONS

－iv－
Caution on mounting and piping
●This unit is not explosion-proof type. Do not use it in a place with explosive
gases. Otherwise, it may result in serious accidents such as explosion,
fire, etc.
●The unit should be installed in a place conforming to the installation
requirements noted in this instruction manual. Otherwise, it may cause
electric shocks, fire, or malfunction of the unit.
●EMC standards
This product is intended for use in industrial areas and environments. This
equipment has been designed as a Class A product (for industrial
environment applications). Use in home environments may cause
jamming, and therefore use in such environments should be avoided. If
absolutely necessary to use the product in a home environment, take
appropriate external countermeasures.
●Install the flow meter according to the following steps to prevent it from
damage, and to avoid error or malfunction.
●During installation, make sure that the inside of the unit is free from cable
chips and other foreign objects. Otherwise, it may cause fire, failure, or
malfunction.
●The items under "Caution on Installation" noted in the manual must be
fully observed. Careless installation may result in trouble or malfunction of
the unit.Please observe the following in order to comply with safety
standards. It will not be possible to meet safety standards if unable to do
so.
●Connect an SELV for analog input and output, DO output, and serial
communication (RS-485).
●When installing on hot pipes, pay attention to the following items when
carrying out installation work. Failure to observe this may result in burns.
●Keep bare skin away from hot parts. If there is a risk of bare skin coming
into contact with hot parts, cover the skin by wearing gloves, long-sleeves,
long pants, and socks, etc.
●Take heat insulation measures if required for work (wearing heat-resistant
gloves, etc.).
●Perform a safety check of the area below the installation location to ensure
that there are no problems even if hot objects are dropped by accident.

－v－
Caution in wiring
●When performing wiring termination to prevent output trouble caused by
moisture, dew condensation, or water leak, follow “3.4.Flow transmitter
wiring” described in this manual.
●Before performing the wiring work, be sure to turn OFF the main power.
Otherwise, it may cause electric shock.
●Do not perform wiring work outdoors in rainy days to prevent insulation
deterioration and dew condensation. Otherwise, it may result in trouble,
malfunction, etc.
●Be sure to connect a power source of correct rating. Use of power source
out of rating may cause fire.
●The unit must be grounded as specified. Otherwise, it may cause electric
shocks, malfunction, etc.
●This will result in malfunction, and therefore every effort should be made to
keep the dedicated signal cable, input/output signal cable, resistance
temperature detector extension cable, and communication cable away
from other heavy-current lines in order to protect them from the effects of
noise.
●This will result in malfunction, and therefore the dedicated communication
cable, input/output signal cable, power cable, resistance temperature
detector extension cable, and communication cable must be wired
separately in conduits.
Caution on maintenance and inspection
●The unit should be inspected every day to always obtain good results of
measurements.
●When measuring the insulation resistance between the power/output
terminal and the case, follow “Section 6.2.2.How to measure the insulation
resistance” described in this manual.
●Blown fuses must be replaced.
●Be sure to contact Fuji Electric when replacement is required. Do not
attempt to replace fuses by yourself.

－vi－
(1) A place where ambient temperature and humidity are -20 to +60°C and 95% RH or less for flow
transmitter (FSJ).
(2) Indoor or outdoor locations where there is no exposure to direct sunlight or wind and rain.
(3) A place that provides enough space for periodic inspection and wiring work.
(4) A place not subjected to radiated heat from a heating furnace, etc.
(5) A place not subjected to corrosive atmosphere.
(6) A place not to be submerged.
(7) A place free from excessive vibration, dust, dirt, and moisture.
(8) A place remote from electrical devices (motor, transformer, etc.) which generate electromagnetic
induction noise, electrostatic noise, etc.
(9) A place not subjected to excessive fluid pulsation such as pump discharge side.
(10)A place that provides enough place for the length of the straight pipe.
(11)Altitude: up to 2000 m
(12)
Installation category: II
(13)Pollution degree: 2
CAUTION ON INSTALLATION LOCATION
Stipulated by IEC61010-1.

－vii－
Contents
PREFACEꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏi
SAFETY PRECAUTIONSꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ iii
CAUTION ON INSTALLATION LOCATION ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ vi
1. PRODUCT OUTLINE ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ1
1.1. Overview ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ1
1.2. Checking delivered items ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ1
1.3. Check on type and specifications ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ2
1.4. Name and function of each part ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ4
Flow transmitter (FSJ) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ4
Detector (FSX) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ5
2. OPERATION PREPARATION ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ6
2.1. Outline of installation procedureꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ6
2.2. Tools required for installationꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ7
3. INSTALLATIONꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ8
3.1. Installation location of flow transmitterꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ9
3.2. Detector installation location ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 10
Conditions on straight pipe ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 11
Mounting orientation ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 12
3.3. Installation of flow transmitter ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 13
Wall mountingꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 13
2B pipe stand mounting ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 14
3.4. Flow transmitter wiring ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 15
Cautions in wiringꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 15
Applicable wires ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 15
Treatment of wiring port ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 15
Wiring to each terminalꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 16
How to connect to terminal block ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 17
3.4.5.1. Cable treatmentꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 17
3.4.5.2. How to connect to power supply/signal
terminal block ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 18
3.4.5.3. Method for connecting to communication
board and temperature
measurement board terminal blockꞏꞏꞏ 19
3.5. Operationꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 19
Points of caution when operating equipment ꞏꞏ 19
4. PARAMETERS ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 20
4.1. Description of display/setting unit ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 20
Display/setting unit ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 20
Description of display/setting unitꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 21
4.2. Composition of key operation ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 22
4.3. Parameter initial value listꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 25
4.4. Parameter protection ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 27
Protection ON/OFFꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 27
4.5. Display language ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 28
How to select the language ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 28
4.6. Checking and Setting of Piping
Specifications/Detector ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 29
Checking piping parameter ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 29
Piping parameter setting methodꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 30
4.7. Setting of unit ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 32
Unit systemꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 32
Volume flow unit Setting method ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 33
Volume total unit setting methodꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 34
Mass flow unit setting methodꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 35
Mass total unit setting method ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 36
Pressure unit setting method ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 37
Temperature unit ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 38
4.8. Output Settingꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 39
Setting of flow rate range ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 39
4.8.1.1. Volume flow range (single range) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 39
4.8.1.2. Setting the mass flow rate range (single
range) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 41
4.8.1.3. The source of analog output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 42
4.8.1.4. Analog output at error (Burnout)ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 43
4.8.1.5. Output limitꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 44
Setting the total (actual)ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 46
4.8.2.1. Total flow pulse (total flow rate, pulse
width)ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 46
4.8.2.2. Preset value for total flow ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 48
4.8.2.3. Setting the MASS TOTAL pulse (MASS
TOTAL rate, pulse width)ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 49
4.8.2.4. Setting the MASS TOTAL preset valueꞏꞏꞏꞏ 50
4.8.2.5. TOTAL mode (total reset, start, stop) ꞏꞏꞏꞏꞏꞏ 51
4.8.2.6. Totalization processing at error (Burnout)ꞏ52
DO outputꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 53
4.8.3.1. Total pulse output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 54
LCD indicationꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 55
Damping ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 56
Low flow rate cutting ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 57
4.9. Application operation of parameter ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 58
Automatic 2 rangesꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 58
Bi-directional range ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 60
Bi-directional auto 2 range ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 62
Rate limitꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 64
DO outputꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 66
4.9.5.1. FULL SCALE 2 output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 66
4.9.5.2. Alarm output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 67
4.9.5.3. Flow switch ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 68
4.9.5.4. Total switch ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 70
4.9.5.5. Range over output and pulse range over
output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 71
4.9.5.6. Output at the minus flow direction ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 72
4.9.5.7. Input alarm setting method ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 73
4.9.5.8. How to set the maintenance period ꞏꞏꞏꞏꞏꞏꞏꞏ 74
Calibrating the measured valueꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 75
4.10. Input settings ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 76
AI range setting (option)ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 76
Temperature input setting (option) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 78
4.11. Maintenance modeꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 79
Calibrating the analog output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 79
Constant current output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 80
Checking the total pulse output actionꞏꞏꞏꞏꞏꞏꞏꞏꞏ 81
Checking the status output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 82

－viii－
Analog input calibration methodꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 83
Analog input check method ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 84
Confirming the input temperatureꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 85
Test mode (simulated flow rate output)ꞏꞏꞏꞏꞏꞏꞏꞏ 86
Serial transmission (RS-485) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 88
Setting the ID No. ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 90
Confirming the software versionꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 90
LCD backlight setting ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 91
Receipt signal auto search ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 92
Maintenance period settingꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 93
5. MOUNTING OF DETECTOR ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ94
5.1. Detector mounting procedureꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ94
Mounting of detectorꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 95
Mounting dimensions diagram ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 95
5.2. Selecting the mounting locationꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ96
5.3. Treatment of detector mounting surface ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ98
5.4. Mounting the noise elimination frame ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ99
5.5. Sensor mounting bracket mounting ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 100
5.6. Sensor mountingꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 101
5.7. Pre-anplifier mounting ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 102
5.8. Wiring connectionꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 103
5.9. Thermal insulating material application ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 104
5.10. Precautions for removing the noise elimination
frame ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 105
6. CHECK AND MAINTENANCEꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 106
6.1. Daily Check ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 106
6.2. Periodic Inspection ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 106
Reapplying grease ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ106
How to measure the insulation resistance ꞏꞏꞏꞏ107
6.3. Error and remedy ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 108
Display error ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 108
6.3.1.1. Checking the LCD/LED ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 108
6.3.1.2. Checking the LED lit in red ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ109
6.3.1.3. Checking the RAS information ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 114
Displaying the data in maintenance mode ꞏꞏꞏꞏ 115
Key errorꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 116
Error in measured value ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 117
When “SNR ALARM” is displayed ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 117
Error in analog output ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 118
Error in input temperatureꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 118
Remedying a hardware fault ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 118
7. APPENDIX ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 119
7.1. Specifications ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 119
7.2. Outline diagram ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 122
7.3. Parameter listꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 124
7.4. Piping data ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 127

－1－
1. PRODUCT OUTLINE
1.1. Overview
This ultrasonic flowmeter for steam is used to measure the flow rate of saturated steam inside pipes by mounting ultrasonic
sensors on the outside of existing pipes.
1.2. Checking delivered items
After opening the package, check if all following parts are present.
Note that the delivered parts vary according to the model.
Flow transmitter (FSJ)
Flow transmitter main unit ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 1 set
Waterproof gland (Built into the main unit) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 1 set
Wall mount frame (Built into the main unit) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 1 set
Pipe mounting bracket (option)
(bracket × 1, U-bolt × 1, nut × 2, spring washer × 2, plain
washer × 2) × 2 sets
Detector (FSX) and dedicated signal cable (FLYE)
Pre-amplifier unit × 1 set
Pre-amplifier mounting bracket × 1 set
Sensor unit (with cable) × 1 set (2 pieces)
Sensor mounting bracket × 1 set
Noise elimination frame × 3 sets
Dedicated signal cable × 1 piece
Acoustic coupler (option) × 1 piece
CD-ROM (Instruction manual and loader software) ꞏꞏꞏ 1 piece
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Items not delivered with product
Power cable, input/output signal cable, RS-485
communication cable, resistance temperature detector
(Pt100 3-wire connections)
Flow transmitter (FSJ)
Pipe mounting bracket (option)

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1.3. Check on type and specifications
The type and specifications of product are indicated on the specifications plate mounted on the flow transmitter and detector
frame.
Check that they represent the type you ordered, referring to the following code symbols.
<Flow transmitter (FSJ)>

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<Detector (FSX)>
< Dedicated signal cable >

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1.4. Name and function of each part
Flow transmitter (FSJ)
No. Name Key Description
(1) Wiring connection port This is a wiring connection port for the power cable, input/output signal
cable, communication cable, or resistance temperature detector cable.
(2) Signal cable connector This is a dedicated signal cable connector.
(3) Indication and setting unit Indicates and sets the flow rate, etc.
(4) Diagnostic indicator lamp
(LED)
Indicates whether flow rate and/or temperature is normal (green) or
abnormal (red).
(5) Escape key Returns to the next-higher menu level or cancels the set status.
(6) UP key Selects items, numeric values, and symbols.
(7) Shift key Moves the cursor and selects decimal place.
(8) Entry key Enters a selection or registers a setting.
(9) LCD display Indicates the flow rate or setting.
(10) Power terminal Connects the power cable.
(11) Fuse holder Fuse holder
(12) Input/output terminal
block
Connects analog input, analog output, or DO output cables.
(13) Communication board Mounted if communication is optionally designated.
(14) Communication board
terminal
Connects communication cable. (A communication board is optional)
(15) Temperature
measurement board
The product will be equipped with this board if temperature
measurement is selected.
(16) Temperature
measurement board
terminal block
Connects the cable from resistance bulb.

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Detector (FSX)
No. Name Description
(1) Sensor unit Sends and receives ultrasonic waves.
(2) Sensor mounting bracket Secures the sensor unit to pipes.
(3) Noise elimination frame Eliminates acoustic noise which propagates to pipe walls.
(4) Sensor cable Transfers transmission and receipt signals. Connect to the pre-
amplifier unit.
Pre-amplifier unit
No. Name Description
(1) Pre-amplifier body Amplifies receipt signals.
(2) Sensor connection terminals These are connectors used for connecting sensor cables.
(3) Flow transmitter connection
terminal
This is a connector used to connect the dedicated signal cable to the
flow transmitter.
(4) Pre-amplifier mounting bracket This is one of the brackets used to mount the pre-amplifier unit.

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2. OPERATION PREPARATION
2.1. Outline of installation procedure
Install the flowmeter according to the following procedure.
Section 3.3
Section 3.4
Installation of flow transmitter
Flow transmitter wiring
Power ON * Check the power supply specifications and wiring before
turning on the power.
(Refer to “1.3.Check on type and specifications”.)
Section 4.4 Parameter protection * Metric system is selected for unit.
* The initial display language is English.
Switch the languages as required.
NG When Y or C is selected for the 7th digit
Section 4.6 Checking and Setting of Piping
Specifications/Detector
Section
4.6.2 Piping parameter setting method
OK When A or B is selected for the 7th digit
Section 5 MOUNTING OF DETECTOR * Be careful not to mount the sensor units with wrong mounting
dimension.
NG (LED display is red)
Section
6.3.1.3 Checking the RAS information Section 6.3 Error and remedy
OK (LED display is green)
Contact Fuji Electric’s service representative.
Basic operation Section
4.8.1.5 Output limit * Check A, B for the 7th digit of code
symbol only.
Section 4.7 Setting of unit Section
4.8.2
Setting the total
(actual)
Section
4.8.1.1 Volume flow range (single range) Section
4.8.3 DO output
Section
4.8.1.4
Analog output at error (Burnout)
Section
4.8.3.1 Total pulse output
Section
4.8.4 LCD indication
Application operation
Section
4.8.1 Setting of flow rate range Section 4.9.5.2 Alarm output
Section
4.9.1 Automatic 2 ranges Section 4.9.5.3 Flow switch
Section
4.9.2 Bi-directional range Section 4.9.5.4
Total switch
Section
4.9.3 Bi-directional auto 2 range
Section 7.3 Parameter list
Run (Measurement)
Chapter 6 CHECK AND MAINTENANCE
Note) When making changes to settings, do so after turning OFF parameter protection.

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2.2. Tools required for installation
Tools required for installation (list)
Tools Specification Process
Spanner
Width across flat: 13 mm Converter installation
Width across flat: 21 mm Sensor mounting, bracket mounting
Width across flat: 10 mm Sensor mounting
Socket wrench or spanner Width across flat: 10 mm Pre-amplifier mounting
Width across flat: 7 mm
Phillips screwdriver Converter cover opening/closing
Precision screwdriver 0.6 × 3.5 mm (flathead screwdriver)
Small type (Phillips screwdriver) Wiring connection
Torque driver or torque wrench
(if work space is limited)
Adjustment torque: 5 Nm Noise elimination frame mounting
Adjustment torque: 2 Nm Sensor mounting
Bit (for torque driver or torque wrench) Shape: hexagonal, size: H4 Noise elimination frame mounting
Shape: hexagonal, size: H5 Sensor mounting
Hexagonal wrench Width across flat: 4 mm Noise elimination frame mounting
Width across flat: 5 mm Sensor mounting

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3. INSTALLATION
Select an installation location that satisfies the following conditions for ease of maintenance and inspection, service life of
the instrument, and assurance of reliability all considered.
(1) A place where ambient temperature and humidity are -20 to +60°C and 95% RH or less for flow transmitter
(FSJ)
(2) A place not exposed to direct sunshine nor inclement weather.
(3) Space for periodic inspection and wiring work is available.
(4) A place not subjected to radiated heat from a heating furnace, etc.
(5) A place not subjected to corrosive atmosphere.
(6) A place not to be submerged.
(7) A place free from excessive vibration, dust, dirt, and moisture.
(8) A place remote from electrical devices (motor, transformer, etc.) which generate electromagnetic induction
noise, electrostatic noise, etc.
(9) A place not subjected to excessive fluid pulsation such as pump discharge side.
(10) A place that provides enough place for the length of the straight pipe.
(11) A place where drainage is discharged with steam traps and the steam humidity is small.
(12) Avoid places with rapid pressure fluctuation of 0.1 MPaG or above in 10 seconds.

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3.1. Installation location of flow transmitter
Secure at least 100 mm of space between the flow transmitter and nearby wall. Also secure a space of opening the front
cover in case of maintenance.
Allow space for cable wiring under the case.
Fig. 3.1 Top view of mounting

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3.2. Detector installation location
The detector mounting location, in other words on pipe at which flow rate is measured, will greatly affect measurement
accuracy, and therefore a location which satisfies the following conditions should be selected.
① Location with straight pipe indicated in "3.2.1 Conditions on straight pipe“
② There should be a space for maintenance around the pipe to which the detector is to be mounted. (Refer to "Fig. 3-2
Fig. 3-3“.)
③ The length of the sensor cable between the pre-amplifier unit and sensor unit is 2 m, and therefore the detector should
be installed in such a way that connection is possible.
④ The drainage should be discharged with steam traps and the steam humidity should be small.
⑤ Avoid places with rapid pressure fluctuation of 0.1 MPaG or above in 10 seconds.
Note) Ensure a space at both sides of the pipe to allow workers to carry out installation.
Fig. 3-2 Space required for pre-amplifier unit mounting location
Fig. 3-3 Space required for detector mounting location
Top view
300 or more
300 or more
200 or more
300 or more
300 or more
200 or more

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Conditions on straight pipe