Fuji Electric FLV User manual

Instruction Manual
INF-TN2FLVa-E
ULTRASONIC FLOWMETER
TYPE: FLV
FLW
ULTRASONIC FLOW METER
Fuji Electric Co.,Ltd.

i
Issued in July, 1998
We are grateful for your purchase of Fuji Electric’s Ultrasonic flowmeter.
• First read this instruction manual carefully until an adequate understanding is acquired,
and then proceed to installation, operation and maintenance of the converter (sensor) of
the ultrasonic flowmeter. Wrong handling may cause an accident or injury.
• The specifications of this flowmeter will be changed without prior notice for further
product improvement.
• Modification of this flowmeter is strictly prohibited unless a written approval is obtained
from the manufacturer. Fuji Electric will not bear any responsibility for a trouble caused
by such a modification.
• This instruction manual shall be stored by the person who actually uses the flowmeter.
• 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 without fail.
Manufacturer:
Type: Described in Fuji Electric’s company nameplate on main frame
Date of manufacture: Described in Fuji Electric’s company nameplate on main frame
Product nationality: Japan
PREFACE
Request
• It is prohibited to transfer part or all of this manual without
Fuji Electric’s permission in written format.
• Description in this manual will be changed without prior notice
for further improvement.
© Fuji Electric Co., Ltd. 1998
Fuji Electric Co.,Ltd.

ii
About ultrasonic flowmeter
The ultrasonic flowmeter in combination with the ultrasonic sensor mounted on the external wall of
existing piping, is used to convert the amount of flow of a fluid flowing in the piping into a unified
current signal and integrated pulse signal.
Check on type and specifications
The name of type is inscribed on the specification nameplate. Check the specification nameplate to
make sure that type and specifications are correct as ordered (the nameplate is attached to the side
of the converter, the upper side of the sensor cover (small type, large type) and the side of the frame
(for high temperature).
(1) Specification nameplate
Ultrasonic Flow Meter
Ultrasonic
Flow Meter
Type
FL
T19
No.
Type
Power Supply
Output DC4–20mA
Ser. No.
Fuji Electric Co.,Ltd.
Fuji Electric Co.,Ltd.
Fuji Electric Co., Ltd.
Mfd.
AC100–240V 50/60Hz
DC20–30V
Made in Japan
Ultrasonic Flow Meter
Type FLW
M f d. 199 Fujielectric Co., Ltd
Ser. No. T
Type.
Ser. No. T
TK773792
Mfd.
Converter
Small type sensor
High temperature sensor
Large type sensor

iii
• The cautionary descriptions listed here contain important information about safety, so they should
always be observed. Those safety precautions are ranked 2 levels; DANGER and CAUTION.
Wrong handling may cause a dangerous situation, in which
there is a risk of death or heavy injury.
Wrong handling may invite a dangerous situation, in which
there is a possibility of medium-level trouble or slight injury
or only physical damage is predictable.
Caution on installation and wiring
• This unit is not explosion-proof type. Do not use it in a place
with explosive gases to prevent explosion, fire or other serious
accidents.
• The flowmeter should be installed in a place that meets the
operating conditions shown in this instruction manual.
Installation at an unsuited place may cause electric shock, fire or
incorrect operation.
• Install the flowmeter according to the instruction manual.
Improper installation may lead to the cause of fall, trouble or
incorrect operation.
• When installing, make sure that the flowmeter interior is free
from cable chips and other foreign objects to prevent fire,
trouble, or incorrect operation.
• Connect a power source of correct rating to prevent fire acci-
dents.
• Before making wiring work, be sure to turn OFF the power
supply to prevent electric shocks.
• Use wiring materials of correct rating to prevent fire accidents.
CAUTION
DANGER
CAUTION
DANGER
CAUTION ON SAFETY

iv
PREFACE........................................................................................................................................ i
CAUTION ON SAFETY ...............................................................................................................v
CONTENTS .................................................................................................................................vii
1. OPERATING PARTS AND THEIR FUNCTIONS............................................................... 1
2. MOUNTING OF CONVERTER............................................................................................ 2
2.1 Selection of mounting place....................................................................................................... 2
2.2 Mounting method....................................................................................................................... 2
2.3 Outline diagram (unit: in.) ......................................................................................................... 3
3. WIRING OF THE CONVERTER.......................................................................................... 4
3.1 Before wiring ............................................................................................................................. 4
3.2 Wiring ........................................................................................................................................ 4
3.3 Treatment of the wiring port ...................................................................................................... 4
3.4 Wiring to terminals .................................................................................................................... 5
4. OPERATION AND WORKS................................................................................................. 6
4.1 Before operation......................................................................................................................... 6
4.2 Power ON and status.................................................................................................................. 7
5. SETTING OF PARAMETERS .............................................................................................. 8
5.1 Outline of operating procedures................................................................................................. 8
5.2 Description of key operation...................................................................................................... 9
5.3 List of setting items.................................................................................................................. 11
5.4 Setting of parameters ............................................................................................................... 12
5.4 (1) Setting of piping specifications ................................................................................... 12
5.4 (2) Setting of analog output range..................................................................................... 14
5.4 (3) Setting of analog output limit ...................................................................................... 16
5.4 (4) Setting of burn-out....................................................................................................... 17
5.4 (5) Setting of damping.......................................................................................................18
5.4 (6) Zero adjustment ........................................................................................................... 19
5.4 (7) Setting of measurement display specifications............................................................ 20
5.4 (8) Low flow output cut .................................................................................................... 21
5.4 (9) Setting of integrated output unit and constant ............................................................. 22
5.4 (10) Setting of integral preset value .................................................................................... 23
5.4 (11) Setting of integration switch........................................................................................ 24
5.4 (12) Selection of integral pulse output pulse width............................................................. 25
5.4 (13) Setting of measured value high and low limit switch.................................................. 26
5.4 (14) Setting of status output ................................................................................................27
5.4 (15) Calibration of measured value ..................................................................................... 28
5.4 (16) Switch of measurement unit system ............................................................................ 29
CONTENTS

v
5.4 (17) Selection of language (English/Japanese) ................................................................... 30
5.4 (18) Analog output check .................................................................................................... 31
5.4 (19) Analog output calibration ............................................................................................ 32
5.4 (20) Status output check ...................................................................................................... 33
5.4 (21) Test mode..................................................................................................................... 34
6. MAINTENANCE AND INSPECTION ............................................................................... 35
6.1 Maintenance ............................................................................................................................. 35
6.2 Inspection ................................................................................................................................. 35
7. TROUBLESHOOTING........................................................................................................ 36
7.1 How to confirm normal operation............................................................................................ 36
7.1 (1) When checking by LCD indicator ............................................................................... 36
7.1 (2) LCD indication when power turned ON...................................................................... 36
7.1 (3) Detail check for abnormal status ................................................................................. 37
7.2 Faults and remedies.................................................................................................................. 38
7.2 (1) LCD display abnormal................................................................................................. 38
7.2 (2) Key abnormal .............................................................................................................. 38
7.2 (3) Measured value abnormal............................................................................................ 39
7.2 (4) Analog output abnormal .............................................................................................. 42
7.2 (5) Remedy for hardware fault .......................................................................................... 42
8. MOUNTING METHOD....................................................................................................... 43
8.1 Mounting of sensor .................................................................................................................. 43
8.1 (1) Mounting procedure of sensor ..................................................................................... 43
8.1 (2) Selection of mounting place ........................................................................................ 44
8.1 (3) Selection of mounting method..................................................................................... 45
8.1 (4) Processing of sensor mounting surface ....................................................................... 45
8.1 (5) Determination of mounting position (with Z method for large and small types) ........ 46
8.1 (6) Cable end treatment ..................................................................................................... 47
8.1 (7) Connection of cable to small type sensor .................................................................... 48
8.1 (8) Mounting of small type sensor on pipe ....................................................................... 49
8.1 (9) Assembling procedure of the sensor............................................................................ 51
8.1 (10) Connection of cable to large type sensor ..................................................................... 52
8.1 (11) Mounting of large type sensor on pipe ........................................................................ 53
8.1 (12) Mounting of high temperature sensor on pipe............................................................. 54
APPENDIX 1. SPECIFICATIONS..........................................................................................A-1
APPENDIX 2. HOW TO MAKE GAUGE PAPER ................................................................ B-1
APPENDIX 3. COMPOSITION OF KEY OPERATION ....................................................... C-1
APPENDIX 4. PIPING DATA ................................................................................................D-1

ULTRASONIC FLOW METER
PIPE
7890
FUNK ESC
ENTER
OUTPUT DAMP ZERO
FLOW SW
456
TOTAL CUT OFF DISP
STATUS
123
CAL SYSTEM CHECK
6
1
54
3
2
1
I-out TR-out1 DOWN STRUP STR
23456 7
GND
8
HF
9
GND
SH SH
10
HF
1
LN
AC100–240V
23
TR-out2
Black
Total or Status Output
(Transister)
Analog Output
Green
Confirm converter power specifications
before connecting.
To Downstream SensorTo Upstream Sensor
White
White
Black
Green
1
DC20–30V
23
1
1. OPERATING PARTS AND THEIR FUNCTIONS
The names and funcitons of parts of the converter are as follows.
Names of parts of converter
Item Description
1
Wiring port Wiring port for power cable and signal cable
2
Data indicator Liquid crystal indicator for measurement data and set values
3
Key board Used for setting the conditions of adjustments and measurements.
4Main board terminal block Used for connecting signal cables from sensor.
Used for connection of signal cables for analog output and status output.
5
Power terminal block Used for connecting power cable.
6
Parameter table Used for entering setting data.

2
2.1 Selection of mounting place
Install the converter at a place satisfying the following conditions.
1. Ambient temperature does not
exceed a range of +14°F to +140°F.
When installing outdoors, attach a
shade or put the converter in an
outdoor panel to protect it from
direct sunlight.
2. Not exposed to moisture.
Even an immersion-proof type is
not protected against entry of water.
Make arrangements so that water
can be drained quickly.
3. Not exposed to dust or corrosive gases.
4. Free from vibrations and shocks.
5. Space shown in Fig.2-1 is available for easy inspection and adjustment.
2.2 Mounting method
Wall mounting or 2B bypass stand mounting is available for the converter.
For wall mounting, use 4-M8 bolts.
Be sure to mount the converter at correct position as shown in Fig. 2-2.
Make a hole in the wall or the like according to the cutout dimensions shown in the diagram below,
and mount the converter with M8 bolts.
2. MOUNTING OF CONVERTER
Fig. 2-1 Installation space (top view)
Fig. 2-2 Mounting method
In case of 2B pipe standing type, use U bolts (M8) on the market.
O
P
E
N
9.45" 9.45" 4"
or more
23" or more
312
M8 bolt Top
Bottom
312
2.83"
12.28"
12.28"
4-M8

3
2.3 Outline diagram (unit: in.)
Converter FLV Sensor FLW1 (small type sensor)
Sensor FLD32 (high temperature sensor)
Sensor FLW5 (large type sensor)
33 33
530
Locking unit
Element holder
Cursor
Mounting dimensions 0 to 330
Scale (inch)
BNC connector
Scale (mm) Saddle
Sensor
Name plate
Chain & spring
Frame end
Ground terminal
Pipe
(50A to 250A)
510
Mounting dimensions (0 to 250)
72
Sensor unit
Wire rope
Mounting spring
104
62
1/8" 3.75"
10.91"
.79"
12.28"8.66"
.55" 9.06"
2.83"
1.57" 1.57" 1.57" 1.57"
1.54"
20.08"
2.83"
2.36"
3.15"
1.57"
20.87"
4.09"
Mounting dimensions 0 to 13.0"
1.3"
3.66"
4.49"
2.44"
ø.75"
ø1.02" 1.3"
3.54"
8.07"
.08-ø.35"
Mounting Dimensions (0 to 9.85)
2"

4
3.1 Before wiring
1. For signal cable between the sensor and converter, use double-shielded coaxial cables specified
by Fuji Electric. The coaxial cable should be refrained from connecting midway.
2. The signal cable between the sensor and converter should be run in metalic conduits.
To prevent the effects of induction noise, upstream and downstream signal cables should be wired as
far away from power cable as possible.
3. An output signal cable should use shielded cable as much as possible.
4. To prevent the effects of noise, do not install signal cables together with power cable in the same
duct.
5. A power cable is provided with earth wire, it should be connected to the ground.
6. As this instrument is not equipped with a power switch, be sure to mount a power switch on the
instrument.
7. Wiring ports should be closed when they are not ready to use.
3.2 Wiring
Use the following cables:
• Power cable: 3 or 2 core cabtyre cable,
Nominal sectional area : 0.30 in.2or more,
Finished outside diameter : ø.43 in.
• Output signal cable: 2 core cable or multi-core cabtyre cable as needed.
Finished outside diameter : ø.43 in.
• Cable between sensor and converter:
Signal cable specified by Code Symbols
(High frequency coaxial cable with characteristic impedance of 50W)
Finished outside diameter : ø.29 in.
3.3 Treatment of the wiring port
The converter is an immersion-proof type specified by JIS C0920 “Rules for water-proof tests of
electromechanical instruments and wiring materials“. However, if the converter is to be installed in
a pit, air tightness treatment should be provided for the wiring port to prevent possible entry of
moisture, dew condensation or immersion of water.
Waterproof measures should be taken by using waterproof gland or plica tube gland furnished with
this instrument. A gland, which is not ready to be used, should be sealed by supplied cover.
3. WIRING OF THE CONVERTER

5
3.4 Wiring to terminals
Cables should be connected as shown in the following diagrams.
ULTRASONIC FLOW METER
PIPE
7890
FUNK ESC
ENTER
OUTPUT DAMP ZERO
FLOW SW
456
TOTAL CUT OFF DISP
STATUS
123
CAL SYSTEM CHECK
1
AC
23
LN
100 to 240V AC
AC power terminal
AC power
1
DC
23
20 to 30V DC
DC power terminal
DC power
Power board terminal block
123456 7
GND
8
HF
9
GND
SH SH
10
HF Black
Total/status output
(transister contact)
Analog output signal
Green
White
White
Black
Green
M4 screw(Note 1)
(Note 1) Case grounding terminal
M4 screw
I-out TR-out TR-out2 DOW STRUP STR
Main board teminal block
To sensor on
the up stream side
To sensor on the
down stream side
Note 1) Power board terminal block (for power) and case grounding terminals are available for
grounding terminals.
Be sure to earth either of them. (Class D, wiring)

6
4.1 Before operation
Check the following before starting operation.
1. Power
Power check See Item 4.2 (1)
2. Wiring
1) Check of main board terminal block
2) Check of power board terminal block See Item 3.4
3) Check of grounding terminal
3. Piping
1) Check that a piping is filled with fluid.
2) Check that there is no problem when water stops or flows.
4. OPERATION AND WORKS
}

7
4.2 Power ON and status
1. Power specification
1) AC power
Use power supply of 100 to 240VAC ±10% (50/60 Hz).
2) DC power
A power of 20V to 30V DC is available.
2. Power ON
When the instrument is turned on, the following data are displayed on the LCD after making a
self-check of the devices.
The numerical values and symbols being displayed are as described below:
FLV-2SYSTEM
Ver FL.V2
BACK PU MEMO YR
LO DINGA
Stab l iityWit!a
Load parameters and data from
non-volatile memory
Preparation to be taken until the measuring
conditions are met.
Measuring screen
Flow display (See Item 5.4 (7))
Flow direction
Display of integration, flow velocity and range %
(See Item 5.4 (7))
Status display (See Item 7.1. (1))
If the upstream and downstream sensors are connected reversely,
a symbol "—" appears on the LCD.
000.0m/ Rs
.0000m/s3

8
5. SETTING OF PARAMETERS
5.1 Outline of operating procedures
Proceed to the following procedure before starting measurements.
Chapter 3 Installation and wiring
of converter
Chapter 4 Power ON
5.4 (1) Check of piping
specification 5.4 (1) Input of piping
specification
Chapter 8 Installation of sensor
Zero adjustment
Chapter 7 Troubleshooting
Output specification setting
System setting
Integration specification setting
Flow switch setting
Measuring display specification setting
Damping setting
Low flow cut setting
Output compensation setting
Status output setting
Measurement
Chapter 6 Maintenance and check
NG
OK
Measurement error
Measurement OK
5.4 (6)

9
5.2 Description of key operation
Note) When adjustment is performed or setting is changed in this Chapter, be sure to enter
parameters in the list attached to the converter.
Pressing the FUNC key enables you to perform the functions shown on the upper side of the
ten-keys.
ULTRASONIC FLOW METER
PIPE
7890
FUNC ESC
ENTER
OUTPUT DAMP ZERO
FLOW SW
456
TOTAL CUT OFF DISP
STATUS
123
CAL SYSTEM CHECK
Description of key (1/2)
Name
Ten-keys
ENTER
,
,
ESCAPE (Stop)
FUNC. (Function)
Key display
0 to 9 , • , ±
ENTER
,
,
ESC
FUNC
Description
To enter data and numeric values of piping specifications.
By pressing this key, numeric data and selected interac-
tive items are set. In the interactive mode, questions are
displayed.
To move the cursor to correct numeric values.
Pressing the key allows the cursor to be moved the
left.
Pressing the key allows the cursor to be moved the
right.
Select the menu item display in an interactive message.
Pressing the key allows the menu page to advance.
Pressing the key allows the menu page return.
To stop interactive operation.
To perform the function inscribed on each ten-key.

10
Key display
/pi
FUNC PIPE
FUNC
OUTPUT
FUNC
DAMP
FUNC ZERO
FUNC DISP
FUNC
CUT OFF
FUNC
TOTAL
FUNC
FLOW SW
FUNC
STATUS
FUNC CAL
FUNC
SYSTEM
FUNC CHECK
Description of key (2/2)
Name
PIPE (Pipe)
OUTPUT
(Analog output)
DAMPING
(Damping)
ZERO (Zero)
DISPLAY
(Display panel)
CUT OFF
(Low flow cut)
TOTAL
(Integration)
FLOW SW
(Flow switch)
STATUS
(Status)
CAL.
(Calibration)
SYSTEM
(System)
CHECK (Check)
Description
By pressing this key, the circumstance of pipe, which has
been entered, is converted into the outside diameter.
(valid only when setting the outside diameter of pipe)
To enter the size and material of the sensor piping.
To set the condition of an analog output
(units, range, limit, burn-out)
To set the damping.
To use when zero adjustment is performed.
Keys used to change items or unit system on the measure-
ment display screen.
To set the low flow cut.
To set condition required for integration of flow rate.
(units, constant, preset value, integral switch, pulse width)
To set the measured high/low value switch
To set condition of status output (integration pulse, mea-
suring status)
To compensate indication values of zero point and 100%
point. (Current output is effected)
To switch the measuring unit system and language, or
confirm or calibrate analog output.
To display an error message and countermeasures when
an error appears.
(An error message is displayed on the upper-right of the
LCD.)
/pi

11
5.3 List of setting items
Measurement screen Piping specifications-----------------------------------See Item 5.4 (1)
( FUNC PIPE )
Setting of output Range------------------------See Item 5.4 (2)
( FUNC OUTPUT ) Output limit-----------------See Item 5.4 (3)
Burn-out---------------------See Item 5.4 (4)
Damping-------------------------------------------------See Item 5.4 (5)
( FUNC DAMP )
Zero adjustment ----------------------------------------See Item 5.4 (6)
( FUNC ZERO )
Display setting------------------------------------------See Item 5.4 (7)
( FUNC DISP )
Low flow cut--------------------------------------------See Item 5.4 (8)
( FUNC CUT OFF )
Integration
Integration unit and constant ----- See Item 5.4 (9)
( FUNC TOTAL ) Integral preset --------------See Item 5.4 (10)
Integral switch -------------See Item 5.4 (11)
Integral pulse width -------See Item 5.4 (12)
Flow switch ---------------------------------------------See Item 5.4 (13)
( FUNC FLOW SW )
Status output --------------------------------------------See Item 5.4 (14)
( FUNC STATUS )
Output compensation ----------------------------------See Item 5.4 (15)
( FUNC CAL )
System Measuring unit ------------ See Item 5.4 (16)
( FUNC SYSTEM ) Switch of language ------- See Item 5.4 (17)
Confirmation analog outpu t--- See Item 5.4 (18)
Analog output calibration ----- See Item 5.4 (19)
Status output check ------- See Item 5.4 (20)
Test mode ------------------ See Iitem 5.4 (21)

12
5.4 Setting of parameters
• Units are displayed in metric system.
5.4 (1) Setting of piping specifications
Description
Set the data of pipe required for measurement. The mounting dimension of the sensor is
automatically calculated. Data of each item should be entered according to the display.
Item
Outside diameter of pipe
Material of pipe
Pipe wall thickness
Lining (with/without)
and material
Type of fluid
Dynamic viscosity
coefficient of fluid
Mounting method of
sensor
Type of sensor
Transmission voltage of
sensor
Entry
Numeric value
Selectable
Numeric value
Selectable
Selectable
Numeric value
Selectable
Selectable
Selectable
Range or menu
2 in. to 236 in.
CARBON STEEL, STAINLESS STEEL, PVC,
COPPER, CAST IRON, ALUMINUM, FRP, ASBES-
TOS, DUCTILE IRON, PEEK, PVDF, ACRYLIC,
OTHERS*1
0.0039 in. to 3.937 in.
NO LINING, TAR EPOXY, MORTAR, RUBBER,
TEFLON, PYREX GLASS, OTHERS *1
WATER, SEAWATER, OTHERS *1
0.001E
- 19.68 ft.2/s to 999.999E - 19.68 ft.2/s *2
V METHOD, Z METHOD
FLW12, FLW41, FLW50
1 TIME, 2 TIME, 4 TIME, 8 TIME
*1) Selection of “OTHERS”
Materials of piping and lining should be selected within the range of 3281 to 12,139 ft./sec.
of sound velocity and 1640 to 8202 ft./sec. of flow velocity (see Appendix).
*2) Dynamic viscosity coefficient is expressed in water (68°F: 1.004E
- 19.68 ft.2/s)
When more accurate data need be obtained or fluid other than water is selected, enter an
appropriate data as needed from Appendix.

13
Operation (example) Outside diameter:114.3mm, pipe material:carbon steel, thickness:4.5mm,
lining material:mortar, thickness:1.25mm, fluid:heavy water, sound velocity:
1388m/s, dynamic viscosity coefficient: 1.129 x 10-6m2/s, sensor mounting
method:V method, type: FLW12, Transmission voltage:8 times
Key operation
FUNC PIPE
or
1 1 4 . 3 , ENTER
or , ENTER
4 . 5 , ENTER
or , ENTER
1 . 2 5 , ENTER
or , ENTER
1 3 8 8 , ENTER
1 . 1 2 9 , ENTER
or , ENTER
or , ENTER
or , ENTER
ESC ESC
Description
The sensor mounting dimension is
displayed.
Select “OUTER DIAMETER”.
Enter “114.3” with ten keys.
Select “CARBON STEEL”.
Enter “4.5” with ten keys.
Select :MORTAR”.
Enter “1.25” with ten keys.
Select “OTHERS”.
Enter “1388” with ten keys.
Enter “1.129” with ten keys.
Select “V METHOD”.
Select “FLW12”.
SELECT “8 TIME”.
The sonsor mounting dimension is
displayed.
Press the key twice.
SENSOR SPACING
0.00 mm V
OUTER DIAMETER
114.3mm
PIPE MATERIAL
CARBON STEEL
WALL THICKNESS
4.5mm
LINING MATERIAL
MORTAR
LINING THICKNESS
1.25mm
KIND OF FLUID
OTHERS
FLUID S.V.
1388 m/s
VISCOSITY
1.129E – 6 m2/s
SENSOR MOUNTING
V METHOD
SENSOR TYPE
FLW12
TRANS. VOLTAGE
8 TIME
SENSOR SPACING
80.56 mm V
(Measurement display)
Display
Note 3) When selecting the transmission voltage, generally choose “4 TIME”.
Note 3

14
5.4 (2) Setting of analog output range
Description
An analog output range is set to provide an output of 4 to 20mA in the specified range of
measured values (flow rate or flow velocity).
[Measurement items]
1. Selection of range unit ............ m/s
l/s, l/m l/h, Ml/d
m3/s, m3/m, m3/h, Mm3/d
BBL/s, BBL/m, BBL/h, MBBL/d
2. Selection of range type
• SINGLE RANGE: Single range
• AUTO 2 RANGES: Auto 2 ranges
• BI-DIR RANGE: Auto forward/reverse range
3. Setting of range
• BASE SCALE: Set flow rate value or flow velocity value for 4mA output.
Flow velocity value should be set within the range of 0 to ±32m/s.
• FULL SCALE: Set flow rate value or flow velocity value for 20mA output.
Flow velocity value should be set within the range of ±0.3 to ±32m/s.
4. Setting of hysteresis
When selecting “AUTO 2 RANGES” or “BI-DIR.RANGE” from the type of range,
hysteresis is selectable.
Set the hysteresis within the range of 0 to 20% of full scale.
• In case of auto 2-range: Hysteresis of span size of full-scale 1 or full-scale 2, whichever
is smaller
• In case of forward/reverse range: Hysteresis of span in action range
Note 1) Flow units of low flow cut, flow switch and output compensation flow units
are changed with the selection of the range unit.
Analog output
Single range
20mA
4mA
BASE
SCALE FULL SCALE
Flow rate
Analog output
Auto 2 range
20mA
4mA
BASE
SCALE FULL SCALE1
Flow rate
FULL
SCALE2
Hysteresis setting
Analog output
Auto range, forward/reverse range
20mA
4mA
FULL
SCALE2 FULL
SCALE1
Hysteresis setting
BASE SCALE
Note 1) Choose any of
the unit: METRIC system