Fuji Electric Time Delta S Operating Manual

Instruction Manual

ULTRASONIC FLOWMETER

TYPE: FLV

FLW

ULTRASONIC FLOW METER

Fuji Electric Co.,Ltd.

INF-TN2FLVa-E

PREFACE

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

Fuji Electric Co.,Ltd.

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.

i

© Fuji Electric Co., Ltd. 1998

Issued in July, 1998

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
Type

Output DC4–20mA
Power Supply

AC100–240V 50/60Hz
DC20–30V

Ser. No.

Fuji Electric Co.,Ltd.

Mfd.

Made in Japan

Ultrasonic
Flow Meter

Type

No.

FL

Fuji Electric Co., Ltd.

T19

Converter

Ultrasonic Flow Meter

Type.
Ser. No.
Mfd.

Fuji Electric Co.,Ltd.

Small type sensor

T

TK773792

Type FLW
M f d. 199 Fujielectric Co., Ltd

Large type sensor

Ser. No. T

High temperature sensor

ii

CAUTION ON SAFETY

• 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

DANGER

CAUTION

DANGER

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

• Install the flowmeter according to the instruction manual.

CAUTION

• When installing, make sure that the flowmeter interior is free

• Connect a power source of correct rating to prevent fire acci-

• Before making wiring work, be sure to turn OFF the power

• Use wiring materials of correct rating to prevent fire accidents.

operating conditions shown in this instruction manual.
Installation at an unsuited place may cause electric shock, fire or

incorrect operation.

Improper installation may lead to the cause of fall, trouble or
incorrect operation.

from cable chips and other foreign objects to prevent fire,
trouble, or incorrect operation.

dents.

supply to prevent electric shocks.

iii

CONTENTS

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

iv

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

v

1. OPERATING PARTS AND THEIR FUNCTIONS

The names and funcitons of parts of the converter are as follows.

Names of parts of converter

2

ULTRASONIC FLOW METER

PIPE

OUTPUT DAMP ZERO

7890

FLOW SW

6

TR-out1

TR-out2

I-out

2345

Green

DOWN STRUP STR

6 7

10

Confirm converter power specifications

GND8HF9GND
SH SH

Green

before connecting.

HF

Black

AC100–240V

White

White

Black

To Downstream SensorTo Upstream Sensor

DC20–30V

1

1

23

23

LN

Analog Output

1

Total or Status Output
(Transister)

TOTAL CUT OFF DISP

456

STATUS

CAL SYSTEM CHECK

123

FUNK

54

ESC

ENTER

3

1

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.

4

Main 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.

1

2. MOUNTING OF CONVERTER

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.

9.45" 9.45"

Fig. 2-1 Installation space (top view)

O

23" or more

N

E

P

4"

or more

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.

312

12.28"

Top

Bottom

2.83"

4-M8

312

12.28"

Fig. 2-2 Mounting method

M8 bolt

In case of 2B pipe standing type, use U bolts (M8) on the market.

2

2.3 Outline diagram (unit: in.)

.08-ø.35"

.79"

8.66"

12.28"

10.91"

1/8" 3.75"

.55"

2.83"

9.06"

Sensor

Name plate

3.15"

2.36"

(50A to 250A)

Mounting Dimensions

(0 to 9.85)

Mounting dimensions

(0 to 250)

510

20.08"

72

2.83"

Pipe

Frame end

Ground terminal

3.66"

Sensor unit

1.54"

Converter FLV

104

4.09"

Wire rope

Mounting spring

62

2.44"

1.57" 1.57" 1.57" 1.57"

Scale (inch)

4.49"

Cursor

ø.75"

Sensor FLW1 (small type sensor)

Scale (mm)

Mounting dimensions 0 to 13.0"

Mounting dimensions 0 to 330

ø1.02"

Element holder

1.57"

Saddle

BNC connector

Locking unit

33 33

1.3"

8.07"

Chain & spring

20.87"

1.3"

3.54"

530

Sensor FLW5 (large type sensor)

Sensor FLD32 (high temperature sensor)

2"

3

3. WIRING OF THE CONVERTER

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,

2

Nominal sectional area : 0.30 in.
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.

or more,

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.

4

3.4 Wiring to terminals

Cables should be connected as shown in the following diagrams.

ULTRASONIC FLOW METER

PIPE

OUTPUT DAMP ZERO

7890

FLOW SW

TOTAL CUT OFF DISP

456

STATUS

CAL SYSTEM CHECK

123

FUNK

ESC

ENTER

(Note 1) Case grounding terminal

I-out

TR-out TR-out2

1 23456 7

AC power

AC power terminal

1AC23
LN

Power board terminal block

100 to 240V AC

M4 screw

DOW STRUP STR

10

GND8HF9GND

HF

SH SH

DC power

DC power terminal

1DC23

20 to 30V DC

M4 screw(Note 1)

Black

White

Green

White

Main board teminal block

Total/status output
(transister contact)

Green

Black

To sensor on
the up stream side

To sensor on the

Analog output signal

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)

5

4. OPERATION AND WORKS

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.

}

6

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 DI NGA

Stab l iityWit!a

Measuring screen

000.0m/ Rs
.0000m/s3

Flow display (See Item 5.4 (7))

Flow direction

If the upstream and downstream sensors are connected reversely,
a symbol "—" appears on the LCD.

Load parameters and data from
non-volatile memory

Preparation to be taken until the measuring
conditions are met.

Display of integration, flow velocity and range %
(See Item 5.4 (7))

Status display (See Item 7.1. (1))

7

5. SETTING OF PARAMETERS

5.1 Outline of operating procedures

Proceed to the following procedure before starting measurements.

Chapter 3

Chapter 4 Power ON

5.4 (1)

Chapter 8 Installation of sensor

5.4 (6)

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

Installation and wiring

of converter

Check of piping

specification

OK

Measurement error

Measurement OK

Zero adjustment

NG

5.4 (1)

Chapter 7 Troubleshooting

Input of piping

specification

Measurement

Chapter 6 Maintenance and check

8

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

OUTPUT DAMP ZERO

7890

FLOW SW

STATUS

TOTAL CUT OFF DISP

456

CAL SYSTEM CHECK

123

Description of key (1/2)

FUNC

ESC

ENTER

Name
Ten-keys
ENTER

,

,

ESCAPE (Stop)

Key display

0 to 9 , • , ±
ENTER

,

,

ESC

Description
To enter data and numeric values of piping specifications.
By pressing this key, numeric data and selected interac­tive 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.

FUNC. (Function)

FUNC

To perform the function inscribed on each ten-key.

9

Description of key (2/2)

Name

/pi

PIPE (Pipe)
OUTPUT
(Analog output)
DAMPING
(Damping)
ZERO (Zero)
DISPLAY
(Display panel)
CUT OFF
(Low flow cut)
TOTAL
(Integration)
FLOW SW

Key display

/pi

FUNC PIPE
FUNC
OUTPUT
FUNC
DAMP
FUNC ZERO
FUNC DISP

FUNC
CUT OFF
FUNC
TOTAL
FUNC

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 measure­ment 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

(Flow switch)
STATUS
(Status)
CAL.
(Calibration)
SYSTEM
(System)
CHECK (Check)

FLOW SW
FUNC
STATUS
FUNC CAL

FUNC
SYSTEM
FUNC CHECK

To set condition of status output (integration pulse, mea­suring 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.)

10

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
( FUNC TOTAL ) Integral preset -------------- See Item 5.4 (10)

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)

Integration unit and constant -----

Integral switch -------------See Item 5.4 (11)
Integral pulse width -------See Item 5.4 (12)

Confirmation analog outpu
Analog output calibration ----­Status output check ------- See Item 5.4 (20)
Test mode ------------------ See Iitem 5.4 (21)

See Item 5.4 (9)

t---

See Item 5.4 (18)
See Item 5.4 (19)

11

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

*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

When more accurate data need be obtained or fluid other than water is selected, enter an
appropriate data as needed from Appendix.

Numeric value
Selectable

Numeric value
Selectable

Selectable
Numeric value

Selectable

Selectable
Selectable

Entry

Range or menu
2 in. to 236 in.
CARBON STEEL, STAINLESS STEEL, PVC,
COPPER, CAST IRON, ALUMINUM, FRP, ASBES­TOS, 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

V METHOD, Z METHOD

FLW12, FLW41, FLW50
1 TIME, 2 TIME, 4 TIME, 8 TIME

19.68 ft.2/s to 999.999E-19.68 ft.2/s *2

-

19.68 ft.2/s)

12

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
method:V method, type: FLW12, Transmission voltage:8 times

-6m2

/s, sensor mounting

Key operation
FUNC PIPE

or

1 1 4 . 3 , ENTER

or , ENTER

4 . 5 , ENTER

or , ENTER

1 . 2 5 , ENTER

or , ENTER

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”.

Display

SENSOR SPACING

0.00 mm V

OUTER DIAMETER

3mm

114.

PIPE MATERIAL
CARBON STEEL

WALL THICKNESS

5mm

4.

LINING MATERIAL

MORTAR

LINING THICKNESS

5mm

1.2

KIND OF FLUID

OTHERS

1

3 8 8 , ENTER

1 . 1 2 9 , ENTER

or , ENTER

or , ENTER

Note 3

or , ENTER

ESC ESC

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.

FLUID S.V.

8 m/s

138

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)

Note 3) When selecting the transmission voltage, generally choose “4 TIME”.

13

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

Note 1)

l/s, l/m l/h, Ml/d

3

/s, m3/m, m3/h, Mm3/d

m
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

Choose any of

the unit: METRIC system

Single range

Analog output

20mA

4mA

BASE

SCALE

FULL

SCALE

3. Setting of range

• BASE SCALE: Set flow rate value or flow velocity value for 4mA output.

• FULL SCALE: Set flow rate value or flow velocity value for 20mA output.

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

• 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

Analog output

20mA

Flow rate

4mA

BASE

SCALE

Auto 2 range

FULL
SCALE1

Hysteresis setting

Flow rate

FULL
SCALE2

Auto range, forward/reverse range

Analog output

20mA

4mA

FULL

SCALE2

BASE SCALE

Flow velocity value should be set within the range of 0 to ±32m/s.

Flow velocity value should be set within the range of ±0.3 to ±32m/s.

is smaller

are changed with the selection of the range unit.

FULL
SCALE1

Hysteresis setting

14

Operation (example) When setting the base scale to 0m3/h, full scale 1 to 100m3/h, full scale 2 to –

100m3/h and hysteresis to 5% in the forward/reverse range.

Key operation
FUNC OUTPUT

or , ENTER

or , ENTER

0 , ENTER

1 0 0 , ENTER

± 1 0 0 , ENTER

5 , ENTER

Description

Select “m3/h”.

Select “Forward/reverse range”.

Enter “0” with ten keys.

Enter “100” with ten keys.

Enter “–100” with ten keys.

Enter “5” with ten keys.

Display

RANGE UNIT

RANGE TYPE

BI-DIR. RANGE

BASE SCALE

0 m3/h

FULL SCALE 1

0 m3/h

10

FULL SCALE 2

0 m3/h

–10

RANGE HYSTERESIS

5%

m3/h

ESC ESC

Press the key twice.

(Measurement display)

15

5.4 (3) Setting of analog output limit

Description

Set the high/low limits within the range of analog output of 0.8 to 23.2mA (

-

20 to 120%).

Low limit

Analog output

23.2mA
20mA

4mA

-20%

0% 100% 120%

0.8mA

High limit

Flow rate

Operation (example) Low limit : -10% (2.4mA), high limit : 110% (21.6mA)

Key operation

Description

FUNC OUTPUT

or

± 1 0 , ENTER

1 1 0 , ENTER

Select “Output limitter”.

Enter “–10”with ten keys.

Enter “110” with ten keys.

OUTPUT LIMIT
LOW – 20 %

OUTPUT LIMIT
LOW – 1

OUTPUT LIMIT
HIGH 11

Display

0 %

0 %

ESC ESC

• In case of auto 2-range :

• In case of forward/reverse range :

Press the key twice.

(Measurement display)

Low limit is limited to the small range, and High limit is limited to the large range.

The low/high limits are limited to the range of action.

(100%)20mA

(0%) 4mA

Base
scale

Auto 2 range

Full
scale 1

High limit

Full
scale 2

16

5.4 (4) Setting of burn-out

Description

When the pipe is empty of fluid or when air bubbles are contained in fluid, the flow rate can
not be measured correctly. In such a case, the analog output needs to be set to “HOLD”,
“HIGH” limit or “LOW” limit. A burnout timer is used to set the time needed for burnout.

(Setting items)

• HOLD : Measured value is held

• HIGH : 120%t output (23.2mA) is obtained.

-

• LOW :

• Zero : 0 % output (4.0mA) is obtained.

• NOT USED : Not used.

• Liquid crystal display : Measured value is held.

• Integrated pulse output : Output stops Note)

• Internal integration : Integration stops Note)
Note) Integrated pulse output and internal integration is integrated until the burnout timer is

energized.

20% output (0.8mA) is obtained.

Operation (example) When setting the burnout to the “LOW” limit and burnout timer to 15

seconds.

Key operation

Description

Display

FUNC OUTPUT

or

or , ENTER

1 5 , ENTER

ESC ESC

Select “Burn-out”.

Select “Low limit”.

Enter “15” with ten keys.

Press the key twice.

OUTPUT BURNOUT

NOT USED

OUTPUT BURNOUT

BURNOUT TIMER

(Measurement display)

LOWER

15 sec

17

5.4 (5) Setting of damping

Description

Damping is used to suppress fluctuation of measured values.
The set value is a time constant (about 63% response time). (Setting range : 0 to 100 sec)

63%

Flow rate

Response time

Time

Unless otherwise specified in the order sheet, the setting time of damping is adjusted to 5 sec.

Operation (example) Change of set value to 20 sec.

Key operation

Description
FUNC DAMP
2 0 , ENTER

Enter “20” with ten keys.

DAMPING

(Measurement display)

Display

0 sec

2

18