202307

Ultrasonic Flow Meter forManagement of Fuel Gas
ATZTA UX/UZ
Model：UX15 UX25
Operation ManualInstruction Manual for High-performance UltrasonicFlowmeter for Fuel Gas UX15/25● Table of Contents○ Attention○ Product outline○ Important information ············································· 2○ or safe and proper use ············································ 21.

Introduction ··························································· 5
1-1. Confirmation of package contents
1-2. Battery connection in the built-in battery specification
1-3. Name of each part
2. Model composition ················································· 8
3. Specifications ························································ 8
4. Outline drawing ······················································ 11
5. Installation procedure ············································· 12
6. Connection ···························································· 13
7. Setting of flow meter ··············································· 21
8. Display operation instructions ································· 25
9. Start-up procedure ·················································· 36
10. Alarm indication ····················································· 36
11. Treatment at power failure [24VDC specification] ······· 38
12. Battery life [Built-in battery type] ······························ 38
13. Troubleshooting ····················································· 39
Warranty and after-sale service ································ Back cover○Contact information

Back cover○ Attention
Thank you for choosing our High-performance Ultrasonic Flowmeter for Fuel Gas UX15/25.
Please be sure to read this manual to use the product safely and prevent accidents.
Please arrange for this manual to be delivered without fail to those who use the product. Thismanual is also necessary for maintenance of the product. Please keep this manual carefully
until the product is discarded.
○ Product outline
This product is a supersonic type flow meter for fuel gas, capable of measuring flow rate ina range from an atmospheric pressure to 100 kPa. To connect the product to the pipe, screw
in a taper pipe thread.
1

○ Important information
This section provides precautions for safe and proper use of this product with thefollowing pictograms.
Structure of warning indications

Danger

Incorrect handling by ignoring the instructions of this symbol may lead to imminent
danger of death or serious injury.
Incorrect handling by ignoring the instructions of this symbol may lead to death or

Warning serious injury.
CautionIncorrect handling by ignoring the instructions of this symbol may lead to personal
injury or physical damage (product failure, etc.).
Improper operation may result in an accident.
Prohibited acts.
Matters that must be strictly observed.

○ For safe and proper use
Precautions for use
1. Do not use the product for applications that require safety, such as nuclear
application, railroads, aircrafts, vehicles, and playground equipment.
2. Do not modify the product.
3. Do not use the product for foods, drinks, medical chemicals, etc. since it is notdesigned to sanitary specifications.
Danger

4. Do not use the product in the atmosphere of an inflammable gas, etc., because it is notdesigned for explosion-proof specifications. The meters do not conform to ATEX
(explosion-proof) directive (2014/34/EU).

Working environment and applicable fluid
1. Do not flow any gas other than city gas (13A), propane, butane, and nitrogenthrough the product.
2. Observe the temperature and humidity ranges (-10 to +60°C, 90%RH orlower) and pressure range (atmospheric pressure to not more than 100 kPa)
when using the product.
3. Avoid using the product or applying it to a fluid in an atmosphere containing a
corrosive gas (chlorine, hydrogen sulfide, etc.).
4. This product does not have a complete waterproof structure (IP64). Do notinstall it at a place that may be submerged in water.
5. Install the product as far away from a noise source as possible. If it is installednear a noise source, use shielded lines for the cable connected to the flow
meter. In such a case, ground the shielded line to FG other than the flow meter.

Caution6.

Installation of a sunshade is recommended if the product is exposed to direct
sunlight.

7.

When the product is used with propane or butane, use it under the conditions
that avoid the oil mist condition due to reliquefaction, etc. Attachment of oil
mist to the inner side of the flow meter may cause abnormality to flow ratemeasurement and result in failure of accurate measurement.
2

8.

The product may not meet the accuracy of specifications in a pulsating
environment. Installation in area with less pulsation is recommended.

Cautions for operation
1. This flow meter is not a specified measuring instrument defined by theJapanese Measurement Law.

CautionStorage

1. Store the product at a place away from fire and not exposed to direct sunlight.
2. Do not place any combustible material, inflammable substance, or heating unit
around the product.
Caution

3. Store the productr at a place where ambient temperature is -20 to +70°C andno dew condensation occurs.

Piping
1. Do not use the product as a foothold or climb on it.

Warning

1. When installing the product to a new pipe, clean the pipe well before
installation.
2. Vertical piping is recommended when oil mist, dust, etc. are contained in alarge amount. Note that when installing the product outdoors, it must not be
installed with "display facing downward" or "cable inlet facing upward." Even
when installing the product indoors, prevent water from coming into the
product through the cable inlet.

Caution正○ Correct

正○ Correct

×Wrong誤正○ Correct

正○ Correct

×Wrong誤3. Do not install the product at a location where strong load, such as compressive
force or tensile force, may be applied after installation.
4.
5.

Install the product along with the flow direction indicated on the product.
Do not drop the product, hit it, or apply excessive impact.
3

Wiring
1. When performing wiring, follow the instructions in this Manual.
2. Use the product within the rating.
exceeding permissible load.

DangerDo not use the product at a voltage

1.

Do not array wiring together with power supply lines or power lines, etc. of2.

other equipment.
For receiver instruments, electrical isolation from other others is3.

recommended.
Do not pull forcibly the cables connected to the terminal Junction block.

4.

Ensure that the tip of the cable connected to the terminal block is not soaked
in water during wiring work, etc.
5. When connecting the power supply to the terminal block, be careful not toshort-circuit it.Use an external power supply having a short-circuit protecting
function.
6. Be sure to interrupt the supply of external power while performing wiring.
7. Do not perform operation or wiring with wet hands.
8. For the external power specification (24VDC, 100VAC), provide a power
supply switch to the power system that supplies electricity to this product inorder to prevent electrical shock in connection to the power supply terminal

Cautionor removal.
9. For the external power specification (24VDC), choose the 0V terminal whengrounding the power source. Do not ground the 24V (+) terminal since thehousing is electrically conduct with SG (0V) and short circuit occurs to the
FG terminal of the user's device if the 24V (+) terminal is grounded.
10. For the external power specification (100VAC), do not connect the earth wireof the cable to the flow meter.
11. For the external power specification (24VDC, 100VAC), do not ground theplus of the analog output line. Since the housing is electrically conduct withSG (0V), if plus of the analog output line is grounded, a current loop thatbypasses current output is formed and analog output is not correctly
delivered.

Disassembly and inspection
1. Do not disassemble the product.
2.
CautionWhen fluid flow is normal, the pilot lamp will blink. If it does not blink, pleasecontact our branch or sales office nearby.

Disposal
1. Never dispose of this product through the normal disposal route since it hasa built-in lithium ion battery.[Built-in battery type]Warning

2. Never throw the product into fire. Otherwise, it may catch fire or explode.

4

1. Introduction
1-1. Confirmation of package contents
Upon delivery of the product, confirm that the following items are contained in the
package.
Name

Quantity

Ultrasonic flowmeter

1

Instruction Manual (this1Remarks

document)

1-2. Battery connection in the built-in battery specification
Battery is not connected upon shipping in the built-in battery specification. Connect thebattery connector correctly as described below before use.

● Connection of battery connector
1) Loosen the screws of the display at 4 positions to open the cover.
(The screws are drop-out prevention screws, which cannot be removed from the cover.)Thread (M4 x 4 positions)2) Connect the battery connector and fix it to the hook of the battery pack.

Connect the battery
connector.

Arrange the lead wire as shown in thephoto so that it may not be caught by thecover.

Note: Failure to fix the connector may lead to breakdown.
5

Fix the connector to thehook of the battery pack.

3) Check that gasket is not off the gasket groove and then close the cover.
Close the cover carefully so that the earth wire and the lead wire of the battery
connector may not be caught by the cover.
Lead wire of thebattery connector

A

Earth wire
GasketArrow A×Wrong○ Correct○ Correct
Nothing caught

Same height.

×WrongGasketGasket is off the gasket groove andfloating.

Lead wire caught

4) Tighten the screws of the display at 4 positions.
Recommended tightening torque: 1.0±0.1 N-m
Note: Be careful about insufficient tightening or tightening with excessive torque,which may lead to water leakage or pipe breakage.
Thread (M4 x 4 positions)[Battery life and replacement]
The life of the built-in battery is 5 years. (at the environment temperature of 20 C. The
battery life fluctuates depending on the temperature of the installation environment.)* For battery replacement, contact our branch or sales office nearby.

61-3. Name of each part
[Flow Meter, Main unit]
Specification name plate

Display
Drop-out prevention screw(4 positions)

Cable inlet
See page 14.

Arrow (showing the flow
direction of fluid)
Measuring part

Outlet

Inlet

Refer to pp. 36-38 for types of emergency alarm.

[Display]

Abnormal ultrasonicmeasurement.

Abnormaltemperature

Abnormalexternal memory

Battery replacement alarm(built-in battery
specification)

Integrated value
Instantaneous
value

Pilot lamp
Center
ButtonLeft Button

Right Button

Refer to pp. 25, 32-35 for button operation.

7

2.

Model composition

Basic
Diameter
model
UX
15
25

-

Pressure
sensorPower
supply-Flowdirection

-

Gas
type

0
BT
DC
AC
L
R
13A
PRO
BTN
N2

Description
UX
15A
25A
No pressure sensor
Battery (lithium battery) type
24VDC type
100VAC type
From left to right
From right to left
13A
PropaneButaneNitrogen3. Specifications
Model

UX15(25)-0DC

UX15(25)-0AC

UX15(25)-0BT

Power source

External power source
24VDC

External power source
100VAC

Dedicated lithium battery

Taper pipe thread (screw in)
15A:Rc1/2 25A:Rc1

Connection diameter
Types of gases to bemeasured
Fluid temperature andhumidity
Flow rate range(actual flow rate) *1

City gas (13A), butane (butane 70% and propane 30%),
Propane (propane 98% and butane 2%), nitrogen-10 to +60°C(No dew condensation)

0.12-6 m3/h

Flow rate

0.12-0.6 m3/h:±0.5%FS
0.6-6 m3/h:±2%RD

Temperature±1.5°CAccur
acy

Low flow cut

Within 0.024 m3/h

Working pressure0 - 100 kPa (gauge pressure)Pressure loss

Max. 200 Pa (city gas 13A, standard atmospheric pressure +2.5 kPa, 6m3/h)

Rated voltage

21.6-26.4VDC

85-115VAC

Power consumption

Max 2W(Voltage: 26.4V, current
output: 22 mA)

Max. 10W(when current output is 22
mA)

Working environmental
temperature-10 to +60 °C, max 90%RH (No dew condensation)8ModelCurrent output
Output

Pulse output
Alarm output
Communication *2)
Measurement interval
Integrated flowrate
Instantaneous
flow rate
IndicaTemperaturetion
Set pressure
Alarm
Mounting attitude *3

Conversion function *4

UX15(25)-0DC

UX15(25)-0AC

UX15(25)-0BT

4-20 mA current output (±0.5%FS)
Select "Instantaneous flow rate" and "Temperature" byswitching the button
Zero output
4 mA (reverse current - lowcurrent
cut-off)
Instanta Min. output
4 mA(clip at 4 mA)current
neous
flow rate Max. output
22 mA (clip at 22 mA)current
Full-scale flow rate: Set up with the button.
Refer to Table 7-1 (p. 21).for factory
shipment settings
Type of
4mA:-10°C, 20mA:+60°C
outputTempera Min. output
2 mA (clip at 2 mA)turecurrent
Max. output
22 mA (clip at 22 mA)current
Nch open drain output, duty: 20 to 80%, maximum load:50 mA (at 24VDC)
Flow rate high upper/low
Flow rate high upper/low limit alarm or Integrated
limit alarm orvalue upper limit alarm
battery replacementalarm
Conforming to RS485 Modbus/RTU.
0.5 sec
2 sec
Integrated flow rate : 00000000.00 m3 (10 digits)
Trip integrated flow rate: 0000000.00 m3 (9 digits)
000.00 m3/h (5 digits)
00.0 °C (3 digits)
000.00 kPa (5 digits)
Abnormal ultrasonic measurement: Ultrasonic signal is small or no signal is received.
Abnormal temperature measurement: Failure of the temperature sensor
Battery replacement alarm: Fall in the battery voltage [built-in battery specification].
Horizontal, perpendicularSimple normal conversion flow rate
Flow rate converted to 0°C, 1 atmosphere from actual flow rate, measured
temperature, and set pressure.
Simple standard conversion flow rate

Volume flow rate obtained by converting actual flow rate to the conversion
standard temperature and pressure from measured temperature and set
pressure.

Conversion accuracy±1.5%RDGas contact material
Body of the flow meter: Aluminum alloy, PPS, fluorosilicone rubber, etc.
Mass
1.8 kg
1.6 kg
1.7 kg
Location of installation *5)
Indoors, outdoors (supporting IP64)

OthersCE marking,
UKCA marking,
RoHS Directive compliant

RoHS Directive compliant

CE marking,
UKCA marking,
RoHS Directive compliant*1) Refer to Table 3-1 and Table 3-2 (p. 10) for the range of conversion flow rate.
*2) For detailed specifications, download from our company's web site.
Product website: http://www.aichitokei.co.jp/products/14_s_sonic/ux/*3) Refer to page 12 for the mounting attitude.
*4) The conversion standard temperature (-10 to +60 °C) and conversion standard pressure (0.00 - 10.00
kPa) can be changed by button and communication (only for external power source specification).
*5) Installation of a sunshade is recommended if the product is exposed to direct sunlight.

9■

Definitions of the terms used in the specifications
Actual flow rate-

Volume of the fluid flowing during unit time. Actual flow rate will change according to
the temperature and pressure of fluid, the flow rate unit is m3/h.
-

Simple □□□ conversion flow rate
This flow meter is not provided with pressure sensor. This represents conversion ofpressure value with given value (fixed value)
Normal converted flow rate-

Volume flow rate obtained by converting actual flow rate to 0C, 1 atm from measured
temperature and set pressure. The flow rate unit is m3/h (Normal).
-Standard conversion flow rate
Volume flow rate obtained by converting actual flow rate to the conversion standard
temperature and pressure from measured temperature and set pressure. The flow rate
unit is m3/h (Standard).
The conversion standard temperature (-10 to +60 C) and conversion standard
pressure (0.00 - 10.00 kPa) can be changed by button and communication (only forexternal power source specification).

Table 3-1. - Normal conversion flow rate value [m3/h] (Normal)] [Example of conversion]
Pressure (kPa)
Temperature (°C)
0.12(m3/h
Actual)flow rate
6(m3/h)0 (atmosphericpressure)
0
30

0

30

0

30

0

30

0.12

0.11

0.12

0.11

0.13

0.12

0.24

0.21

6.00

5.41

6.12

5.51

6.59

5.94

11.92

10.74

2

10

100

Conversion standard temperature = 0 C, Conversion standard pressure =0 kPa (gaugepressure)
Table 3-2. Standard conversion flow rate value [m3/h] (Standard] [Example of conversion]
Pressure (kPa)
Temperature (°C)
0.12(m3/h
Actual)flow rate
6(m3/h)0 (atmosphericpressure)
0
30

0

30

0

30

0

30

0.13

0.11

0.13

0.12

0.14

0.13

0.25

0.23

6.31

5.69

6.44

5.80

6.94

6.25

12.55

11.30

2

10

100

Conversion standard temperature = 20 C, Conversion standard pressure =2 kPa (gaugepressure)

Pressure loss
450

400

400

350

350

Pressureloss (Pa)
圧力損失（Pa）

圧力損失（Pa）
Pressureloss (Pa)

■

300
250
200
150
100
50

300
250
200
150
100
50

0
0

13A

1

2

3

4

3/h） 3
流量（m
Flow
rate
(m /h)
PropaneButane
プロパン
ブタン

5

6

Nitrogen
窒素

Graph. Pressure loss 15A

0
0

13A

1

2

3

4

Flow
rate
(m3/h)
3/h）
流量（mPropaneButaneプロパン
ブタン

5Graph. Pressure loss 25A
10

6

窒素
Nitrogen4. Outline drawing

Unit: mm
W

H

D

195

142

62

Fig 4-1. Outline drawing

11

5. Installation procedure
Recommended to perform setting operation (p. 28) before installation.
1)
2)

The direct flow direction of the fluid must accord with the arrow of the body.
This product may be installed either indoors or outdoors and either to horizontal orvertical pipes.
Note that when installing the product outdoors, it must not be installed with "display
facing downward" or "cable inlet facing upward." Even when installing the productindoors, prevent water from coming into the product through the cable inlet.

* Vertical piping is recommended when oil mist, dust, etc. are contained in a large
amount.

正○ Correct

正○ Correct

×Wrong誤正○ Correct

正○ Correct

×Wrong誤3)This product does not have a complete waterproof structure (IP64). Do not install it at
a place that may be submerged in water.

4)5)

Installation of a sunshade is recommended if the product is exposed to direct sunlight.
Screw in the taper pipe thread within the following torque range.
UX15: 25-30 N-m
UX25: 45-50 N-m

6)

Be careful about to prevent entry of foreign matter in piping, such as welding tip, dust,
sealing tape, or sealing compound.

7)

When installing the product to a new pipe, clean the pipe well before installation.
Do not install the product at a location where strong load, such as compressive force

8)

or tensile force, may be applied after installation.
Do not drop the product, hit it, or apply excessive impact.

12

6. Connection
Enter each cable into display in accordance with this procedure when connecting the cablefor external output or connecting the cable for external power supply input in the 24VDC /100VAC specifications.
The main body and GND are electrically common.
Use an isolated power supply or externally connected equipment as necessary.
Note: For connection of externally connected equipment, follow the instruction manual ofeach equipment.

[Reference] Maximum cable length: 100 m
Operating range under our internal test conditions (VCTF, 0.3sq).
Operating range may vary according to the conditions, such as installation
environment, connected equipment, and wire types. Be careful that longcables may cause signal attenuation or facilitate superimposition of noise.
■ Procedure
1) Loosen the screws of the display at 4 positions to open the cover. Note that thescrews are drop-out prevention screws, which cannot be removed from the cover.
Thread (M4 x 4 positions)

The cover-open condition varies as follow according to the specifications of each power
supply.

24VDC specification

100VAC specification

13

Built-in battery specification

2)

Connect the cable.
■ Procedure concerning cable connection for external output(When not connecting cable for external output, the procedure (1) - (4) are notrequired.)

Adaptive cable size: φ4-6.8mm (Ex.: VCTF, 0.3 sq, 3/c - 8/c)
Terminal block: M3
When installing the flow meter around a noise source, use the shielded type for cables connected to theterminal block and ground the shield.

(1) Loosen the seal nut of the cable inlet for external output, and remove the pin.
Be careful not to loosen the lock nut accidentally.

Lock nut

Seal nut

Pin(2) Pass the cable through the cable inlet.

External output cable14(3) Connect the cable entered into the case to the terminal block, with the cable sheath
projecting to the inner side of the case, after crimping the crimp terminal.
Thread size: M3
Recommended tightening torque: 0.5±0.1 N-m* Be careful that wrong connection may cause failure to the product. Be carefulthat available terminal block is different according to the specifications of power
supply. (For the application of each terminal block, refer to "Terminal Connection
Diagram" attached to the reverse side of the cover or "Connection diagram ofeach power supply specification" at pages 19 and 20.)
Cable sheath projecting to theinner side of the case
Crimp the crimp terminal andconnect to the terminal block.

(4) Tighten the seal nut.
Recommended tightening torque: 1.0±0.1 N-m
If a torque wrench is not available, thoroughly tighten the seal nut manually or with atool and retighten it 90° (= 1/4 rotation) from the position where load is perceived. Avoid
further tightening. (Excessive torque may damage cables, break seal nut, seal
deformation and it may cause water leakage and so on.)15

■ Procedure concerning cable connection for external power supply input(When not connecting cable for external power supply input, the procedure (5) - (8)are not required.)
Adaptation cable size: φ6.5-12.5mm(Ex.: CV 2sq 2/c, CVV 1.25sq, 2/c)
Terminal block: M3 (for 24VDC), M4 (for 100VAC)
When installing the flow meter around a noise source, use the shielded type for cables connected to theterminal block and ground the shield.

(5) Loosen the seal nut of the cable inlet for external power supply input, and remove thepin.
Be careful not to loosen the lock nut accidentally.

Seal nut

Lock nut

Pin(6) Pass the cable through the cable inlet.

External power supply
input cable

16

(7)
Connect the cable entered into the case to the terminal block, with the cablesheath projecting to the inner side of the case, after crimping the crimp terminal.
[24VDC specification]
Thread size: M3
Recommended tightening torque: 0.5±0.1 N-m[100VAC specification]
Thread size: M4
Recommended tightening torque: 1.0±0.1 N-m
Note: Remove the cover of terminal block in connection and install it as before
after connection.

* Be careful that wrong connection may cause failure to the product. Be careful thatavailable terminal block is different according to the specifications of power supply.
(For the application of each terminal block, refer to "Terminal Connection
Diagram" attached to the reverse side of the cover or "Connection diagram ofeach power supply specification" at pages 19 and 20.)

Cable sheath projecting to theinner side of the case

Crimp the crimp terminal andconnect to the terminal block.

17

(8) Tighten the seal nut.
Recommended tightening torque: 1.5±0.1 N-m
If a torque wrench is not available, thoroughly tighten the seal nut manually or with atool and retighten it 90° (= 1/4 rotation) from the position where load is perceived. Avoid
further tightening. (Excessive torque may damage cables, break seal nut, cause
leakage etc. due to seal deformation.)3)

Check that gasket is not off the gasket groove and then close the cover.
Close the cover carefully so that the earth wire and the lead wire of the battery
connector in the case of built-in battery specification may not be caught by the cover.
Lead wire of thebattery connector
Earth wireA

GasketArrow A×Wrong○ Correct
Same height.

○ Correct

×WrongNothing caught

GasketGasket is off the gasket grooveand floating.

18

Lead wire caught

4)

Tighten the screws of the display at 4 positions.
Recommended tightening torque: 1.0±0.1 N-m
Note: Be careful about insufficient tightening or tightening with excessive torque,which may lead to water leakage or pipe breakage.
Thread (M4 x 4 positions)"Connection diagram of each power supply specification" is as follows.
For the application of each terminal block, refer to "Terminal Connection Diagram"attached to the reverse side of the cover.

ALARM OUTPUT

Pulse output
パルス出力
(Nch
open drain（Nchオープン
output)PULSE OUTPUT

GND

Load
負荷

ドレイン出力）

Load
負荷
Alarm
output警報出力(Nchopen drain（Nchオープン
output)
ドレイン出力）Figure: Connection diagram [Built-in battery specification]
N~

100V ACL

ALARM OUTPUT

PULSE OUTPUT

RS485 communication
RS485通信

RS485 B-

GND

RS485 A+

4-20mA OUTPUT

Pulse output(Nchopen drain
パルス出力（Nchオープン
output)Load
負荷

ドレイン出力）

Load
負荷

Load
負荷
output4～4-20mA
20mA出力Figure: Connection diagram [100VAC specification]
19

Alarm
output
警報出力（Nchオープン(Nchopen drain
ドレイン出力）output)24V DCALARM OUTPUT

GND

PULSE OUTPUT＋－

RS485 communication
RS485通信

RS485 B-

GND

RS485 A+

4-20mA OUTPUT

Pulse output(Nchopen drain
パルス出力
output)（Nchオープン
Load
負荷

ドレイン出力）

Load
負荷
警報出力
Alarm
output（Nchopen
オープン
(Nch
drain
ドレイン出力）output)Load
負荷4-20mAoutput4～
20mA出力Figure: Connection diagram [24VDC specification](RS485 A+)(RS485 B-)(4-20mA OUTPUT)4-20-mA
4-20mA出力
output ※１*1

output(PULSE OUTPUT) Pulse
パルス出力

Main circuit

主回路

output(ALARM OUTPUT) Alarm
警報出力

*1

Load resistance400Ω or less
※１ 負荷抵抗 400Ω以下(GND)

Figure: Input/output circuit diagram20

7. Setting of flow meter
Recommended to set the flow meter before installation.
For this product, the items shown in Table 7-1 can be set. On delivery from factory, "factory
default settings" in Table 7-1 are arranged, so that the product is available as it is. However,change the setting as necessary according to the condition of your use.
See next section "8. Description of display operation" (p. 25) for button operation andsetting procedure.
Table 7-1 Various setting items and details in setting mode
Factory default setting
Indication on
the panel

Corresponding setting item

Setting detail / range

F1

Select conversion function

on / oFFoFF

F2Conversion standard
temperature
Conversion
standard-10 to +60 [°C]

0 °C

Built-inbattery
specification

External
power supply
specification

0.00-10.00[kPa]

0.00kPa

F4

pressure
Output pulse unit

1, 10, 100, 1000, 10000[L/P]

1L/P

F5

Set pressure

0.00-100.00[kPa]

0.00kPa

F6

Select alarm output

Built-in battery specification: Battery
replacement, flow-rate upper / lower limit
External power supply specification:
Integrated value upper limit, flow-rate upper /lower limit

Flow-rate upper / lower limit

F7

Alarm output contact state

Normal open, Normal close

Normal open

F8

Alarm output lower-limit flowrate
Alarm output upper-limit flow

0.0-+9999.9[m3/h]

0000.0 [m3/h]

0.0-+9999.9[m3/h]

9999.9 [m3/h]

F3F90000.0 [m3/h]

F10

Alarm determination value
hysteresis width

0.0-+9999.9[m3/h]

F11Current output full-scale flow

0.0-+9999.9[m3/h]

6.0 [m3/h]

F12

Select current output

Instantaneous flow rate, temperature

Instantaneous
flow rate

F13

Communication bit rate

4800, 9600[bps]

9600

F14

RTU address

001-247

001

F15

Average moving times

1-16 [times]

4

F16

Select test mode time

3 min / 60 min/ No limit

3

F17

Select gas type

13A, propane, butane, nitrogen

Optional

Note 1)
When [F1] "Select conversion function" is changed, the setting value of[F4] "Output pulse unit" will change automatically to the factory shipment value(1000 [L/P]).After setting [F1], set [F4] again if necessary.
Note 2)

The gas type designated at order placement is set to the gas type.
21

Settings are roughly classified into the following three items.
1) Items related to the fluid to be used
2) Items related to measurement and indication3) Items related to output

1) Setting of items related to the fluid to be used
(1) Setting concerning gas type [F17]
Setting
concerning gas type
ガス種に関連する設定
Selectfrom "13A", "Propane",「１３Ａ」・「プロパン」・「ブタン」・"Butane"and "Nitrogen"「窒素」の選択

F17
Ｆ１7
Gas
type
ガス種

Set the type of gas to be used. No need to change this setting since the factory default
setting is made to the gas type designated at order placement.
Note that "Air" is displayed on the select screen, which is for maintenance and cannot
be selected as a gas type of this product.

(2) Setting concerning pressure [F5]
Setting
concerning pressure
圧力に関連する設定
Ｆ５F5Set設定圧力pressure

Input「設定圧力」の入力
of "Set pressure"

Set the pressure value of the environment to be used with a gauge pressure.
Ex.) The pressure value of the environment to be used is 2.00 kPa in gauge pressure:
Setting value of [F5] “2.00”

22

2)

Items related to measurement and indication
Setting concerning
measurement and indication
測定および表示に関連する設定
Select"actual flow rate" or "conversion flow rate"「実流量」または「換算流量」の選択

F1

F1conversion
Selectfunction
換算機能選択

Actualflow rate
実流量

Conversion flow
換算流量
rate

F2 Conversion
F2
standard
temperature
換算基準温度F3 Conversion
F3
standardpressure
換算基準圧力(1)

Setting of Select conversion function [F1]
Set "actual flow rate" or "conversion flow rate." When "conversion flow rate" isselected, integrated indication, instantaneous indication, and output signal are allbased on the flow rate obtained by converting them to the state set in [F2] or [F3].

(2)

Setting of conversion standard temperature [F2] and setting of conversion standard
pressure [F3]When "conversion flow rate" is selected in [F1], the standard temperature andpressure to be converted are set. If the conversion standard temperature is set to
0 °C and the conversion standard pressure is set to 0 kPa, conversion flow rate will
be normal conversion flow rate. If the conversion standard temperature is set to avalue other than 0 °C and the conversion standard pressure is set to a value otherthan 0 kPa, conversion flow rate will be standard conversion flow rate.
When "actual flow rate" is selected in [F1], setting of the conversion standard
temperature and conversion standard pressure becomes invalid.

233) Setting of items related to output
Setting concerning pressure
Set the unit of output pulse

F4
Output pulse unit

Select alarm output

F6
Select alarm output
F7
Alarm output contact state

Battery replacement alarm(only built-in battery specification)
Integrated value upper limit alarm(only external power supply
specification)
Flow rate upper / lower
limit alarm

F8
Alarm output lower-limit flow rate

F9
Alarm output upper-limit flow rate

F10
Alarm determination value
hysteresis width

Select current output(only external power supply
specification)

F12
Select current output

Instantaneous flow
rate

F11
Analog output FS flow rate

Temperature(1)

Setting of output pulse unit [F4]When pulse output is used, set the output pulse unit in advance according to use
conditions.

(2)

Setting of Select alarm output [F6]The following items can be selected in alarm output according to the power supply
specification.
Battery specification (BT): Flow-rate upper / lower limit alarm or battery
replacement alarm
External power supply specification (DC/AC): Flow-rate upper / lower limit
alarm or integrated value alarm
For the flow-rate upper / lower limit alarm output, an alarm can be outputted or
stopped with a desired flow-rate value. When this function is selected, set the alarm
output lower-limit flow rate [F8], alarm output upper-limit flow rate [F9], and alarm(3)

determination value hysteresis width [F10]Select current output [F12]Output form is selectable from the two types of instantaneous flow rate andtemperature according to the user's application. When the instantaneous flow rate
is selected, electric current corresponding to the setting of the maximum flow-ratevalue of analog output is outputted.

(4)

When the temperature is selected, 4 mA is outputted at -10°C, and 20 mA, at +60°C.
Setting of the maximum flow-rate value of analog current output (Analog output FS
flow rate) [F12]
When analog output is used by setting to instantaneous flow rate, it isrecommended to set the full scale flow-rate (FS flow rate) of the analog current
output according to the value corresponding to maximum flow rate used. Note that
it is recommended to set a value with a margin when setting FS flow rate. For
reference, examples of conversion are provided in Tablets 3-1 and 3-2 (p. 10).

8. Display operation instructions
24

A.Operation instructions
1) Normally (in the measurement mode), integrated flow rate (upper section) andinstantaneous flow rate (lower section) are indicated.
2) Various individual settings are available on the site by operating the buttons.
3) See Figure 8-1 for the arrangement of "Left Button", "Center Button", and "Right
Button."Center
ButtonLeft Button

Right Button

Fig. 8-1. Button Arrangement
4) By operating the buttons as described in Table 8-1, various modes can be selected
as shown in Figure 8-2.
Table 8-1. Button operation instructions in measurement / setting / test mode
Button title

Measurement mode
Total integration /trip
integration switching
Switch instantaneous
flow rate [m3/h] / setpressure / temperature
Switch to test mode.

Left Button
Right Button
Center Button

Setting mode
Local setting
Detailed setting
indication
Switch to next setting
Switch setting details
itemMove the blinking digit
Switch to previous
setting item.

Switch to setting mode.

L Button + R Button *1

Clear trip integration*2)

Change the value
blinking

Test mode

Release testmode

Switch to measurement mode
Switching of local setting indication and detailed
setting*1) "Left Button + Right Button" means to press both switches at the same time.
*2) Trip integrated flow rate is cleared when Left Button and Right Button are pressed together when trip integration isindicated.
計測モ ー ド mode
Measurement
Main
display
メ イン表示左ボタン
Left
ButtonForward integrated
正積算流量
flow rate
Left
Button左ボタン

サブ 表示
Sub-display

トリップ積算Tripintegrated flow
rate
流量

右ボタン
Right
ButtonInstantaneous flow
瞬時流量
rate

L左ボタン+
Button + R右ボタン/
Button / Clear
ﾄﾘｯtrip
ﾌﾟ積算ｸﾘｱ
integration

右ボタン
Right
ButtonSet
pressure
設定圧力
1 min. passed
1min経過Center Button
中央ボタン

中央ボタン
Center
Button or
no operationor for 3min
3min無操作

右ボタン
Right
ButtonTemperature
温度
1 min. passed
1min経過右ボタン
Right
Button
(3s)
(3 s)

Shift
to setting mode
設定モードへ遷移

右ボタン (3 s)Right Button (3s) or end of testo rtimemode

テスト モード時間終了

Shift to test mode
テストモードへ遷移

Figure 8-2. Button operation in measurement mode and switching to each mode25

B. Functions in each mode
1) Measurement mode (normally)- Indication of main display (upper section)(1) Each time "Left Button" is pressed, the main display indicates in order of integrated
flow rate (trip) and integrated flow rate.

Actual flow rate

Normal conversion flow rate Indicationof integrated flow rate (Ex.)

Standard conversion flow
rate

Actual flow rate

Normal conversion flow rate Indicationof trip integrated flow rate (Ex.)

Standard
conversion
flow rate(2) When "Left Button" and "Right Button" are pressed simultaneously during theindication of trip integrated flow volume, the integrated trip volume is cleared.
(3) When the trip integrated flow rate overflows from 9999999.99, the display shows
0000000.00 without zero suppression and integrating operation is continued.

(Trip integrated flow rate value 10000152.68 [Normal / m3])
Indication of trip integrated flow rate with overflow (Ex.)- Indication of sub display (lower column)
Each time "Right Button" is pressed, the sub-display indicates in order of set pressure(value set in the setting mode [F5]), temperature, and instantaneous flow rate. Whenone minute elapses during the indication of set pressure / temperature, the display
automatically indicates the instantaneous flow rate.
Note that the separator line disappears when set pressure is indicated.

Instantaneous flowrate

Set pressure

26

Temperature

2) Test mode
The test mode is a function that temporarily releases low flow cutoff.
(1) Perform the test mode when there is no flow. When "Right Button" is pressed for atleast 3 seconds during the measurement mode, the mode shift to the test mode
where a very small flow rate can be measured.
(2) During the test mode, the unit of sub-display (m3/h, kPa, °C) blinks at the intervals of
0.5 seconds.
(3) Test mode time is selected from 3 min / 60 min / No limit in the setting mode. Whenthe set time elapses, the test mode automatically shifts to the measurement mode.
When "Right Button" is pressed for at least 3 seconds again during the test mode,the mode shifts to the measurement mode.
(4) When an indicated value of the instantaneous flow-rate is a flow-rate value of (+)0.1
or more, there is a possibility of leakage* at the downstream side.
(5) If a negative value (-) is indicated as instantaneous flow rate, there may be leakage
at the upstream.
* Possibility of leakage: This is only a possibility since values indicated include
offset of zero flow-rate and internal convection.
(6) The value of instantaneous flow rate during the test mode is indicated by rounding at
the third decimal place.
Ex.) Measured value: 0 to 0.004 [m3/h] →Indication: 0.00 [m3/h]
Measured value: -0.004 to 0 [m3/h] →Indication: 0.00 [m3/h]

3) Setting mode
(1) When "Center Button" is pressed, the mode shifts to the setting mode. To shift fromthe setting mode to the measurement mode, press "Center Button" again. When no
operation is made for 3 minutes in the setting mode, the mode automatically shifts tothe measurement mode.
(2) In the setting mode, settings described in "Table 7-1 Various setting items and details
in setting mode" (p. 21) may be changed.
(3) For button operation in the setting mode, see Figures 8.3 and 8.4 "Display switchingin various setting modes" (pp. 32 and 33) in terms of external power supply
specification and Figures 8.5 and 8.6 "Display switching in various setting modes"(pp. 34 and 35) in terms of built-in battery specification.

27

- Details about setting items ● [F1] Select conversion function
Select "actual flow rate" or "conversion flow rate.""Actual flow rate" is selected as factory default setting of this product setting. When
"Conversion flow rate" is selected, normal conversion flow rate or standard conversion
flow rate is applied according to the setting of [F2] Conversion standard temperatureand [F3] Conversion standard pressure, as described in Table 8-2.
Conversion flow rate is converted based on the temperature t [°C] and set pressure p[kPa], both measured simultaneously with flow rate,
Table 8-2. Indication / output value in [F1] - [F3] setting
Select actual flowrate conversion [F1]Conversion standard
temperature [F2]Conversion standard
pressure [F3]Normal / "Standard"
Indication

No (oFF)

Nil

Selected (on)00Normal indication

Selected (on)Other than 0

Other than 0Standard indication

Integration
indication, flow rate
indication andoutputActual flow rate
Normal conversion
flow rate
Standard conversion
flow rate

Carry out internal arithmetic of the conversion as follows.
Qn= /(T+t0) (T+t1) x(P+p1)/(P+p0) x Qr
Qr: Actual flow rate [m3/h]
Qn: Conversion flow rate [Normal(Standard) m3/h]
T:273.15 [K] (absolute temperature at 0 °C)
t1: Fluid temperature [°C]t0: Conversion standard temperature [°C] (set in the setting mode [F2])
P:101.33 [kPa abs] (absolute pressure of 1 atm)
p0: Conversion standard pressure (set in the setting mode [F3])p1: Set pressure (gauge pressure) [kPa] (set in the setting mode [F5])When the external output function and conversion flow rate are used together, it isrecommended to refer to the examples of conversion in Tables 3-1 and 3-2 (p. 10) to
set output constant.
● [F2] Conversion standard temperature
When "conversion flow rate" is selected in [F1] Select conversion function, the standard
temperature for conversion is set.
When "actual flow rate" is selected, setting of the conversion standard temperature
becomes invalid.
● [F3] Conversion standard pressure
When "conversion flow rate" is selected in [F1] Select conversion function, the standard
pressure for conversion is set.
When "actual flow rate" is selected, setting of the conversion standard pressure
becomes invalid.
28

● [F4] Output pulse unit
Select the unit of output pulse from 10000, 1000, 100, 10, and 1.(Unit is [L/P])
Note that when setting of [F1] "Select conversion function" is changed, the setting valueof [F4] "Output pulse unit" automatically changes to the value of factory shipment
setting (1000 [L/P]). After setting [F1], set [F4] again if necessary.
● [F5] Set pressure
Set the pressure value of the environment to be used with a gauge pressure.
● [F6] Select alarm output
The following items can be selected in alarm output according to the power supply
specification.
Battery specification (BT): Flow-rate upper / lower limit alarm or battery replacement
alarm
External power supply specification (DC/AC): Flow-rate upper / lower limit alarm or
upper integrated value limit alarm<Flow-rate upper / lower limit alarm output>
In alarm output, alarm signal is outputted when instantaneous flow rate is above thesetting value of alarm output upper-limit flow rate or when instantaneous flow rate is
below the setting value of alarm output lower limit flow rate. In stopping of alarm
output, alarm signal stops during alarm output when instantaneous flow rate is above(alarm output lower/limit flow rate + Alarm determination value hysteresis width) or
when instantaneous flow rate is below (alarm output upper-limit flow rate - Alarm
determination value hysteresis width).
Note that set the values so that (Alarm output upper-limit flow rate) is above (Alarm
output lower-limit flow rate + Alarm determination value hysteresis width)<Battery replacement alarm>
When 6 years (including storage period) have passed after battery connector
connection (power on), alarm signal indicating battery replacement is outputted.

29

<Integrated value upper limit alarm>
When integrated flow rate per hour from power on exceeds the set integrated flow
rate, this alarm is outputted and the state is maintained for one hour. Alarm output is
stopped when an electronic statement signal requesting reset of the integrated value
upper limit alarm is received through communication but monitoring of integrated
value per hour is continued.
1ｈ

1ｈ

1ｈ

Alarm

警報あり

No
alarm
警報なし
Power
on
電源投入

No
alarm
警報なし

Alarm
警報あり

No
alarm
警報なし

Reset
command
リセット命令→No alarm but integrated value→警報はなしとなるが、１ｈ間の積算値監視は
monitoring per hour is continued.
継続して実施。

Set the upper limit of the integrated flow rate through communication.
* For detailed specifications of communication, download from our company's web
site.
Product website: http://www.aichitokei.co.jp/products/14_s_sonic/ux/● [F7] Alarm output contact state
Select either "Normal open (n.OP)" or "Normal close (n.CL)" as the contact state ofalarm output.
● [F8] Alarm output lower-limit flow rate
Set the lower-limit flow-rate value of the flow-rate upper/lower limit alarm output. For
use in "conversion flow rate," set the converted value.
● [F9] Alarm output upper-limit flow rate
Set the upper-limit flow-rate value of the flow-rate upper/lower limit alarm output. For
use "conversion flow rate," set the converted value.
● [F10] Alarm determination value hysteresis width
For the flow rate values set on the upper and lower limit sides of the flow rate upper /lower limit alarm output, set the flow rate for stopping alarm output. For use"conversion flow rate," set the converted value.
For example, when setting the upper limit of flow rate value to 7.00 [m3/h], lower limitof flow rate value to 2.00 [m3/h], and alarm determination value hysteresis width to 1.00
[m3/h], alarm is outputted at 7.00 [m3/h] or higher and stops when less than 6.00 [m3/h]
for the upper limit. Similarly for the lower limit, alarm is outputted at 2.00 [m3/h] or lower
and stops when higher than 3.00 [m3/h].

30

● [F11] Current output full-scale flow rate
Set the full-scale flow rate value when instantaneous flow rate is set with analog output.
For the factory default, the flow rate value specified in Table 7-1 (p. 21) is set. For use"conversion flow rate," set the converted value.
● [F12] Select current output
Select the output signal of current output from "Instantaneous flow rate (FLo)" and"Temperature (tEP)."● [F13] Communication bit rate
Communication bit rate can be selected from "4800 bps (4800)" and "9600 bps (9600)."● [F14] RTU address
RTU address can be selected from 001-247.
● [F15] Average moving times
Select the indication of instantaneous flow rate and average moving times of output.
For the factory default, average moving times set to 4 times and the measured valuesof the last four measurements are adopted.
In normal use, average moving times need not be changed but may be selected from
1 to 16 times in setting. When "1 time" is selected, "No moving average" is set.
● [F16] Time selection in test mode
Test mode time may be selected. Factory default is set to "3 min," in addition to which"60 min" and "No limit" are selectable.
● [F17] Select gas type
Select from "13A (13A)", "Propane (Pro)", "Butane (but)", and "Nitrogen (n2)" according
to the types of gas to measure.
Note that "Air" is displayed on the select screen, which is for maintenance and cannot
be selected as a gas type of this product.

31

The following figures show display switching in various setting modes.
C中央ボタン
Button or
no operationorfor 3 min
３分無操作

Measurement
計測モード
mode
C Button
中央ボタン
L Button +L Button有On

左ボタン+右ボタン
R Button

左ボタン

F1

Select conversion

換算機能選択function
L Button +左ボタン+右ボタン

R右ボタン
Button左ボタン
L Button

R Button*※右ボタンで点滅部
Blinking part incrementwith R Button
インクリメント

L左ボタン
ButtonR右ボタン
Button

L Button +

点滅
Blink

左ボタン+右ボタン
R Button

F２

無
Off

L 左ボタン
Button左ボタン
L Button

左ボタン
L Button

点滅
Blink

点滅
Blink

Conversion standard
換算基準温度
temperature

左ボタン+右ボタン
L Button +R Button

点滅 右ボタンR Button
Blink

R
Button右ボタン

L左ボタン
ButtonR右ボタン
Button左ボタン
L
Button

L Button
左ボタン+右ボタン+ R Button

F３

点滅 左ボタン
点滅 左ボタン
点滅 左ボタンBlink
Blink
L Button
L Button
L Button
パルス出力Blink
警報出力* Blinking part increment※右ボタンで点滅部
with R Button
インクリメント

点滅
Blink

Conversion standard
換算基準圧力pressure

左ボタン+右ボタン
L Button +R Button
左ボタン
L
ButtonR右ボタン
Button

L Button +L 左ボタン
Button
１L/P

左ボタン+右ボタン
R Button

１０L/P

L左ボタン
Button１００L/P

L左ボタン
Button左ボタン
L Button

１０００L/P

L左ボタン
Button１００００L/P

F４ 出力パルス単位
Output pulse unit
L Button +左ボタン+右ボタン
R Button

L Button +左ボタン+右ボタン
R Button

F５

L 左ボタン
Button

L Button
左ボタン

R右ボタン
Button点滅 左ボタンL Button
Blink

点滅 L
左ボタン
ButtonBlink

L左ボタン
Button左ボタン
L Button

点滅
Blink

点滅
Blink

※右ボタンで点滅部* Blinking part
インクリメント
increment with R

ButtonSet
pressure
設定圧力

L Button +左ボタン+右ボタン
R Button

L Button +左ボタン+右ボタン
R Button

F６

L左ボタン
Button

L Button
左ボタン

R右ボタン
ButtonFlow rate high
流量上下限警報
upper/low
limit alarm

左ボタン
L
ButtonIntegrated value upper
積算値上限警報
limit alarm

Selectalarm output
警報出力選択L Button +左ボタン+右ボタン
L左ボタン
ButtonR Button

R右ボタン
Button

L Button
左ボタン

L Button +左ボタン+右ボタン
R ButtonNormal open
ノーマルオープン

Normal close
ノーマルクローズAlarmoutput
警報出力
contact
state
接点状態

F７

L Button +左ボタン+右ボタン* Blinking
part increment※右ボタンで点滅部
with R Button
インクリメント

L左ボタン
ButtonR Button

R右ボタン
Button

L Button
左ボタン
L Button +

点滅
Blink

左ボタン+右ボタン
R Button

F８

L左ボタン
Button左ボタン
L
Button点滅 左ボタンBlink
L Button

点滅 左ボタンBlink
L Button

Blink
点滅

左ボタン
L Button

点滅
Blink

Alarm
output lower警報出力
limit
flow rate
下限流量

L Button +左ボタン+右ボタン
R Button

L左ボタン
ButtonR右ボタン
Button

L Button
左ボタン

L Button +* Blinking
part increment※右ボタンで点滅部
with
R Button
インクリメント
点滅
Blink

L左ボタン
Button

点滅
Blink
L左ボタン
Button点滅 左ボタンBlink
L Button

点滅
Blink

左ボタン
L Button

点滅
Blink

左ボタン+右ボタン
R Button

F９

Alarm
output upper警報出力
limit
flow rate
上限流量

L Button +左ボタン+右ボタン
R Button

R右ボタン
Button

L左ボタン
Button左ボタン
L
ButtonFigure 8-3. Display switching in various setting modes (External power supply
specification)
32

F９

Alarm
output
警報出力
upper-limit flow
上限流量
rate

L Button +左ボタン+右ボタン
R Button

F１０※右ボタンで点滅部* Blinking
part increment
インクリメントwith
R Button

L Button
左ボタン

R右ボタン
Button

点滅
Blink

L左ボタン
ButtonBlink
点滅

点滅 左ボタンBlink
L Button

点滅 左ボタンBlink
L Button

L Button
左ボタン

Alarm
determination
警報判定値
value hysteresis
ヒステリシス幅width

左ボタン+右ボタン
L Button +R Button※SW２で点滅部
インクリメント

L左ボタン
Button
L Button
左ボタン

右ボタン
R
Button

L Button +R Button
左ボタン+右ボタン

F1１

点滅
Blink

* Blinking
part increment※右ボタンで点滅部
withインクリメント
R ButtonBlink
点滅

L 左ボタン
ButtonBlink
点滅

点滅 左ボタンBlink
L ButtonBlink
点滅 L左ボタン
Button

L左ボタン
Button点滅
Blink

Current output
電流出力フルス
full-scale
flow rate
ケール流量
L Button +左ボタン+右ボタン
R ButtonR
Button
右ボタン

L Button +左ボタン+右ボタン
R Button

F１２

L 左ボタン
Button

L左ボタン
Button
L左ボタン
Button Temperature
温度

Instantaneous
flow rate
瞬時流量

Select current

電流出力選択outputR
Button
右ボタン

L Button +左ボタン+右ボタン
R Button
L左ボタン
Button
L Button +左ボタン+右ボタン
R Button

L左ボタン
ButtonButton9600bps L左ボタン

4800bpsCommunication bit

F１３ 通信ビットレート
rate
R Button
右ボタン

L Button +左ボタン+右ボタン
R Button
L左ボタン
Button
L Button +左ボタン+右ボタン
R Button

F１４

L左ボタン
ButtonBlink
点滅* Blinking
part increment※右ボタンで点滅部
with R Button
インクリメント
Blink
点滅

Blink
点滅 左ボタンL Button

L Button
左ボタン

RTU address
RTUアドレス
L Button +左ボタン+右ボタン
R Button

R Button
右ボタン

L Button +左ボタン+右ボタン
R Button

F１５

L左ボタン
Button

L左ボタン
Button
4 times
4回

L左ボタン
Button

55回
times

L
Button左ボタン

L左ボタン
Button

3３回
times

Average moving

R
Button右ボタン

L左ボタン
Button

L Button
左ボタン
L Button +左ボタン+右ボタン
R Button

３分
3 min

L左ボタン
Button 60
min
６０分

L左ボタン
Button

No
limit
無制限

L左ボタン
ButtonButaneブタン

Selecttest mode
テストモードtime
時間選択R
Button
右ボタン

L Button +左ボタン+右ボタン
R Button
L左ボタン
Button
L Button +左ボタン+右ボタン
R Button

F１７

2２回
times

移動平均回数times
L Button +左ボタン+右ボタン
R Button

F１６

L左ボタン
Button・・・

L左ボタン
Button１３A

Propane
L左ボタン
Button プロパン

窒素
L左ボタン
Button Nitrogen

L左ボタン
ButtonAir
空気

Selectgas type
ガス種選択
L Button +左ボタン+右ボタン
R Button

L左ボタン
Button*※空気はメンテナンス用のたDo not select "Air", which is
め選択しないで下さい
for maintenance.

Figure 8-4. Display switching in various setting modes (External power supply
specification)

33

Measurement
計測モード
mode

C Button or
中央ボタン
no operationorfor 3 min
３分無操作

C Button
中央ボタン
L Button +L Button有On

左ボタン+右ボタン
R Button

左ボタン

Select conversion

F1

換算機能選択function
L Button +左ボタン+右ボタン

右ボタン
R Button

R Button

左ボタン
L Button*※右ボタンで点滅部
Blinking part incrementwith R Button
インクリメント

L左ボタン
ButtonR右ボタン
Button

L Button
左ボタン

点滅
Blink

L Button +R Button

左ボタン+右ボタン

F２

無
Off

L 左ボタン
Button

L Button
左ボタン

Blink
点滅

Blink
点滅

Conversion standard
換算基準温度
temperature

L Button +左ボタン+右ボタン
R Button

R右ボタン
Button点滅 右ボタンR Button
Blink

L左ボタン
ButtonR右ボタン
Button左ボタン
L
Button

L Button +R Button
左ボタン+右ボタン

F３

点滅 左ボタン
点滅 左ボタン
Blink
点滅 左ボタンBlink
L Button
L Button
L Button
パルス出力Blink
警報出力* Blinking part increment※右ボタンで点滅部
with R Button
インクリメント

Blink
点滅

Conversion standard
換算基準圧力pressure

L Button +左ボタン+右ボタン
R Button

R右ボタン
Button

L 左ボタン
Button左ボタン
L Button

L Button +１L/P

左ボタン+右ボタン
R Button

１０L/P

L
Button左ボタン

１００L/P

L左ボタン
Button

L Button
左ボタン

１０００L/P

１００００L/P

L
Button左ボタン

F４ 出力パルス単位
Output pulse unit
L Button +左ボタン+右ボタン
R Button

L Button +左ボタン+右ボタン
R Button

F５

L 左ボタン
Button

L Button
左ボタン

R右ボタン
Button点滅 左ボタンBlink
L Button* Blinking part

L左ボタン
Button

点滅 L
左ボタン
ButtonBlink

L左ボタン
Button

点滅
Blink

点滅
Blink

※右ボタンで点滅部
increment with R
インクリメント

ButtonSet
pressure
設定圧力

L Button +左ボタン+右ボタン
R Button

L Button +左ボタン+右ボタン
R Button

F６

L左ボタン
Button

L Button
左ボタン

R右ボタン
ButtonFlow rate high
流量上下限警報
upper/low
limit alarm

L Button
左ボタン

Integrated value upper
電池交換警報limit alarm

Selectalarm output
警報出力選択L Button +左ボタン+右ボタン
R Button

R右ボタン
Button左ボタン
L
Button左ボタン
L Button

L Button +左ボタン+右ボタン
R ButtonNormal open
ノーマルオープン

Normal close
ノーマルクローズAlarmoutput
警報出力
contact
state
接点状態

F７

L Button +左ボタン+右ボタン
R右ボタン
Button* Blinking
part increment※右ボタンで点滅部
with R Button
インクリメント

L左ボタン
ButtonR Button

L Button
左ボタン
L Button +

点滅
Blink

左ボタン+右ボタン
R Button

F８

L左ボタン
Button左ボタン
L Button

点滅 左ボタンBlink
L Button

点滅 左ボタンBlink
L Button

点滅
Blink

左ボタン
L Button

点滅
Blink

Alarm
output lower警報出力
limit
flow rate
下限流量

L Button +左ボタン+右ボタン
R Button

L左ボタン
ButtonR右ボタン
Button

L Button
左ボタン

L Button +* Blinking part increment※右ボタンで点滅部
インクリメントwith R Button
点滅
Blink

L左ボタン
ButtonBlink
点滅 L Button
左ボタン

Blink
点滅 左ボタンL Button

点滅
Blink
L Button
左ボタン

Blink
点滅

左ボタン+右ボタン
R Button

F９

Alarm
output upper警報出力
limit
flow rate
上限流量

L Button +左ボタン+右ボタン
R Button
R右ボタン
Button

L左ボタン
Button

L Button
左ボタン

Figure 8-5. Display switching in various setting modes (Built-in battery specification)

34

F９

Alarm
output
警報出力
upper-limit flow
上限流量
rate

L Button +左ボタン+右ボタン
R Button

F１０* Blinking
part increment※右ボタンで点滅部
withインクリメント
R Button

L Button
左ボタン

R右ボタン
Button

点滅
Blink

L左ボタン
Button

点滅
Blink

Blink
点滅 L
Button左ボタン

L
Button左ボタン

点滅 左ボタンBlink
L Button

Alarm
determination
警報判定値
value
hysteresis width
ヒステリシス幅L Button +左ボタン+右ボタン
R ButtonR
Button
右ボタン

4 times
4回

L左ボタン
Button

55回
times

L左ボタン
Button

2 ２回
times

L 左ボタン
Button3３回
times

L 左ボタン
ButtonAir
空気

Average moving

移動平均回数
times

R
Button右ボタン

L左ボタン
Button

L Button
左ボタン
L Button +左ボタン+右ボタン
R Button

3 min
３分

L左ボタン
Button 60６０分
min

L左ボタン
Button

No
limit
無制限

Selecttest mode
テストモードtime
時間選択
L Button +左ボタン+右ボタン
R ButtonR
Button右ボタン

L左ボタン
Button

L左ボタン
Button
L Button +左ボタン+右ボタン
R Button

F１７

L左ボタン
Button・・・

L Button +左ボタン+右ボタン
R Button

F１６※SW２で点滅部
インクリメント

L左ボタン
Button

L Button
左ボタン

L Button +左ボタン+右ボタン
R Button

F１５

Blink
点滅

１３A

ButanePropaneプロパン L 左ボタン
ブタン
Button
L 左ボタン
Button窒素
L左ボタン
Button Nitrogen

Selectgas type
ガス種選択
L Button +左ボタン+右ボタン
R Button

L左ボタン
Button* Do not select "Air", which is※空気はメンテナンス用のたfor maintenance.
め選択しないで下さい

Figure 8-6. Display switching in various setting modes (Built-in battery specification)35

9. Start-up procedure
When starting operation, open the valve gradually and check whether the pilot lamp is
blinking. Blinking of the pilot lamp indicates that the fluid is flowing.

10. Alarm indication
For alarm indication, "▲" corresponding to each alarm turns on.

1) Abnormal ultrasonic measurement
If ultrasonic signals are weak or cannot be received, "Abnormal ultrasonicmeasurement” lights up and the instantaneous flow rate indicates "0.00". Integration offlow rate is stopped and the integrated flow rate immediately before the occurrence ofabnormality is indicated on the display, and analog output outputs 1 mA.
Check whether any foreign matter that obstructs transmission of ultrasonic signals is
contained or whether there is any fluid such as oil that adhered to or retains in the pipe.
If "Abnormal ultrasonic measurement” still turns on even after no adhesion or retentionof foreign matter is observed, contact our branch or sales office nearby.

(Note) Operation at start-up
When installing or starting up the flow meter, the alarm may turn on due to an
excessive flow rate or mixture of air and gas that may occur when replacing
atmospheric air with the gas. This alarm automatically turns off when replacement36

2)

is completed and the fluid becomes stable. (This is not an abnormality.)
Battery replacement alarm [Built-in battery specification](1) When 6 years (including storage period) have passed after battery connector
connection (power on), "Battery replacement alarm" indicating battery replacement
turns on. Even after this alarm turns on, measurement is continued. Earlier
replacement of the battery is recommended once "Battery replacement alarm"turns on. For replacement of the battery, contact our branch or sales office nearby.

(2) After "Battery replacement alarm" turns on, when residual battery power becomesvery small, "integrated value" blinks in a 0.5-second interval. Measurement
operation stops, instantaneous flow rate indicates "0.00", and integrated flow rate
stops and keeps on indicating the value immediately before the alarm. Then,
replace the battery promptly.
For replacement of the battery, contact our branch or sales office nearby.

Normally, the battery life is at least 5 years but "Battery replacement alarm" mayappear in less than 5 years depending on ambient temperature.

373) Abnormal temperature
When abnormal temperature is detected, "Abnormal temperature" turns on.
Instantaneous flow rate indicates "0.00", the temperature shows the abnormal value,
and analog output represents 1 mA. Integrated flow rate of the main display stops
integration and keeps on indicating the value immediately before the abnormality.

4)

Abnormal external memory(1) "Abnormal external memory" turns on when abnormal data is detected in settingwith button operation and integrated value return at power on in the external power
supply specification. When "Abnormal external memory" turns on, check thesetting value and reset the data. If "Abnormal external memory" does not turn off
even after resetting the data, the flow meter may be out of order, so contact ourbranch / sales office nearby.

(2) When abnormal internal data is detected, "integrated value" blinks in a 0.5-second
interval. The flow meter may be out of order, so contact our branch or sales officenearby.

38

11. Treatment at power failure [24VDC specification]1) Detection of power failure
The drop of a power source voltage to 18±1.1V or lower is judged to be a power
failure. As a result, the measurement is stopped and the LED display is turned off.
2) Reset from power failure
When the power supply voltage recovers to 18.8±1.1V or higher, the measurement
is resumed and the LED display turns on. Integrated flow rate and trip integration
are memorized every 5 minutes after power on. After recovery from the power failure,each integrated value memorized just before power failure is restored and integration
resumed from that value.
Note that after recovery from power failure, the LED display of the upper column
indicates integrated flow rate.

12.

Battery life [Built-in battery type]The life of the built-in battery is 5 years. (This is the life at the environment temperatureof 20°C. The battery life fluctuates depending on the temperature of installation
environment.)
Never dispose of this product through the normal disposal route since it has a built-in
lithium ion battery. * For battery replacement, contact our branch or sales office nearby.

39

13. Troubleshooting
TimingPhenomenon

Abnormal ultrasonicmeasurement "" turns on(see p.36).
Immediately
after
installation

Possible causes
Replacing the gas.
The flow meter is usedoutside the specification
range (installation
conditions, pressure,temperature, etc.)

Check whether "For safe and properuse" [p.2 - p.4] and the Specifications[p. 8 - p. 9] are satisfied.

There is a large electric
noise source near the flow
meter.

Integration does notstart immediately
after installation.

Replacing the gas.

Instantaneous flowrate represents a
negative value.

Flow direction of the fluid is
opposite to the flow directionof the flow meter.

Battery
replacement alarm"" turns on(see p.37).
Integrated value
blinks.

Instantaneous flowrate appears to be
wavering.

Low battery voltage

Battery life expiration
Pressure is fluctuating
frequently.

Flow pulsation.

After startup

Instantaneous flowrate is not zero
although no fluid isflowing.

Actions
Abnormal ultrasonic measurement turns
off when replacement is finished.

The gas is flowing
convectively in the piping.
Test mode is ON.

Instantaneous flowrate is too large.

Integrated flow rate (Normal
or Standard) is indicated.

Instantaneous flowrate appears toremain unchanged.

Excessive fluid more thanspecification is flowing.

Instantaneous flowrate is too small.

Actual flow rate (m3) isindicated.

Partition line isblinking.

Under adjustment operation
due to pressure fluctuation

No indication of“0”in the high order
digit of integrated
flow rate.

Trip integration is indicated/

Take measures for eliminating the noise
source or shielding the meter.
Use the shielded type for cables
connected to the terminal block andground the shield.
Check whether the partition line
between the main display and subdisplay is blinking. Integration starts
when replacing is finished.
Check whether the arrow direction on
the external surface of the flow metercorresponds to the flow direction of thefluid.
Showing the time to replace the built-in
battery.
(Contact our branch / sales officenearby.)Showing the battery life of the built-in
battery is expiring. (Contact our branch /sales office nearby.)
The flow meter is operating normally.
Recommended to install the flow meterat a location with less pressure
fluctuation to measure more accurately.
The flow meter is operating normally.
Recommended to install the flow meterat a location with less pulsation tomeasure more accurately.
The flow meter is operating normally.
Check whether unit of sub-display isblinking.
(See test mode [p. 27])
Check whether the unit matching theusage is selected.
(For changing the unit, see "Flow metersetting" [p. 21])
Use the flow meter within thespecification range.
(See [p. 8 - p.9] for the specifications.
Check whether the unit matching theusage is selected.
(For changing the unit, see "Flow metersetting" [p. 21])
The flow meter is operating normally.
Adjustment operation ends in about one
minute and blinking shifts to turning on.
The flow meter is operating normally.
(To return the display to forward
integrated flow rate, see "Display
operation instructions" [p.25 - ])Contact our sales office nearby if any phenomenon cannot be solved even by taking the measures above.

40

- Warranty and after-sale service1) Warranty period
For the period of one year after purchase, in case of a failure that is explicitly
attributable to our manufacturing process, we exchange the product for free.
2) Scope of warranty
The following are not included in the scope of warranty.
- Failure caused by force majeure, such as natural disaster.
- Disassembly or alteration of the product.
- Failure caused by mishandling.
- Failure caused by use in excess of the scope of the specifications (environmentetc.)- Other cases determined to be not attributable to our responsibility
Note that the warranty referred to herein means warranty for the single productwe delivered and excludes any damage to the user that is derived from failure of
our product (e.g. damage / injury to other products than ours, lost profit, opportunityloss).
3) Request for service
Regardless of whether within or outside the warranty period, contact our branch /sales office nearby to provide the product name, model, work number, manufacture
number, and other details of the failure.
4) Precautions for long-term use[Designed standard use period] 10 years
Warning- The designed standard use period means a standard period for which the
product is available after installation without safety problem despite aged
deterioration under the standard use conditions (environmental temperature:
20 °C, environmental moisture: 65% RH).
- If the product is used in excess of the designed standard use period, safety
problem may occur to the problem, such as reduced water / dust resistancedue to aged deterioration, smoke / ignition, and electric shock.
- When the designed standard use period is over, the product should be usedcarefully checking whether there is any abnormality and replacement with new
one should be considered.
- The designed standard use period is not the warranty period, and does notwarrant that there are no general failures during the period.

41Ver. 92023.0742