Specifications of Ultrasonic Flow Meter UX/UZ for Fuel Gas Management
ModelUX40

UZ50

UZ40

For Fuel Gas ControlFlange

Rc1･1/2

Maximum working pressure
Gas type ※1

Rc2

JIS10K

100kPa500kPaCity gas (13A), butane (butane = 70%, propane = 30%), propane (propane = 98%, butane 2%), nitrogen and argon

Battery ※2
Power/AC power
consumption
DC power
Flow range City gas, nitrogen and argon(Actual flow) Butane and propane

Ultrasonic Flowmeter

Exclusive lithium battery (life = 5 years @20℃ and 65%RH)
100VAC±15%/max 10W (for 22mA)
24VDC±10%/max 2W (for 26.4V and 22mA)
3〜150m3/h

1.6〜80m3/h

Temperature and pressure compensation ※4
Conversion accuracy

3〜150m3/h

1.6〜80m3/h

3〜80m3/h±4%RD(for a range of 10% to 100% of the max flow)±0.5%FS(for a range of 2% to 10% of the max flow)

Accuracy ※3

Display

UX50
Screw

Pipe connection±0.5％FS

UX/UZ

3〜80m3/h±4％RD

2% of the max flow

10% of the max flow

Max flow

Yes/No (Normal/Standard conversion)±1.5%RD(@23℃ and 100kPa)±1.5%RD(@23℃ and 500kPa)

Developed jointly by Tokyo Gas Co., Ltd. and our company

Accumulated flow (actual flow: 8-digit integer + 2 decimal places, converted flow: 8-digit integer + one decimal place, accumulated flow of trip function)

Main display

Alarm indication (for ultrasonic sensor, temperature sensor, pressure sensor, external memory and power voltage (for battery operation only))

Sub display
Analogue(For 100VAC or 24VDC only) 4-20mADC (load resistance = max 400Ω): choose among options of instantaneous flow, temperature and pressure (default = instantaneous flow)

PulseOutput 1 (accumulated flow volume pulse): standard = 1000L/P (choose 10, 100, 1000 or 10000 L/P): duty = 20 ‒ 80%

Instantaneous flow: 5 digits; temperature: 3 digits; and pressure: 5 digits
Nch open-drain output (maximum load 24VDC, 50mA)

OutputOutput 2 (alarms): upper & lower limits, or upper limits of accumulated flow (for 100VAC or 24VDC drive); low voltage, or upper & lower limits (for battery drive)

Communication ※5(For 100VAC or 24VDC drive) RS485 Modbus/RTU (4800/9600 bps)

Fluid temperatur
Ambient working temperature and humidity
Protective structure
Mass-10℃ to +60℃, under unfrozen condition-10℃ to +60℃, max 90%RH, no condensation permissible
Indoor and outdoor use *6, IP64 (JIS C 0920)
About 6.3kg

About 4.7kg

About 8.8kg

About 7.0kg*1 Gas type (composition) can be changed on site among those speciﬁed here with little degradation in measuring accuracy.
*2 Replaceable without removing the meter from the piping*3 In case a distance from an elbow of minimum 10D in the upstream side and 5D in the downstream side of the meter can be secured: ±2%RD (for a range of 10% to 100% of the max. ﬂow) and ±0.5%FS (for a range of 2% to 10% of the max. ﬂow).
The distance to a governor should be greater than 10D for both the upstream and downstream sides of the meter. Failing to meet this condition may lead to naccurate measurements. For other conditions for installation, please contact us.
*4 Normal ﬂow: Conversion of measurement into a ﬂow at 0℃ and1atm. Standard ﬂow = conversion of measurement into a ﬂow at the reference temperature and 1 atom
*5 For communication speciﬁcations, see our company's website to download it.
*6 High temperatures can cause the electronic circuit board to be deteriorated and the batteries to be consumed. To avoid unnecessary rise in temperature,
the product is recommended to be ﬁtted with a sunshade.

Conversion into Normal flow: example (at fluid temperature of 15℃)
○ Diameter of 40A
Actualflow

2.8kPa

15kPa

60kPa 100kPa 150kPa 300kPa 500kPa

1.6 m3/h

1.5

1.6

1.7

2.4

3.0

3.8

6.0

9.0

80 m3/h

77.3

77.9

87.0

120.7

150.7

188.1300.4450.1

2.8kPa

15kPa

60kPa 100kPa 150kPa 300kPa 500kPa○ Diameter of 50A
Actualflow＝

3 m3/h

2.9

2.9

3.3

4.5

5.7

7.1

11.3

16.9

150 m3/h

145.0

146.1

163.2

226.4

282.5

352.7

563.2

843.9

Actualflow

×

AtmosphericGaugepressurepressure＋（101.325kPa） （kPa）
Atmospheric pressure（101.325kPa）

×

Absolute temperaturescale value of 0℃（273.15K）
Absolute temperaturescale value of 0℃（273.15K）

Fluid＋ temperature（℃）

Gauge
Atmospheric
Absolute temperature Reference temperaturepressure
scale value of 0℃＋ pressure＋ for conversion（273.15K）（℃）（kPa）（101.325kPa）
××＝
Atmospheric
Reference pressure Absolute temperature
Fluidflow＋ temperaturescalevalueof0℃
pressure＋ for conversion（273.15K）（℃）（101.325kPa）（kPa）

Standard flow

m3/h （normal）

2kPa

Gauge pressure

Normal flow

m3/h （normal）

2kPa

Gauge pressure

Equation for conversion

ActualTerminal stands and connection
RS485

AC power

M4

RS485 RS485
A+
B-

DC power

RS485

24VDC

RS485 RS485
A+B-

GND 24VDC
(-)
(+)

UZ40

Battery

UX40

M3

4-20mA GND
OUTPUT (-)(+)

PULSE ALARM
OUTPUT OUTPUT(+)
(+)

PULSE
OUTPUT

L

N

100VACALARM
OUTPUT
4-20mAOUTPUT

M34-20mA GND
OUTPUT (-)(+)

PULSE ALARM
OUTPUT OUTPUT(+)
(+)

PULSE
OUTPUT
ALARM
OUTPUT
4-20mAOUTPUT

M3GND(-)

PULSE ALARM
OUTPUT OUTPUT(+)
(+)

PULSE
OUTPUTNo straight pipe

ALARM
OUTPUTsection requiredfor installation
Technical specifications in this catalog are up-to-date as of June 2020

Manufactured and Distributed by

Aichi tokei denki co.,ltd.
URL：https://www.aichitokei.net/

1-2-70 Chitose, Atsuta-ku, Nagoya, 456-8691, JapanFor inquires, please contact us.
Overseas Business Division TEL +81-(0)52-661-5150

To Our Customers

Please understand that product specifications may be changed without noticein order to improve performance. We are always happy to provide the latest
catalogs and brochures, and respond to inquiries made to our offices.

1.5

202006-UXUZ-000

Wide operation

Batteryrange

replaceable

Developed for customer's "NEEDS"
Need1 Customer wants to install a flow meter immediately after a bend part in the piping

No straight pipesection requiredfor installation

Need3 Customer wants to replace batteries

Gas

It is possible to connect the flow
meter directly to a bend such as
an elbow piece and a flexible pipe.

The flow meter has to be located 10D or more distant from a governor irrespective
whether it is placed upstream or downstream of the governor. Falling to meet thiscondition may lead to inaccurate measurements. (D = pipe diameter)

Users can replacebatteries without
removing the meterfrom the piping.

UX/UZ 40
TBX30

6 〜 60m3/h

Customer's option to be chosenwhen buying the product

Need5 Customer wants to use it outdoors

Strong against dust,
and high durability

IP64 Protection‒ available for outdoor use

TBZ15012.5 〜 150m3/h

TBX15012.5 〜 150m3/h

TBX10010 〜 100m3/h

10100* The overall length (L) is as same as that of our company's turbine meter (TBX/TBZ) of the same diameter.

Model code
Basic
Model

Model

LH

W

hConnection diameter

Model

UX40

170

212

118

157

Rc1･1/2

UZ40200

222

157

JIS10K 40A Flange

UX50200227

123165

Rc2UZ50220238

165

JIS10K 50A FlangeLHhConnection diameter

UXUZ

Unit: mmW106HHｈｈ8888

Unit: mm

Use the product in such a condition
that does not allow the gas tore-liquefy into oil mist.

200 m3/h

160160

LLPressure loss chart

DiaPower
Gas
Flow direction
Compensation ーー typemeter ーsupply ー※140
50

0
100
500

BTDCACLRUDTo avoid interfering with the display and thehousing, use a hex bolts of 55mm in！ meterlength. (Recommended: M6×55mm)

High temperature can cause the electronic circuit board to be
deteriorated and batteries to be consumed. To avoid unnecessary risein temperature, the product is recommended to be fitted with a sunshade.

*1 The display's orientation is changeable on site.
*2 Thebattery is changeable on site.
※現地で表示の向きの変更が可能です。
（90 度毎）

13A
PRO
BTN
N2ARDescription
Screw connection
Flange connection
40A
50A
Actual flow (No compensation)
Temperature and pressure compensation UX
Temperature and pressure compensation UZ
BT: exclusive lithium battery *2
ＤＣ:24VDC±10%
ＡＣ:100VAC±10%
Left to right
Right to left
Bottom to top
Top to bottom
13A
PropaneButaneNitrogen
Argon

Flow - pressure loss characteristic
700

40A50A

600

Pressure loss [Pa]50A

3 〜 150m3/h

UZ106* Exchangeable battery packis of separately sold parts.

Need4 Customer wants to reduce maintenance work

UZ

4 〜 30m3/h

UX/UZ 50

1UX

Battery pack for
replacement*

TBX

TBZ

External dimension

Exclusive
lithium battery

100V
ACUX

1.6 〜 80m3/h
TBZ60

40A

Measuring a small
flow accurately

Gas

Gas type : city gas

DiameterApplicable also for measuring gas
flow of a burner having a large turndown ratio.

2 4VDCFor battery life, see the specifications
on the backside of this print.

Need2 Customer wants to measure a small flow range

As wide as a
1:50 turn down
ratio

You can choose one of thethree power supply options:

Easy to replacebatteries

500
400
300
200
100
0020

40

60

80

100

Flow-rate［m3/h］

120140160This date stands for pressure loss for air.
For city gas 13A, multiply the reading by 0.64 (specific gravity of the gas).
For LPG, multiply the reading by about 1.55 (specific gravity of LPG).