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Ultrasonic Flow Meter for Fuel Gas(External Power Supply 100 VACType)

Ver. 9Model

1/4

UX [Nominal diameter] - [Pressure]AC - [Flow direction] - [Gas type]

1. Specifications
 ModelUX [Nominal diameter] - [Pressure] AC - [Flow direction] - [Gas type]

Nominaldiameter

 40
 50

Pressure 0 (Type without pressure sensor)
 100 ( Type with pressure sensor )Connection diameter
Model
Connection
diameterFlow direction
 L (Left to right)
 R (Right to left) D (Downward) U (Upward)

UX40

UX50

Rc1・1/2

Rc2

Flow range

UX40
13A, PRO, BTN, N2, AR+1.6 to 80

UX50
13A, N2, AR+3.0 to 150

Accuracy• Flow measurement accuracy (Actual flow)
Model
UX40
Gas type
13A, PRO, BTN, N2, AR±0.5%FS+1.6 to 8.0±1.0%FSAccuracy

 13A (city gas 13A)
 PRO (propane) BTN (butane) N2(nitrogen) AR (argon)[m3/h]

Flow range (Actual flow)
Model
Gas type

Gas typePRO, BTN+3.0 to 80[m3/h]
UX50
13A, N2, AR
PRO, BTN+3.0 to 15.0
+3.0 to 15.0

±4.0%RD*+8.0 to 80+15.0 to 150+15.0 to 80* In case a distance from an elbow of minimum 10D in the upstream side and 5D in the downstreamside of the meter can be secured: ±2.0%RD• Conversion accuracy±1.5%RD (at 100 kPa, 23°C)
Conversion standard temperature
Conversion standard pressure: -10 to +60°C (In unit of 1℃): 0.00 to 10.00 kPa (In unit of 0.01 kPa,
gauge pressure)
Atmospheric pressure under working environment: 0.0 to 200.0 kPa (In unit of 0.1 kPa,absolute pressure)Low flow cutoff In case the measurement flow is lower than Qcut, 0 ㎥/h is displayed for
instantaneous flow.
Qcut (can be changed by button operation and communication)
ModelUX40
UX50
Initial setting value+0.3+0.6
Unit: Correlated to unit of sub display value
Response-ability Instantaneous flow displayvalue
Pressure display value
Temperature display value"" are selectable items.

0.5 second (smoothing by moving average method (initialsetting value: 4 times)
0.5 second (smoothing by moving average method (initialsetting value: 10 times))
0.5 secondProduct Specifications

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Display

Ultrasonic Flow Meter for Fuel Gas(External Power Supply 100 VACType)

Ver. 9Model

2/4

UX [Nominal diameter] - [Pressure]AC - [Flow direction] - [Gas type]

Main display : The following is switched and selected using the “left button”.
Accumulated flow volume (m3)·Trip accumulated flow volume (m3)
Sub display : The following is switched and selected using the “right button”.
Conversion flow typeInstantaneous flow (m3/h)·Pressure (kPaG)
Temperature (°C)
Actual flow typeInstantaneous flow (m3/h)·working gas pressure setting
value (kPaG)·Temperature (°C)

Number of digits displayed
Main display
Forward accumulated flow volume [m3]:00000000.0*
3Forward trip accumulated flow volume [m ]: ト 0000000.0*
Unit: Selected by button operation and communication
When NORMAL flow isselected
NORMAL m 3

When standard flow is
selectedStandard m 3

9 digits
8 digits

When actual flow
is selectedm3* When Actual flow display (m3) is selected, "Forward accumulated flow volume" and"Forward trip accumulated flow volume" are displayed with 2 decimal places.
Sub displayInstantaneous flow [m 3/h]: 000.00 (less than 1000)
0000.0 (1000 or more and less than 10000)
00000 (10000 or more)
Unit: Selected by button operation and communication
When NORMAL flow is
selected
NORMAL m 3/h

When standard flow is
selectedStandard m 3/h

5 digits
5 digits
5 digits

When actual flow is
selectedm 3/hPressure [kPa]: 0000.0 (Type with pressure sensor)
5 digits
000.00 (Type without pressure sensor)
5 digits* In the type without pressure sensor, the working gas pressure setting value is displayed.
Temperature [°C]: 00.0

3 digitsContact output Nch open drain output 2 channels• Pulse output Nch open drain output 1 channel
Pulse unit
: 1000 L/P (initial setting value) (can be changed by button
operation)(can be changed to 10, 100, 1000 and 10000 L/P)
Maximum load
: 26.4 VDC·50 mA
Duty: 20 to 80%
Saturated voltage when ON : 1.5 V or lessCurrent when OFF : 50 μA or lessMaximum frequency : 10 Hz

Product Specifications

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Ultrasonic Flow Meter for Fuel Gas(External Power Supply 100 VAC
Type)Ver. 9Model

3/4

UX [Nominal diameter] - [Pressure]AC - [Flow direction] - [Gas type]• Alarm output Nch open drain output 1 channel
Accumulated value upper limit alarm and flow upper or lower limit alarm (either one isselected by button operation)
Accumulated value upper limit alarm
When the accumulated flow volume for 1 h becomes higher than the set accumulated
flow volume upper limit value, an alarm signal is output.
(The accumulated flow volume upper limit value can be set by communication.)*The 1 h measurement is started when the power supply is turned on.
Flow upper and lower limit alarm output
When the instantaneous flow becomes higher or lower than the set flow, an alarm
signal is output. (The alarm output upper and lower limit flow and alarm judgment value
hysteresis width can be set by button operation.)
Current output Output method: 4 - 20 mA Discharge method
Output accuracy : ±0.1 mA (flow measurement accuracy, temperature measurement
accuracy and pressure measurement accuracy are excluded)
External load: 400 Ω or less(“Instantaneous flow”, “Pressure” and “Temperature” can be switched by a button operationand communication.)
When instantaneous flow is selected[Forward flow display mode]
Zero output current: 4.0 mA (reverse flow to low flow cutoff)
Output current lower limit : 4.0 mA (clip at 4.0 mA)
Output current upper limit : 22.0 mA (clip at 22.0 mA)
Full scale flow (can be changed by button operation and communication)
Model
Initial settingvalue

Conversion flow type・・57

Actual flow type
・・58

UX40

UX50

UX40

UX50

300

600

80150

Unit: Correlated to unit of sub display value
When pressure is selected (conversion flow type only)
Output method: 4.0 mA: 0 kPa, 20.0 mA: 100 kPa (fixed)
Output current lower limit : 4.0 mA (clip at 4.0 mA)
Output current upper limit : 22.0 mA (clip at 22.0 mA)
When temperature is selected
Output method: 4.0 mA: -10°C, 20.0 mA: output as +60°C (fixed)
Output current lower limit : 2.0 mA (clip at 2.0 mA)
Output current upper limit : 22.0 mA (clip at 22.0 mA)
Communication Communication method: Half duplex communication method (RS485 communication)

Communication speed: 4800 bps, 9600 bps (Allowable range: ±1.0%)
Synchronization method : Asynchronous
Bit configuration: 8 bits, no parity, stop bit length 1 bit
Bit transmission order: Order from b0 to b7 (low order prioritized sending)
Error control: CRC*For the detailed communication specifications, download the communication
specifications from our website.
.
Measurable fluid
City gas (13A), butane (butane 70%, propane 30%),propane (propane 98%, butane 2%), nitrogen, argon

Product Specifications

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Ultrasonic Flow Meter for Fuel Gas(External Power Supply 100 VACType)

Ver. 9Model

4/4

UX [Nominal diameter] - [Pressure]AC - [Flow direction] - [Gas type]Working fluid temperature-10 to +60°C

Working pressure

0 to 100 kPa (gauge pressure)

Working ambient temperature-10 to +60°C

90%RH or less (there must be no condensation)

Storage ambient temperature-20 to +70°C

90%RH or less (there must be no condensation)

Power supply

100 VAC (85 to 115 VAC, 50/60 Hz) Power consumption: 10 W or lessProtection structure

IP 64 (JIS C0920: dust-proof, splash-proof type) which can be installed
outdoors

Flow direction

Free in upward, downward, left to right, and right to left (direction indicatedby arrow is forward flow)

Installation position

Horizontal or vertical (cannot be installed with the position that thedisplay portion faces downward or the cable introduction portion facesupward)
500 Pa or less (air, standard atmospheric pressure, at maximum flow)

Pressure drop
Mass

Model
Mass

UX40
4.7 kg

UX50
6.3 kgMaterial

 Measurement portion:Engineering plastic (PPS etc.)
 Outer casing:Stainless alloy
 Sensor rubber: FVMQ (Fluoro silicone rubber)
Display potion casing :Aluminum alloy*○ symbol indicates the gas contacting parts.

Standard working period

10 years (at ambient temperature of 20°C and ambient humidity of 65%RH)*10 years is not the warranty period.

Accessories

M4 Hexagonal wrench, sunshade cover(Optional Accessories)

OthersRoHS Directive compliant

2. Precautions in handling
2-1. Installation environment(1) Although the high weather-proof electronic display is adopted, in case of installation at a placesubjected to direct sunlight, provide a sunshade.
(2) Do not install the flow meter at a place with much electromagnetic noise, in corrosive atmosphere, orwith high humidity liable to cause dew condensation(3) This product is designed for outdoor installation, but avoid areas where there is a risk of water
submergence and water always splashes.
(4) The GND (signal ground) is connected to the casing. Take the following measures, as necessary.
・For DC24V type, use an insulation type power supply.
・Install a pulse isolator to isolate signals between the flow meter and a receiver.
・Use an insulating bolt, insulating washer, etc., to isolate the casing and pipes.
(5)The meters do not conform to ATEX (explosion-proof) directive (2014/34/EU).
2-2. Piping conditions(1) In case propane or butane is the fluid to be flown, make sure to use the flow meter under conditions
that the fluid does not become oil mist state due to re-liquefaction, etc.
(2) Even though the meter is installed indoor, it cannot be installed with the position that the display
portion faces downward or the cable introduction portion faces upward.
(3) When installing it at the upstream or downstream of the governor, install it 10D or more away fromthe governor.