Product Specifications

Ver. 4Ultrasonic Flow Meter for Air(External Power Supply Type)

Reliability
Creativity ServiceModel

1/6

TRX [Nominal diameter] D / [Gastype] / 5P / [Degreasing process]1. Specifications
 ModelTRX [Nominal diameter] D / [Gas type] / 5P / [Degreasing process]Nominal diameter 25 (25A) 32 (32A) 40 (40A) 50 (50A) 65 (65A) 80 (80A)

Gas type C (factory air) N (nitrogen)

Degreasing process
 No description (noprocess) K (degreasingprocess)Flow-rate range (Actual flow-rate) (Accuracy guaranteed scope)
Model
Flow rate
range

TRX25

TRX32

TRX40

TRX50

TRX65

[m3/h]
TRX80±0.6 to 35±1.1 to 65±1.3 to 80±2.5 to 150±4 to 240

±5 to 300

Accuracy (Actual flow-rate)

Accuracy• Flow-rate measurement accuracy
Model±5%RD±2%RD

TRX25±0.6 to 3.5±3.5 to 35

TRX32±1.1 to 6.5±6.5 to 65

TRX40±1.3 to 8±8 to 80

TRX50±2.5 to 15±15 to 150

TRX65±4 to 24±24 to 240[m3/h]
TRX80±5 to 30±30 to 300• NORMAL conversion± 2.5%RD (0.5MPa, ordinary temperature and, dry air or nitrogen)Low flow cutoff (Actual flow rate) Can be Changeable by button operation (0 ≤ Setting value < Qmin)[m3/h or less]Model
TRX25 TRX32 TRX40 TRX50 TRX65 TRX80
Initial setting value±0.1±0.2±0.2±0.4±0.6±0.8

Response-ability Update interval : 0.5 second
Smoothing of instantaneous flow rate value by moving average method (Initial setting value: 4times)"" is selectable item.
.

Product Specifications
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Display

Ultrasonic Flow Meter for Air(External Power Supply Type)

Ver. 4Model

2/6

TRX [Nominal diameter] D / [Gastype] / 5P / [Degreasing process]Main display: The following is switched and selected using the “left button”.
[When forward flow display mode *1) is selected]
Accumulated flow volume (Forward flow) (m3)·Trip accumulated flow volume (Forward flow)(m3)·Instantaneous flow-rate (L/min)*2)[When reverse flow display mode *1) is selected]
Accumulated flow volume (Forward flow) (m3)·Accumulated flow volume (reverse flow)(m3)·Instantaneous flow-rate (L/min)*2)
Sub display: The following is switched and selected using the “right button”.
Instantaneous flow-rate (m3/h)·Pressure (kPa) (gauge pressure)·Temperature (°C)*1) The display mode is selected by button operation.
*2) If an instantaneous flow-rate (L/min) is displayed, the main display (Accumulated flowrate) and sub display (Instantaneous flow rate (m3/h) , pressure (kPa) andtemperature (°C)) are not displayed.

Number of digits displayed
Main display
Accumulated flow volume (Forward flow) [m3]
Trip accumulated flow rate (Forward flow) [m3]
Accumulated flow rate (Reverse flow) [m3]Instantaneous flow rate [L/min]Unit: Selected by button operation and communication
When NORMAL flow isselected
m3 (NORMAL)

When standard flow is
selected
m3 (Standard): 00000000.0:ト 0000000.0: -0000000.0:00000.00

9 digits
8 digits
8 digits
7 digits

When actual flow
is selectedm3Note) In case actual flow display (㎥) is selected for "accumulated flow volume (forward flow)","trip accumulated flow volume (Forward flow)", and "accumulated flow volume (Reverseflow)", it is displayed to the second decimal point.

Sub display
Instantaneous flow-rate [m3/h]: 000.00 (less than 1000)
0000.0(1000 or more and less than 10000)
00000 (10000 or more)
Unit: Selected by button operation
When NORMAL flow isselected
m3 (NORMAL)

When standard flow isselected
m3 (Standard)Pressure [kPa]: 0000.0

5 digits

Temperature [°C]: 00.0

3 digits

When actual flow
is selected

m35 digits
5 digits
5 digits

Product Specifications
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Ultrasonic Flow Meter for Air(External Power Supply Type)

Ver. 4Model

3/6

TRX [Nominal diameter] D / [Gastype] / 5P / [Degreasing process]Electric current output

Output method: 4-20 mA Two-wire type
Power supply voltage : 24 VDC±10% Power consumption: 0.6 W or less
Output accuracy: ±0.5%FS
External load
: 400 Ω or less("Instantaneous flow-rate","Pressure", and "Temperature" can be switched by button operation.)
When instantaneous flow-rate 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)[Forward/reverse flow display mode]
Zero output current: 12.0 mA (Within low flow cutoff)
Output current lower limit : 3.5 mA (Clip at 3.5 mA)
Output current upper limit : 22.0 mA (Clip at 22.0 mA)
Full scale flow rate (Can be changed by button operation)
Model
TRX25 TRX32 TRX40 TRX50 TRX65
Initial setting
300
600
700
1200
2000
value

TRX80
2500

When pressure is selected
Output method: Output as 4.0 mA: 0 MPa, 20.0 mA: 1 MPa (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: Output as 4.0 mA: -10°C, 20.0 mA: +60°C (Fixed)
Output current lower limit : 3.5 mA (Clip at 3.5 mA)
Output current upper limit : 22.0 mA (Clip at 22.0 mA)

Product Specifications
Ultrasonic Flow Meter for Air(External Power Supply Type)

Reliability
Creativity Service

Ver. 4Model

4/6

TRX [Nominal diameter] D / [Gastype] / 5P / [Degreasing process]Contact output Open drain output 2 channels
Output 1: Unit pulse output (Forward flow)
Output 2: Unit pulse output (Reverse flow), flow rate upper and lower limit
alarm output, body error output, telegram output(Either one is selected by button operation)
Maximum load
: 26.4 VDC·50 mA
Saturated voltage when ON : 1.5 V or lessCurrent when OFF: 50 μA or lessPulse output
Unit pulses in accordance with increase of the accumulated flow volume are output.
Pulse unit
: 100 L/P (Initial setting value)(Can be changed by button operation)
Maximum output frequency: 10 Hz
Output type
: One shot or duty (Can be changed by button operation)
One shot pulse width : 50, 100, 125, 250, 500 ms (Can be changed by button operation)
Duty: 35 to 65%
Flow-rate upper and lower limit alarm output
When the instantaneous flow-rate becomes higher or lower than the set flow rate, an alarm
signal is output.
(The alarm output upper and lower limit flow rate and alarm judgment value hysteresis
width can be set by a button operation.)
Body error output
An alarm signal is output when a flow-rate measurement error, pressure value error,temperature value error or communication circuit error is detected.
Telegram statement
Measurement data are transmitted using telegrams at regular time intervals (10 minutes)
Telegram type: Asynchronous 2400 bps
Transmitted data: Accumulated flow volume (Forward flow), accumulated flow rate
(Reverse flow), instantaneous flow rate, pressure, temperature and error information
Measurable fluid

Air (Mainly factory air) or nitrogen

Working fluid temperature-10 to +60°C, 90%RH or lessWorking pressure

0 to less than 1MPa (Gauge pressure)

Working environment-10 to +60°C, 90%RH or less (There must be no condensation)

Storage environment
Power supply-20 to +70°C (There must be no condensation)
24 VDC±10% Power consumption: 1.5 W or less

Flow direction

Forward and reverse flows can be measured (Direction indicated by the arrow isforward flow.)

Connection
type

ModelConnection
type

TRX25
Taper pipe thread

TRX32(Screw-in)

TRX40

TRX50

TRX65
TRX80
Wafer
(Installed and tightened between JIS10K flanges)

Installation position

Horizontal (LCD display portion faces upward) or vertical

Pressure drop

Extremely low (Equivalent to a straight pipe)

Protection structure

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

Product Specifications
ReliabilityCreativity Service

Ultrasonic Flow Meter for Air(External Power Supply Type)

Ver. 4Model

5/6

TRX [Nominal diameter] D / [Gastype] / 5P / [Degreasing process]

Mass
Model
Mass
Material

TRX25
1.5 kg

TRX32
1.4 kgTRX40
1.0 kg

TRX50
1.2 kg

TRX65
1.4 kg

TRX80
1.7 kg Measurement portion : Engineering plastic (Such as PPS), aluminum alloy Outer casing: Aluminum alloy
 Sensor rubber: FVMQ (Fluoro silicone rubber)
Display portion casing : Aluminum alloy*○ symbol indicates the gas contacting parts.
In the case of a degreasing process product, a degreasing process has been
performed for gas contacting parts.
(For details, refer to “3. Degreasing process”.)

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 wrenchCentering collar (Wafer type only)
Flange gasket (Wafer type only)
Bolt set (Wafer type only)
Power supply / output cable (Six-core cable) [option]
 Cable length:  5 m
 20 mWire connection: Open drain output 1
WhiteOpen drain output 2Yellow
4 to 20 mA output (+)
Red
4 to 20 mA output (-)
Green
Communication ····Brown
GND ··················
Black"" is selectable item.

OthersCE marking, UKCA marking, RoHS Directive compliant

Product Specifications
Reliability
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Ultrasonic Flow Meter for Air(External Power Supply Type)

Ver. 4Model

6/6

TRX [Nominal diameter] D / [Gastype] / 5P / [Degreasing process]2. Precautions in handling
2-1. Installation environment(1) Although the high weather-proof electronic display is adopted, in case of installation at a place subjected todirect .
(2) Do not install the flow meter at a place with much electromagnetic noise or in corrosive atmosphere.
(3) This product is designed for outdoor installation, but avoid areas where there is a risk of water
submergence and water always splashes.
(4) When opening or closing a valve before and after the flow meter, open or close the valve not all at once butgradually.
2-2. Piping conditions(1) To realize stable measurement, it is recommended to install a straight pipe portion of 20 D or more (D:nominal diameter) at the upstream and downstream sides of the flow meter.
(2) In case large amount of mist, dust, etc., are contained in the fluid, install the flow meter by vertical piping.
In the case of horizontal piping, install the flow meter so that the display part faces upward.
(3) In case installation of the product near a pressure reducing valve or a flow adjusting valve is planned,contact us in advance.
3. Decreasing process
In the case of a degreasing process product, the followings are the degreasing processes for the gas contacting
parts.
(1) Ultrasonic cleaning degreasing process by degreasing cleaning liquid
For gas contacting parts (Other than the following specified parts), after immersion in degreasing cleaning
liquid and performing ultrasonic cleaning, the cleaning liquid attached to the parts surfaces are to beremoved with tap water (Running water).
(2) Degreasing process by alcohol wiping
After wiping the following specified parts with hand towels containing alcohol, they are wiped again withhand towels containing tap water.
<Specified parts>
Ultrasonic sensor, pressure sensor unit’s pressure introduction portion outside wall surface,heat shrinkable tube