Clamp-on Micro Flow Sensor

FD-X series

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Controller DIN rail type, main unit FD-XA1

FD-XA1 - Controller DIN rail type, main unit

  • CE Marking
  • CSA





DIN rail type, main unit

Display method

Output indicator, 4-digit 7 segment display, OLED, Stability level display

Display refresh frequency

Instantaneous flow: approx. 5 times/second, Discharge amount/Accumulated flow approx. 30 times/second

Response time

50 ms/100 ms/500 ms/1 s/2.5 s/5 s/10 s/30 s/60 s (selectable, default: 500 ms)

Integration data storage interval

Written to the memory every 10 seconds

Memory back up

EEPROM (data storage period: more than 10 years, number of data rewritable times: 1 million times or more) *1

Detection mode


Instantaneous flow rate mode/Area mode/Pulse output (+) mode/Integrated flow mode/Shot mode (selectable)


Instantaneous flow rate mode/Area mode/Pulse output (-) mode/Shot mode/Error output mode/Bubble alert mode/Error + bubble alert mode (selectable)



NPN/PNP setting switch
Open collector output: 30 V or lower, main unit: 50 mA or lower/ch.*2/expansion unit: 20 mA or lower/ch., residual voltage: 2 V or lower

Analog output

4-20 mA/0-20 mA (selectable) load resistance: 500 ohms or lower

External input

Flow rate zero input/shot sampling input/integrated flow reset input/zero shift input (selectable)
Short circuit current: NPN 1 mA or lower/PNP 2 mA or lower, input time: 20 ms or longer

Network support


Unit expansion

Up to 7*4 per main unit

Protection circuit

Power supply reverse connection protection, power surge protection, output short circuit protection, output surge protection

Power supply

Power voltage

20 to 30 VDC including 10 % ripple (P-P) , Class 2

Power consumption

195 mA or lower (including the sensor head, excluding the load current)

Environmental resistance

Ambient temperature

-10 to +50 °C (No freezing) 14 to 122 °F

Relative humidity

35 % to 85 %RH (No condensation)

Vibration resistance

10 - 55 Hz, double amplitude 1.5 mm 0.06 ", 2 hours each for X,Y,Z direction

Shock resistance

100 m/s2 (approx. 10 G) 16 ms pulse, 1000 times each for X,Y,Z direction


Main body case/front sheet: PC, Key top: POM, Cable: PVC


Approx. 210 g

*1 Internal data from full time recording can be read via USB (Ver.2.0) communication.
*2 20 mA or lower/ch when adding expansion units.
*3 IO-Link: Specification v1.1/COM2 (38.4 kbps) is supported. If the end of the cable needs to be an M12 connector when supporting IO-Link communication, connect an M12 conversion connector (OP-88296) to the cable.
*4 Refer to the Instruction Manual for the number of connected units to N-bus devices.

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