Clamp-on Micro Flow SensorFD-X series


Controller DIN rail type, main unit


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DIN rail type, main unit

Display method

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

Display refresh frequency

Approximately 5 times/second

Response time

50 ms/100 ms/500 ms (selectable, default: 500 ms)

Memory back up

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

Detection mode


Instantaneous flow rate mode


Error output mode



NPN/PNP selectable
Open collector output: 30 V or lower, main unit: 50 mA or lower/ch.*1/expansion unit: 20 mA or lower/ch., residual voltage: 2 V or lower

External input

Flow rate zero input/zero shift input (switchable)
Short circuit current: NPN 1 mA or lower/PNP 2 mA or lower, input time: 20 ms or longer

Network support


Protection circuit

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

Addition of expansion units

Up to 7*2 per main unit

Power supply

Power voltage

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

Power consumption

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

Environmental resistance

Ambient temperature for usage

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

Ambient humidity for usage

35 % to 85 %RH (No condensation)

Vibration resistance

10 to 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 20 mA or lower/ch when adding expansion units.
*2 Consult the manual for the number of serially-connectable devices to the N-bus.

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Process Controls / Process Sensors