Separate Amplifier Type Air Flow SensorFD-V40 series


Sensor Head, Air/Nitrogen Detection Type, 1 L/min


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For air or nitrogen (N2)

Detection range

30 to 1000 mℓ/min (std)*1

Zero-cut flow rate

30 mℓ/min (std)

Fluid type

Air, nitrogen (N2)

Detectable fluids

Clean gas that does not contain dust or oil mist (When compressed air is used, air that conforms to ISO class of 1.1.2 through 1.6.2 is allowable)*2

Pressure resistance

1.0 Mpa

Applied pressure range

-0.07 to 0.7 MPa

Detectable fluid temperature

0 to +50°C 32 to 122°F (No condensation, no freezing)

Connection bore diameter

Rc (PT) 1/4

Display power

Flow rate indicator --- Green LED (x4). Output indication --- Red LED

Environmental resistance

Operating temperature range

0 to +50°C 32 to 122°F(no freezing)

Operating ambient humidity

10 to 85 % RH (No condensation)


10 to 55 Hz, 1.5 mm 0.06" double amplitude in the X, Y, and Z directions, 3 hours respectively*3

Impact resistance

300m/s2 10 times for X, Y, Z axis. Total 60 times


Measuring pipe section : Aluminum, SUS303, SUS304, polyetherimide, Fluorocarbon rubber, SiliconPiping section : Diecasting aluminum alloy, Case: Polysulfon, PBT


Head connector x 1Switch-unit sticker x 1


Approx 125 g (including 3-m connector cable)

*1 Converted value assuming the integrated flow quantity under the conditions of 20°C 68°F at 1 atmospheric pressure 101.3 kPa.
*2 Quality grade of compressed air based on the ISO8573-1Water content values shown in the bracket indicates the dew point temperature at atmospheric pressure.E.g. The “Class 1.2.3” indicates the rating of 0.1 µm 0.004 Mil of the solid particle. –40°C -40°F of dew point under the pressure and 1 mg/m3 oil density.
*3 While the FD-B03 is used, Compound amplitude is 0.45 mm 0.02".

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Process Controls / Process Sensors