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          Separate Amplifier Type Air Flow SensorFD-V40 series

          FD-A250

          Sensor Head, Air/Nitrogen Detection Type, 250 L/min

          SPECIFICATIONS

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          Model

          FD-A250

          Type

          For air or nitrogen (N2)

          Detection range

          7 to 250L/min (std)*1

          Zero-cut flow rate

          7 L/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

          Detectable fluid temperature

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

          Connection bore diameter

          Rc (PT) 1/2

          Display power

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

          Environmental resistance

          Pressure resistance

          1.0 MPa

          Applied pressure range

          -0.07 to 0.7 MPa

          Ambient temperature

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

          Relative humidity

          10 to 85 % RH (No condensation)

          Vibration resistance

          10 to 55 Hz, Double amplitude 0.75 mm 0.03", 3 hours in each of the X, Y, and Z axis*3

          Shock resistance

          300 m/s2, 10 times in each direction of each of X, Y and Z axis, 60 times in total

          Material

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

          Accessories

          Head connector x 1

          Weight

          Approx. 190 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 ISO8573-1
          Water 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, is 0.45 mm 0.02".

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