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          Digital Pressure SensorAP-20 series

          AP-21A

          Main Unit, Negative-pressure Type, -99 kPa

          [Discontinued model]

          This model has been discontinued.

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          SPECIFICATIONS

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          Model

          AP-21A

          Type

          LED-type digital pressure sensor (negative-pressure model)

          Rated pressure

          0 to -760 mmHg, 0 to -99 kPa, 0 to -14.5 PSI, 0 to -1.00 bar

          Fluid type

          Air or non-corrosive gases

          Type of pressure

          Gage pressure

          Display

          3-digit 7-segment LED (character height: 8 mm 0.315")*1, display cycle: 5 times/sec.

          Repeatability

          ±1 % of F.S. or less

          Response

          5 ms

          Temperature characteristics

          ±3 % of F.S. or less of the detected pressure at 25 °C 77 °F within the temperature range of 0 to +50 °C 32 to 122 °F.

          Display resolution

          5 mmHg/1 kPa/0.1 psi/0.01 bar

          I/O

          Control output

          Maximum NPN open-collector output: 100 mA (40 V or less), residual voltage: 1 V or less, 2 outputs

          Rating

          Power voltage

          12 to 24 VDC ±10 %, Ripple (P-P) 10 % or less

          Current consumption

          45 mA or less

          Environmental resistance

          Pressure resistance

          5 kgf/cm2*1

          Ambient temperature

          0 to +50 °C 32 to 122 °F

          Relative humidity

          35 to 85 % RH (No condensation)

          Vibration resistance

          10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions

          Shock resistance

          100 m/s2 (Approx. 10 G), 3 times in each of the X, Y, and Z directions

          Material

          Front case: polycarbonate, pressure port: die-cast zinc

          Weight

          Main unit: Approx. 65 g (excluding the cable; Approx. 105 g including the 2 m cable)

          *1 When the AP-21A is in the "Std," "psi," or "bar" unit mode, negative pressure is not displayed with a minus sign.

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