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Digital Display Flow Meters for Low Flow Gases - RW3

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    The digital display is a loop powered flow meter for gases with a built in wet/wet differential pressure sensor protected by an isolated stainless steel diaphragm which provides a 4-20mA DC signal proportional to the flow rate squared. A scaled pulse output according to accumulated total. The digital display requires a 24Vdc power supply not included (PS-24 Option). Optional backlighting (green & amber) can be added for low light conditions. 

    How To Order

    Standard Specifications:
    Accuracy: ± 3% F.S.
    Repeatability: ± 1% F.S.
    Pressure Max.: 180 psig (12.6 kg/cm2)
    Pressure Min.: 10 psig (0.67 kg/cm2)
    Temp. Max.: 212ºF (100ºC)
    Temp. Min.: -30ºF (-34ºC)
    IP67 / NEMA 4X Rated Enclosure

    Electrical Rating:
    Power Input:

    100mA, 24Vdc power supply (Not Included)
    Input loop powered from 4-20mA signal. Voltage drop max. 2.6V

    Display:
      High intensity reflective numeric and alpha numeric LCD, UV resistant
      User definable, 8 times/sec. - 30 secs.
      Password Protection
      7 and 11 digit various symbols and measuring units


      Environmental:
      Operating Temperature: -30ºF (-34ºC) to 212ºF (100ºC)
      Humidity: 0-90% Noncondensing

      Accuracy:
      0.5% F.S. (Non-linearity, Repeatability and Hysteresis
      Stability:
      0.5% F.S./year

      Signal Inputs:
      Full Scale Range: 4 to 20 mA DC
      Loop Voltage Drop: 2.6 Volts Maximum
      Update Time: 4 times/sec.
      Span: 0.001/999,999 with available decimal position
      16 Bit resolution: error <0.01mA/+- 0.05% F.S.
      Low cutoff supplied to inhibit indications at low flow rates


    Signal Ouput:
    The pulse output transmitting accumulated total
    Type: one passive transistor output (NPN) 
      Max. 500Hz pulse length user definable between 1msec. up to 10secs.

      Calibration & Operation:
      Input Scaling: Via front keypad
      Decimal Point: Via front keypad
      Reset Input: Via front keypad or remote dry contact closure
      Keypad: 3 tactile feedback keys




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