Proportional, high capacity, single or dual input pneumatic controller used in conjunction with remote sensors to provide proportional (P) or proportional plus integral (P+I) control of temperature, humidity, pressure, or dewpoint for heating and air conditioning systems. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell controllers.

  • Proportional plus integral control option minimizes offset.
  • Miniature diaphragm technology provides high degree of accuracy and reliability.
  • Direct Acting models can be converted to Reverse Acting (RA) function in field.
  • Field adjustable compensation start point.
  • Local or remote setpoint field option. Integral action cut-off provides trouble-free automatic startup.
  • Transparent cover (optional) provides protection while allowing easy reading of settings and gages.
  • Corrosion resistant construction.

  • Application: Proportional plus integral pneumatic controller
  • Remote bulb sensor: No
  • Action: Direct Acting
  • Airflow Usage: 0.07 scfm (33.0 mL/s) with 1 psi (7kPa) pressure drop at 18 psi (124 kPa) main air supply
  • Capacity: at 18 psi (124 kPa) MLP and 8.5 psi (59 kPa) BLP (does not include sensor usage): 0.021 scfm (10 mL/s)
  • Maximum Safe Operating Pressure (psi): 30 psi
  • Maximum Operating Temperature (F): 130F
  • Remote Control Point Adjustment: no
  • Operating Humidity Range (% RH): 5 to 95%
  • Input Signal: 3 to 15 psi
  • Output Pressure Range: 3 to 13 psi, output signal maximum is Mainline Pressure minus 1/2 psi
  • Temperature Range (F): 40 F to 130 F
  • All RP920s can be converted to reverse acting in the field. For additional technical information see literature Form no. 85-0224 and 95-7392EF.
  • Maximum Safe Mainline Pressure (psi): 30 psi
  • Mainline Pressure Range (psi): 17 to 21 psi
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Sensor Inputs:
Single Input plus Integral Control
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