Room Pressure Monitor
RP Series



  • Ranges ± 1" W.C. to ± 0.125 “wc W.C. (± 250 Pa to ± 30 Pa)
  • Jumper selectable outputs
  • Precision silicon sensor
  • 24 Vac/dc power supply standard
  • Functional and attractive enclosure
  • Available options include an LCD display & alarm output
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    The RP series Room Pressure Monitor is used to measure differential pressure in the range of 0.125 to 1” wc or 30 to 250 Pa. It combines precision high sensitivity silicon sensing capabilities and the latest ASIC technology to substantially reduce offset errors due to changes in temperature, stability to warm up, long term instability and position sensitivity. It features an LCD to display the pressure value, several bi-directional pressure ranges and field-selectable output signal types for the most flexible application. The device has an on-board auto-zero function as well as a connection for remote zeroing. It also features an optional alarm output with a variable trip point, a remote buzzer output with silence switch and a flashing alarm LED.



    Pressure Ranges ± 1 “wc, ± 0.5 “wc, ± 0.25 “wc, ± 0.125 “wc
    ± 250 Pa, ± 125 Pa, ± 60 Pa, ± 30 Pa
    Calibration Accuracy ± 1% F.S.O. (+/-2% F.S.O. for 0.125”wc and 30 Pa ranges)
    Measurement Types Differential (two ports)
    Response Time .0.5 Sec
    Thermal Effects < ±3.5% over compensated range
    Compensated Range 0 – 70° C (32 – 158° F)
    Over Pressure 100" W.C. (24.9 kPa)
    Operating Conditions 0 – 70° C (32 – 158° F), 10 – 90% RH non-condensing
    Power Supply
    (at transducer)     		15 - 27 Vac, 20 – 35 Vdc (non-isolated half-wave rectified)
    Supply Current < 30mA (base model), 50mA (with alarm options),
    70mA (with buzzer connected)
    Input Voltage Effect Negligible over specified operating range
    Protection Circuitry Reverse voltage protected and output limited
    Output Signal 4 – 20 mA (3-wire), 0 – 5 Vdc or 0 – 10 Vdc (3-wire), jumper selectable
    Current Output
    Drive Capability     		550 ohms
    Voltage Output
    Drive Capability     		2 Kohms minimum
    Zero Adjustment Push button auto-zero (On device or Remote)
    Optional Relay Output N.O. contact, 2.5 Amps @ 120 Vac, 2.5 Amps @ 30 Vdc
    Relay Trip Point Adjustable from ZERO to SPAN via trimport
    Relay Delay 5 seconds on / 5 seconds off
    Wiring Connections Screw terminal block (14 to 22 AWG)
    Pressure Connections .1/8” ID Flexible tubing
    Conduit Connection Access hole for 1/2” NPT conduit or cable gland
    Display 3.5 digit, 10 mm (0.4") digit height
    Enclosure Executive Space, 2.8" W x 4.7" H x 1.25" D (71 x 119 x 32mm)
    Weight .110 grams (3.9 oz)


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