Dwyer Series RHP

Application Note:

For duct mount installations, the sintered filter option should be ordered for applications where the humidity transmitter is mounted in the supply air duct after the fan and cooling coils.


Relative Humidity Range: 0 to 100% RH.

Temperature Range: -40 to 140°F (-40 to 60°C).

Accuracy, RH: Model RHP-2XXX ±2% 10-90% RH @ 25°C; Model RHP-3XXX ±3% 20-80% RH @ 25°C.

Accuracy, Thermistor Temp Sensor: ±0.22°C @ 25°C (±0.4°F @ 77°F).

Accuracy, RTD Temp Sensor: DIN Class B; ±0.3°C @ 0°C (±0.54°F @ 32°F).

Hysteresis: ±1%.

Repeatability: ±0.1% typical.

Temperature Limits: -40 to 140°F (-40 to 60°C).

Storage Temperature: -40 to 176°F (-40 to 80°C).

Compensated Temperature Range: -4 to 140°F (-20 to 60°C).

4-20 mA Loop Powered Models: Power Requirements: 10-35 VDC. Output Signal: 4-20 mA.

0-5/10V Output Models: Power Requirements: 15-35 VDC or 15-29 VAC. Output Signal: 0-10V @ 5 mA max.

Response Time: 15 seconds.

Electrical Connections: removable screw terminal block.

Conduit Connection: Duct Mount: 1/2″ NPS; OSA: 1/2″ (22.3 mm).

Drift: <1% RH/year.

RH Sensor: Capacitance polymer.

Temperature Sensor: Curves A,B,C; Thermistor; Curves D,E; Platinum RTD DIN 385. (See R-T Lookup Table).

Enclosure: Duct Mount: PBT; OSA: Polycarbonate.

Enclosure Rating: NEMA 4X (IP65) for OSA mount only.

Display: Duct Mount only, Optional 2-line alpha numeric, 8 characters/line.

Display Resolution: RH: 0.1%; 0.1°F (0.1°C).

Weight: Duct Mount: .616 lb (.3 kg) OSA: 1 lb (.45 kg).

Agency Approvals: CE.