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The Series RHPX Humidity and Temperature Transmitter provides precise monitoring of humidity and temperature for building control applications, helping optimize occupant comfort while reducing operating costs.
The Series RHPX Humidity and Temperature Transmitter provides precise monitoring of humidity and temperature for building control applications, helping optimize occupant comfort while reducing operating costs.
The Series RHPX Humidity and Temperature Transmitter delivers accurate humidity and temperature measurement for building control applications, supporting improved occupant comfort and reduced operating costs. Using capacitance polymer humidity sensors, models are available with 2% or 3% accuracy. An optional two-line alphanumeric LCD display provides clear local readout. With high accuracy, long-term stability, and reliable performance across multiple enclosure styles, the Series RHPX is well suited for building energy management systems, commercial HVAC applications, clean rooms, museums, and data centers. Optional configurations allow output of absolute or relative humidity, dew point, and enthalpy in addition to temperature.
Features
Applications
| Humidity Measurement Range: | 0 % to 100 % humidity. |
| Temperature Measurement Range: | -40 °C to 60 °C (-40 °F to 140 °F). |
| Humidity Sensor Accuracy: | Model specific, ±2 % or ±3 %, at 10 % - 90 % RH and 25 °C (77 °F). |
| Temperature Sensor Accuracy: | Thermistor: ±0.2 °C at 25 °C (±0.36 °F at 77 °F); RTD: DIN class B ±0.3 °C at 0 °C (±0.54 °F at 32 °F); solid state band gap: ±0.5 °C at 25 °C (±0.9 °F at 77 °C). |
| Resolution: | Relative humidity: 0.1%; temperature: 0.1°F/°C; absolute humidity: 0.1 g/m3). |
| Humidity Analog Output: | 4-20 mA or 0-5 V dc, 0-10 V dc at 5 mA max, field selectable. |
| Active Temperature Analog Output: | 4-20 mA or 0-5 V dc, 0-10 V dc at 5 mA max, field selectable. |
| Passive Temperature sensors: | Types II and III: Solid state band gap; Curves A, B, and F: Thermistor; Curves D and E: Platinum RTD DIN 385, Balco 1K (model specific, not available with remote humidity sensor) model dependent. |
| Network Communication: | BACnet MS/TP protocol or Modbus® RTU. |
| Supported BAUD Rates: | 9600, 19200, 38400, 57600, 76800, 115200. |
| Termination Load: | 120 ohm (communicating models only). |
| Operating Temperature Range: | -40°C to 60°C (-40°F to 140°F); With LCD: -20°C to 60°C (-4°F to 140°F). |
| Power Requirements: | Communications model: (14 to 35) V dc, (10 to 32) V ac; Analog model: 4-20 mA: (10 to 35) V dc; Voltage output: (15 to 35) V dc or (15 to 29) V ac. |
| Wiring Connection: | Removable terminal block. |
| Conduit Connection: | 1/4 ? or 1/2 ? NPS. |
| Humidity Sensor: | Capacitive polymer. |
| Enclosure Material: | UL 94 V-0. |
| Enclosure Rating: | IP66. |
| Optional Display: | Two (2) lines of alphanumeric characters with eight (8) characters per line. |
| Weight: Duct: | 198.4 g (0.44 lb); wall mount: 170 g (0.38 lb); large housing: 340.2 g (0.75 lb); large housing with rad shield: 1247.4 g (2.75 lb). |
| Storage Temperature: | -40°C to 70°C (-40°F to 158°F); With LCD: -30°C to 70°C (-22°F to 158°F). |
| Additional calculations: | Absolute humidity: (0 to 50) g/m3 or (0 to 3000) lb/mmcf; dew point -75 °C to 60 °C (-102 °F to 140 °F); enthalpy (-40 to 411) kj/kg or (-17 to 177) Btu/lb. |
| Compliance: | BTL, CE, UL 2043*, UL-60335-2-40**. |
| Humidity Measurement Range: | 0 % to 100 % humidity. |
| Temperature Measurement Range: | -40 °C to 60 °C (-40 °F to 140 °F). |
| Humidity Sensor Accuracy: | Model specific, ±2 % or ±3 %, at 10 % - 90 % RH and 25 °C (77 °F). |
| Temperature Sensor Accuracy: | Thermistor: ±0.2 °C at 25 °C (±0.36 °F at 77 °F); RTD: DIN class B ±0.3 °C at 0 °C (±0.54 °F at 32 °F); solid state band gap: ±0.5 °C at 25 °C (±0.9 °F at 77 °C). |
| Resolution: | Relative humidity: 0.1%; temperature: 0.1°F/°C; absolute humidity: 0.1 g/m3). |
| Humidity Analog Output: | 4-20 mA or 0-5 V dc, 0-10 V dc at 5 mA max, field selectable. |
| Active Temperature Analog Output: | 4-20 mA or 0-5 V dc, 0-10 V dc at 5 mA max, field selectable. |
| Passive Temperature sensors: | Types II and III: Solid state band gap; Curves A, B, and F: Thermistor; Curves D and E: Platinum RTD DIN 385, Balco 1K (model specific, not available with remote humidity sensor) model dependent. |
| Network Communication: | BACnet MS/TP protocol or Modbus® RTU. |
| Supported BAUD Rates: | 9600, 19200, 38400, 57600, 76800, 115200. |
| Termination Load: | 120 ohm (communicating models only). |
| Operating Temperature Range: | -40°C to 60°C (-40°F to 140°F); With LCD: -20°C to 60°C (-4°F to 140°F). |
| Power Requirements: | Communications model: (14 to 35) V dc, (10 to 32) V ac; Analog model: 4-20 mA: (10 to 35) V dc; Voltage output: (15 to 35) V dc or (15 to 29) V ac. |
| Wiring Connection: | Removable terminal block. |
| Conduit Connection: | 1/4 ? or 1/2 ? NPS. |
| Humidity Sensor: | Capacitive polymer. |
| Enclosure Material: | UL 94 V-0. |
| Enclosure Rating: | IP66. |
| Optional Display: | Two (2) lines of alphanumeric characters with eight (8) characters per line. |
| Weight: Duct: | 198.4 g (0.44 lb); wall mount: 170 g (0.38 lb); large housing: 340.2 g (0.75 lb); large housing with rad shield: 1247.4 g (2.75 lb). |
| Storage Temperature: | -40°C to 70°C (-40°F to 158°F); With LCD: -30°C to 70°C (-22°F to 158°F). |
| Additional calculations: | Absolute humidity: (0 to 50) g/m3 or (0 to 3000) lb/mmcf; dew point -75 °C to 60 °C (-102 °F to 140 °F); enthalpy (-40 to 411) kj/kg or (-17 to 177) Btu/lb. |
| Compliance: | BTL, CE, UL 2043*, UL-60335-2-40**. |
