HK Instruments RHT-MOD-D Humidity transmitters for building automation systems (T: 0...50 °C; rH: 0–100 %)

Measurement ranges: Temperature: 0...50 °C; Relative humidity: 0–100 %

Communication: RS-485 Modbus (RTU)

Accurary: 

Temperature: <0.5 °C 

Relative humidity: ±2…3 % rH at 0…50 °C and 10…90 % rH 

Total error band includes accuracy, hysteresis and temperature effect over 5...50 °C and 10–90 % rH 

Measuring units: °C, % rH

Measurement elements: Integrated temperature sensor, thermoset polymer capacitive sensing element for humidity

Supply voltage: 24 VDC/VAC ±10 %

Current consumption: max 90 mA (at 24 V) + 10 mA for each voltage output or 20 mA for each current output

Output signal for selected measurement: 0/2…10 V (linear to rH or T) (2–10 VDC display models only) or 4…20 mA (linear to rH or T)

Optional relay output: Potential free SPDT 250 VAC, 6 A / 30 VDC, 6 A with adjustable switching point and hysteresis

Operating temperature: 0...50 °C

Protection standard: IP20