RHT Humidity transmitters for building automation systems

RHT Humidity transmitters for building automation systems

RHT relative humidity transmitters are engineered for building automation systems in the HVAC/R industry. The RHT measures relative humidity (rH), and temperature (T). RHT devices are available with large touchscreen display making configuration of the device quick and easy.

RHT devices include:
• Separate field configurable output for each measurement parameter (rH and T)
• Proportional output options including: voltage (0–10 V, 2–10 V) and current (4–20 mA)
• Optional relay output and Modbus communication

Brand : HK Instruments


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:Pt1000 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 1:0/2…10 V (linear to rH), L min 1 kΩ or
4…20 mA (linear to rH), L max 500 Ω
Output signal 2:0/2…10 V (linear to Temp), L min 1 kΩ or
4…20 mA (linear to Temp), L max 500 Ω
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






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