Humidity Transmitter Wall Mounted – HK Instruments RHT-MOD Series

Features

  • Separate field configurable Modbus output for each measurement parameter (rH, T)
  • Offset feature enabling field calibration for each measurement parameter (rH, T)
  • One analog output for selected measurement: voltage (0/2–10 V) and current (4–20 mA)
  • Optional relay output
Enquiry

Humidity transmitters for building automation systems that use Modbus serial communication protocol

RHT-MOD 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. Configuration is also possible via Modbus network.

Applications

RHT-MOD series devices are commonly used to monitor:

  • Humidity and temperature levels in offices, public spaces, hospitals, meeting rooms and classrooms
  • Humidity and temperature in various commercial applications
  • Humidity and temperature in HVAC/R environment

Specification

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 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 for selected measurement 0/2…10 V (linear to rH or T) 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

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HK Instruments RHT-MOD Series Humidity Transmitter Wall Mounted-DpstarGroup