HK Instruments RHT-MOD Series – Humidity Transmitter Wall Mounted

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
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HK Instruments RHT-MOD Series – Humidity Transmitter Wall Mounted for building automation systems that use Modbus serial communication protocol

HK Instruments RHT-MOD relative humidity transmitters are specifically designed for integration into building automation systems within the HVAC/R industry. These transmitters accurately measure relative humidity (rH) and temperature (T). Equipped with a spacious touchscreen display, RHT devices facilitate swift and effortless configuration. Additionally, configuration can be conveniently performed via a 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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