Humidity Transmitter Wall Mounted – HK Instruments RHT Series

Features

  • 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
Enquiry

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 series device options offer:

  • 2” x 3” touchscreen display
  • Field configurable relay for any of the two parameters
  • Modbus configuration

RHT 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

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 with adjustable switching point and hysteresis
Operating temperature: 0…+50 °C
Protection standard: IP20

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HK Instruments RHT Series Humidity Transmitter Wall Mounted–Dpstargroup