RHT-MOD Duct

Humidity transmitters with temperature output for duct that use Modbus serial communication protocol

RHT-MOD Duct is a relative humidity transmitter with temperature output installed in air ventilation duct. Illuminated display ensures easy readability also from a distance. The RHT-MOD has a screwless lid and an easily adjustable mounting flange that make the installation of the device easy.

RHT-MOD Duct series devices include:
• Separate output for each measurement parameter (rH and T)
• Mounting flange
• Clear backlit display

Technical details

Communication: RS-485 Modbus (RTU)
Accuracy: 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: NTC10k 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
Output signal 1: 0/2…5/10 V (linear to rH), L min 1 kΩ
Output signal 2: 0/2…5/10 V (linear to T), L min 1 kΩ
Operating temperature: 0...+50 °C
Protection standard: IP54

RHT-MOD Duct

Example
RHT-MOD Duct-D

Model

Product series

RHT
Relative humidity transmitter, analog outputs
RHT-MOD
Relative humidity transmitter, Modbus communication
RHT-MOD

Mounting

Duct
Duct mount
Duct

Display

-D
With display
Without display
-D