RHT Duct

Humidity transmitters with temperature output for duct

RHT 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 has a screwless lid and an easily adjustable mounting flange that make the installation of the device easy.

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

RHT Duct series device options offer:
• Clear backlit display
• Modbus RTU interface

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Applications

RHT Duct is commonly used to monitor and control:

• Relative humidity and temperature levels of incoming and return air in ventilation system

Specifications

Performance

Measurement ranges:
Temperature: 32–122 ºF
Relative humidity: 0–90 %
Accuracy:
Temperature: <0.9 ºF
Relative humidity: ±4 % max @32–122 ºF and 10–90 % rH.
Total error band includes accuracy, hysteresis and temperature effect over 41–122 ºF and
10–90% rH.

Technical Specifications

Media compatibility:
Dry air or non-aggressive gases
Measuring units:
°F and % rH
Measuring element:
Temperature: NTC10K
Relative humidity: Thermoset polymer capacitive sensing element
Environment:
Operating temperature: 32–122 ºF
Storage temperature: -4–158 ºF
Humidity: 0 to 95 % rH, non condensing

Physical

Dimensions:
Case: 4.69” x 3.94” x 1.76” (119 x 100 x 44.7 mm)
Probe: L=7.4” (188 mm), d=0.47” (12 mm)
Weight:
5.3 oz (150 g)
Materials:
Case: ABS
Cover: PC
Probe: ABS
Mounting flange: LLPDP
Protection standard:
IP54 / NEMA3
Electrical connections:
4 spring loaded terminals
(24 V, GND, rH, T)
12–24 AWG (0.2–1.5 mm2)

Electrical

Supply voltage: 24 VAC or VDC ±10 %
Current consumption: max 90 mA (at 24 V) + 10 mA for each voltage output
Output signals for every media:
0/2…5/10 VDC, Load R minimum 1 kΩ

Conformance

Meets requirements for CE marking:
EMC Directive: 2014/30/EU
RoHS Directive: 2011/65/EU
WEEE Directive: 2012/19/EU

 

Model summary

  RHT Duct  
Description Model# Part#
Relative humidity transmitter for duct RHT Duct 10018
– with display RHT Duct-D 10019
– with Modbus configuration and display RHT-MOD Duct-D 10191