RHT

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 devices include:
• 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

Comments are closed.

Applications

RHT 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

Specifications

Performance

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

Technical Specifications

Media compatibility:
Dry air or non-aggressive gases
Measuring units:
°F and % rH
Measuring element:
Temperature: Pt1000
Relative humidity: Thermoset polymer capacitive sensing element
Environment:
Operating temperature: 32–122 °F
Storage temperature: -4–158 °F
Humidity: 0 to 95 % rH, non condensing

Physical

Dimensions:
Case: 3.93” x 3.57” x 1.26” (99 x 90 x 32 mm)
Weight:
5.3 oz (150 g)
Mounting:
3 screw holes slotted, ø 11/64” (3.8 mm)
Materials:
Case: ABS
Protection standard:
IP20
Display (Optional)
Touchscreen
Size: 3.05” x 2.06” (77.4 x 52.4 mm)
Electrical connections:
Power supply:
5-screw terminal block
(24 V, GND, rH, T, NC)
12–24 AWG (0.2–1.5 mm2)
Relay out:
3-screw terminal block
(NC, COM, NO)
12–24 AWG (0.2–1.5 mm2)

Electrical

Input:
24 VAC or VDC, ±10 %
Current consumption: max 90 mA (at 24 V) + 10 mA for each voltage output or 20 mA for each current output
Temperature output signal:
0–10 V, R>1 kΩ
2–10V, R>1 kΩ
4–20 mA, R<500 Ω
Relative humidity output signal:
0–10 V, R>1 kΩ
2–10 V, R>1 kΩ
4–20 mA, R<500 Ω
Relay out:
SPDT Relay, 250 VAC / 30 VDC / 6 A

Conformance

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

 

Model summary

  RHT  
Description Model# Part#
Relative humidity transmitter for room RHT 10006
– with display RHT-D 10007
– with relay and display RHT-1R-D 10198
– with Modbus configuration and display RHT-MOD-D 10008
– with Modbus configuration, relay and display RHT-MOD-1R-D 10199