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 (0-10V, 2-10V) and current (4-20mA).
• Optional relay output, and Modbus communication.

Suitable media:
Air and non-aggressive gases

Measuring element:
Pt1000 temperature sensor, thermoset polymer capacitive sensing element for humidity

Accuracy:
±4 % max @0…50 °C and 0…90 % for humidity

Electrical interface:
Supply voltage: 24 VAC or VDC ± 10%
Current consumption: 150 mA (avg)

Output signals for all parameters:
0/2-10 VDC, Load R minimum 1 kohm or
4-20 mA, maximum load 500 ohm

Materials:
Housing: ABS

Connections:
Electrical connections: 5+3 screw terminals, max 1.5 mm2, option for relay

Weight: 150 g
Dimensions: 99 x 90 x 31 mm

General ambient condition:
Temperature range:
• Operation 0…+50°C
• Storage: -20…+70°C
Ambient humidity: 0 to 95% rH

Safety:
Protection standard: IP20