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RHT-MOD Humidity Transmitters For Building Automation Systems That Use Modbus Serial Communication Protocol

RHT-MOD Humidity Transmitters For Building Automation Systems That Use Modbus Serial Communication Protocol

Product Details:

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Product Description

RHT-MOD 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 conguration of the device quick and easy. Configuration is also possible via Modbus network.

RHT-MOD devices include:

  • Separate eld congurable Modbus output for each measurement parameter (rH and T)
  • One analog output for selected measurement: voltage (0/210 V) and current (420 mA)
  • Optional relay output

General Specification

Communication:

RS-485 Modbus (RTU)

Accurary:

Temperature: <0.5 C
Relative humidity: 23 % rH at 050 C and 1090 % rH
Total error band includes accuracy, hysteresis and temperature effect over 550 C and 1090 % 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:

0/210 V (linear to rH), L min 1 k or
420 mA (linear to rH), L max 500

Output signal 2:

0/210 V (linear to Temp), L min 1 k or
420 mA (linear to Temp), L max 500

Optional relay output:

Potential free SPDT 250 VAC, 6 A / 30 VDC, 6 A with adjustable switching point and hysteresis

Operating temperature:

0+50 C

Protection standard:

IP20

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