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RHT-DM Duct Mounted Humidity and Temperature Transmitter

Overview

The RHT-DM duct mounted temperature and humidity transmitters incorporate the best high accuracy and great stability relative humidity and temperature sensors. The RHT-DM convert the measured values into linear 4 to 20 mA signals or optionally 0 to 10 Vdc output. The microprocessor based circuit enables full configuration of output range when used with the optional TxConfig PC interface and the Windows® based software. The humidity signal can be configured to either relative humidity or dew point output.

Features

Microprocessor Based Temperature and Humidity Transmitter
Field Configurable with Optional TxConfig PC interface and the Windows® based software
Two Probe Lenghts Available 150mm or 250mm
Two-wire loop powered 4 to 20mA, 20 to 4mA or Voltage output 0 to 10Vdc
Isolated 4 to 20mA outputs, Non-isolated 0 to 10Vdc outputs
Humidity Accuracy Between 20% and 80% humidity 3% at 25°C
Temperature Accuracy Between -40°C and 80°C ±2.2°C at 25°C
Power 12Vdc to 30Vdc (4 to 20mA model) or 18 to 30Vdc (0 to 10Vdc model)
Electronic circuit case IP65; Sensors capsule IP40
Internal protection against reversed voltage wire polarity
Operational Limits Electronic Module -10 to +65°C, 0 to 95%RH

Price Starting At:
$238.00

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Data Sheet User Manual

RHT-DM Humidity Measurement Specifications

Measuring Range	programmable anywhere from 0 to 100%RH or from -100 and 103°C for dew point
Output Resolution	0.022mA (4 to 20mA) or 0.015V (0 to 10V)
Accuracy	Between 20% and 80% humidity 3% at 25°C
Repeatability	±1%RH
Histeresis	±1%RH
Non-linearity	<1%RH
Stability	<1%RH per year
Response Time	4 seconds in fairly still air

RHT-DM Temperature Measurement Specifications

Measuring Range	programmable between -40 and 120°C Recommended Temperature range -20 to 100°C
Accuracy	Between -40°C and 80°C ±2.2°C at 25°C
Output Resolution	0.006mA (4 to 20mA) or 0.003V (0 to 10V)
Repeatability	±0.1°C
Humidity Response Time	4 seconds in fairly still air

RHT-DM General Specifications

Power Supply	12Vdc to 30Vdc (4 to 20mA model) 18 to 30 Vdc/15mA. (0 to 10V model)
Electronic Circuit	-10 to +65°C, 0 to 95% RH
Outputs	4 to 20mA or 20 to 4mA current, 2-wire loop power supply 0 to 10Vdc/2mA max. (0 to 10V model)
Output Load	4 to 20mA output(Ohms max.) = (Vdc - 12)/0.02 let Vdc = Loop power supply (12 to 30 Vdc) 0 to 10 Vdc output: 2mA max.
OUT1 Output Resolution	0.006 mA (4 to 20mA) or 0.003V (0 to 10V)
OUT2 Output Resolution	0.022mA (4 to 20mA) or 0.015V (0 to 10V)
Channel Isolation	4 to 20mA outputs are isolated from each other 0 to 10V outputs share a common ground
Reverse Polarity Protection	Yes
Protection	Electronic circuit case: IP65 Sensors capsule: IP40
Cable Gland	Compress fitting PG7
Case Dimension	70mm W x 39mm H 35mm D
Sensor Dimensions	150mm or 250mm