OMEGA

RHCM-40-PL-W Optical Chilled Mirror Dew Point Transmitter

Optical chilled mirror dew point transmitter

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RHCM 40 PL W Optical Chilled Mirror Dew Point Transmitter 13033

The RHCM-40 Series dew point transmitter is an optical chilled mirror high performance hygrometer designed to continuously measure the moisture content in gases. The sensor provides accurate long term repeatability and high reliability performance for process control and energy management. The instrument is powered by 24 Vdc or optional AC universal supply 85 to 230 Vac. The RHCM-40 series uses the chilled mirror dew point temperature condensation principle to determine the water vapor concentration in gas mixtures, and a platinum resistance RTD to accurately measure that temperature. Options include air temperature and humidity measurement. There are two selectable analog outputs which include 4 to 20 mA, 0 to 5 Vdc, or 0 to 10 Vdc and an RS232 serial port as well as electrically isolated relay contacts.

• Wall, Duct and Pipe Mount Models
• Remote Type Models
• 4-Wire RTD Measurement for Dew Point
• ±0.2°C Accuracy for Both Dew Point and Temperature
Response1°C/second not including settling time
Repeatabiltiy±0.05°C
HysteresisNegligible
Accuracy± 0.2°C for both dew point and temperature
RH ( Optional)1 to 95%
Air Temperature (Optional)-40 to 60°C (-40 to 140°F)
Dew Point (Standard)-40 to 60°C (-40 to 140°F)
Range
Electronics Module Outside Dimensions130 H x 130 W x 76 mm D (5.1 x 5.1 x 3")
weight1.4 kg (3 lb)
Power Supply24 Vdc ±20%, 1 A maximum
OptionalGold or platinum
StandardChrome plated
Mirror
For Dew Point2 stages of cooling (TEC) with a depression of 60°C
Air Temperature (Optional)3 m (10') standard, 15.2 m (50') maximum
Dew point3 m (10') standard, 15.2 m (50') maximum
Remote Cable Configuration
Contact RatingNormally open (NO) 3 A at 25 Vac, or 30 Vdc
K2Servolock/Alarm 2
K1Clean mirror/Alarm 1
Relay Outputs2 programmable alarm relays
0 to 5/10 Vdc1 kΩ or higher
4 to 20 mA0 to 250 Ω
Load
Analog Outputs2 analog ouputs (4 to 20 mA/0 to 5 Vdc to 0 to 10 Vdc selectable)
Pressure100 psig maximum (higher pressure available on special order)
Flow RateStatic to 3000 linear feet/minute

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