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 <<  |  <  |   AX-RH-T-CD - Combined RH, T and Co2 Transmitter
Analogue outputs
AX-RH-T-CD-V / Space Mounted RH, Temperature & CO2 Sensor 0-5 or 0-10Vdc o/p POA Qty
AX-RH-T-CD-C / Space Mounted RH, Temperature & CO2 Sensor 4-20mA o/p POA Qty
AX-RH-T-CD-V-LCD / Space Mounted RH, Temperature & CO2 Sensor 0-5 or 0-10Vdc o/p + LCD display POA Qty
AX-RH-T-CD-C-LCD / Space Mounted RH, Temperature & CO2 Sensor 4-20mA o/p + LCD display POA Qty
Modbus
AX-RH-T-CD-V-Mod / Space Mounted RH, Temperature & CO2 Sensor 0-5 or 0-10Vdc o/p POA Qty
AX-RH-T-CD-C-Mod / Space Mounted RH, Temperature & CO2 Sensor 4-20mA o/p POA Qty
AX-RH-T-CD-V-LCD-Mod / Space Mounted RH, Temperature & CO2 Sensor 0-5 or 0-10Vdc o/p + LCD display POA Qty
AX-RH-T-CD-C-LCD-Mod / Space Mounted RH, Temperature & CO2 Sensor 4-20mA o/p + LCD display POA Qty
Bacnet
AX-RH-T-CD-V-Bac / Space Mounted RH, Temperature & CO2 Sensor 0-5 or 0-10Vdc o/p POA Qty
AX-RH-T-CD-C-Bac / Space Mounted RH, Temperature & CO2 Sensor 4-20mA o/p POA Qty
AX-RH-T-CD-V-LCD-Bac / Space Mounted RH, Temperature & CO2 Sensor 0-5 or 0-10Vdc o/p + LCD display POA Qty
AX-RH-T-CD-C-LCD-Bac / Space Mounted RH, Temperature & CO2 Sensor 4-20mA o/p + LCD display POA Qty
 <<  |  <  | OVERVIEW | SPECIFICATION | DATASHEETS        

The RH-T-CD Combined Humidity, Temperature and Carbon Dioxide Transmitter uses NDIR single beam Infrared technology to monitor the CO2 levels a Thermistor to monitor the Temperature and a Thermoset Polymer Based Capacitive sensor for the RH and outputs a linear signal as either 4-20 mA or 0-5/10 Vdc. Operating parameters are easily programmed by an on-board keypad to configure the transmitter to a specific application. The optionsinclude a LCD display displaying the ppm levels and the option of Modbus or Bacnet output
Product Features
• Wall mounting
• Fully menu driven set-up/ calibration
• Monitors CO2 over range 0 to 2,000 ppm
• Solid State Sensing Element
• Optional Modbus or Bacnet output
• 5 year calibration interval
• Adjustable Analogue Output

Power Supply
20 to 30Vac/dc @80mA max
Consumption
125mA @ 24V max (typical 75mA)
Ambient Temp. Range
0 to +50’C , 0-95% RH non condensing
LCD Display
(optional) Displays all parameters 33 x 14 mm (optional at additioanl cost)
Housing
Flame retardant ABS
Dimensions
119 x 71 x 32 mm (Bacnet variant in a different housing)
Conformity
CE marked, EMC, LVD.
Country of Origin
Canada

Carbon Dioxide
Sensor Type
Non-dispersive Infra-red
Range
0-2000ppm standard, programmeable from 1500 upto 20,000ppm in 500ppm steps
Calibration Interval
5 years
Accuracy
+/- 50ppm or 3% whichever is greater
Stability
Self Calibrating <2% FS over life of sensor (typical 15yrs)
Altitude Correction
Programmable from 0-5,000ft in 500 ft increments
Output
0-5/10Vdc or 4-20mA (Modbus or Bacnet output available at additional cost)
Settling Time
<2 minutes after power up
Response Time
<2 minutes for 90% step change

Temperature
Sensor Type
10K3A1 Thermistor
Temperature Range
0-35 or 0-50’C - selectable
Temperature Accuracy
+/- 0.2’C
Output
0-5/10Vdc or 4-20mA (Modbus or Bacnet output available at additional cost)

Relative Humidity
Sensor Type
Thermoset Polymer Based Capacitive
RH Range
0-100%RH
RH Accuracy
+/- 2% RH
Output
0-5/10Vdc or 4-20mA (Modbus or Bacnet output available at additional cost)
RH Response Time
15 seconds typical
RH Stability
+/- 1%RH typical @50% RH in 5 years

AX-RH-T-CD.pdf / Combined RH, T and Co2 Transmitter