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Dwyer CDD Duct Mount Carbon Dioxide Transmitter

  • Brand Dwyer
  • Part # CDD
  • Condition
    Brand New

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The Model CDD Duct Mount Carbon Dioxide Transmitter monitors the occupancy in a room by detecting the concentration of carbon dioxide in the return air duct. The non-dispersive infrared sensing technology automatically updates the calibration of the transmitter using a proprietary logic feature which limits the amount of error due to drift. The Model CDD can measure up to 2000 PPM in duct air flows less than 1500 FPM.

Product Applications
  • On demand room ventilation.
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Technical Details

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Range0 to 2000 PPM.
Accuracy±40 PPM + 3% of reading @ 22 °C.
Temperature Dependence0.2% FS per °C.
Stability< 2% of FS over life of sensor.
Non-Linearity< 1% of FS.
Pressure Dependence0.13% of reading per mm of Hg.
Response Time3 minutes typical for 90% step change.
Duct Air Velocity Range0 to 1500 FPM (7.63 m/s).
Ambient Operating Temperature32 to 122 °F (0 to 50 °C).
Storage Temperature-4 to 158 °F (-20 to 70 °C).
Power Requirements18 to 30 VAC RMS 50/60 Hz or 18 to 42 VDC.
Outputs0 to 10 VDC.
Housing Flammability Classification UL rated 94V-5VA.
Product Details
Range0 to 2000 PPM.
Accuracy±40 PPM + 3% of reading @ 22 °C.
Temperature Dependence0.2% FS per °C.
Stability< 2% of FS over life of sensor.
Non-Linearity< 1% of FS.
Pressure Dependence0.13% of reading per mm of Hg.
Response Time3 minutes typical for 90% step change.
Duct Air Velocity Range0 to 1500 FPM (7.63 m/s).
Ambient Operating Temperature32 to 122 °F (0 to 50 °C).
Storage Temperature-4 to 158 °F (-20 to 70 °C).
Power Requirements18 to 30 VAC RMS 50/60 Hz or 18 to 42 VDC.
Outputs0 to 10 VDC.
Housing Flammability Classification UL rated 94V-5VA.
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Mega Depot
(800) 884-5767
+1 (332) 900-3727 (Intl.)