Dwyer

CDD Duct Mount Carbon Dioxide Transmitter

NDIR sensing technology with a 2000 ppm range monitors the occupancy in a room by detecting concentrated carbon dioxide

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CDD Duct Mount Carbon Dioxide Transmitter 05224

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.

Range0 ppm - 2000 ppm
Non-Linearity< 1% of FS
Pressure Dependence0.13% of reading per mmHg
Response Time3 min typical for 90% step change
Duct Air Velocity Range0 FPM - 1500 FPM (7.63 m/s)
Ambient Operating Temperature32°F - 122°F (0°C - 50°C)
Storage Temperature-4°F - 158°F (-20°C - 70°C)
Power Requirements18 VAC - 30 VAC RMS 50/60 Hz or 18 VDC - 42 VDC
Outputs0 VDC - 10 VDC
HousingFlammability Classification UL rated 94V-5VA
Weight8 oz (230 g)
Accuracy± 40 ppm + 3% of reading @ 22°C
Temperature Dependence0.2% FS per °C
Stability< 2% of FS over life of sensor

• On demand room ventilation

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