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The carbon dioxide gas sensor measures gaseous carbon dioxide levels by detecting the quantity of IR radiation absorbed by carbon dioxide molecules. The sensor employs a hot metal filament that acts as an IR source to generate IR radiation. The IR source is located at one end of a sensor tube, and another end is provided with an IR sensor.
2 CO2/T/.. Series Sensors Data Sheet TA201169 Issue 4, 27-Sep-2012 CO2/T/.. Data Sheet FUNCTIONALITY The CO2/T.. series carbon dioxide and temperature sensors can be used for a wide range of HVAC applications, operating over a 0 to 2000 ppm concentration CO 2 range. The CO 2 sensor offers an accuracy of Â±50 ppm +2% of measured value.