The measurement of CO2 is made with an infrared technology of NDIR type.
This optical technology can present a drift of the measurement in time that the Carbon product compensates automatically by using an ABS method (Automatic Baseline Correction).
This method is particularly effective and reliable in an environment where the CO2 level reaches at least a minimum of 400ppm for a few consecutive hours: at night and on weekends for collective spaces, during the day in a room.
This calibration process is performed automatically by the device every 8 days.
No maintenance is necessary. The reliability of the CO2 measurements is ensured throughout the life of the product.
You can also perform a manual calibration of the CO2 sensor:
- Place your Carbon product near an open window for at least 2 minutes
- Press the central button of the product 6 times quickly
The green LED lights up during the whole calibration process (for about 8 seconds).
Once the LED is off, the manual recalibration is complete.