What is a TVOC sensor baseline?
Awair Element user s digital multi-pixel metal oxide gas sensor to measure TVOC concentration in your environment. To ensure sensor accuracy, upon setup the sensor establishes a baseline. The lowest reading is used as the baseline, and all TVOC readings are relative to this baseline.
How is a baseline calibrated on re-calibrated?
The sensor used in the Awair Element automatically recalibrates using a proprietary on-chip baseline compensation algorithm. A typical home or office usage will result in automatic recalibration without manual intervention.
In rare circumstances or when using the device in a new environment, a re-calibration is advised. There are two methods to recalibrate your TVOC sensor, the first is by exposing the sensor to "clean" outdoor air for 30 minutes. The expected result is that the sensor will output a reading of 20ppb whilst exposed to the outdoor air.
The second is by contacting the Awair Customer Support Team to issue a remote reset command to erase the saved baseline, forcing the sensor to begin a new baseline calibration. If using multiple devices, it is advised to have all devices in close proximity and a clean air environment for optimal re-calibration.