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    What does the IAQ accuracy mean in BSEC?

    Accepted Solution
    Community Moderator

    BSEC outputs an 'IAQ accuracy' together with the IAQ output, but what do values from 0 to 3 mean?

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    Accepted Solutions (1)

    Accepted Solutions (1)

    Community Moderator
    Solution

    The IAQ accuracy is reflects the current state of the background calibration process, such as:

    • IAQ Accuracy=0 could either mean:
      • BSEC was just started, and the sensor is stabilizing (this lasts normally 5min in LP mode or 20min in ULP mode),
      • there was a timing violation (i.e. BSEC was called too early or too late), which should be indicated by a warning/error flag by BSEC,
    • IAQ Accuracy=1 means the background history of BSEC is uncertain. This typically means the gas sensor data was too stable for BSEC to clearly define its references,
    • IAQ Accuracy=2 means BSEC found a new calibration data and is currently calibrating,
    • IAQ Accuracy=3 means BSEC calibrated successfully.

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