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    BME680 - accuracy of measurements when calibration level is 1

    Fredrik_T
    Occasional Visitor

    Re: BME680 - accuracy of measurements when calibration level is 1

    @BSTRobin 

    HI Robin (or whoever can answer this question), 

    We need your support to sort out this and other questions that we have regarding the BSEC/BME680 logic to be able to continue the global projects on building climate control. Piotr and his team are delivering the HW, that uses your sensors, to us. 

    Thank you. 

    Kind Regards 

    Fredrik 

    BSTRobin
    Community Moderator

    Re: BME680 - accuracy of measurements when calibration level is 1

    Hello piotr_s, Fredrik_T,

    Sorry for the delay reply.
    You could trust the data when IAQ accuracy was 3.

    Accuracy.png

    piotr_s
    Member

    Re: BME680 - accuracy of measurements when calibration level is 1

    Hi Robin,

    in some cases it takes more than 30 minutes to calibrate. Please check the attached chart (periods in red - calibration level 1, gray - 2, blue - 3). The data make sense, even if the calibration level is 1 or 2.

    How should we reat calibration levels 1 and 2? Are these compleatly unreliable or is the accuracy level different, but the datra can still be used?

    BSTRobin
    Community Moderator

    Re: BME680 - accuracy of measurements when calibration level is 1

    Hello piotr_s, Fredrik_T,

    Automatic background calibration ensures that users experience consistent IAQ performance.
    IAQ values with status 1 or 2 are not as accurate as those with status 3, IAQ values with calibration status 3 are recommended.

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