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    BME680 - accuracy of measurements when calibration level is 1

    piotr_s
    Member

    BME680 - accuracy of measurements when calibration level is 1

    We are using BME680 sensor in our data loggers. I noticed, that it has to recalibrate quite often. The device lays in one place, in a typical room and there are no extreme VOC changes. The chart below shows IAQ index measured by the sensor. Parts of the chart mared with red are the moments when the sensor was re-calibrating. Questions:

    • Is the data during the calibration process reliable - can we show this data to the end users as valid measurements?
    • Is this behaviour of the sensor normal? As you can see on the chart below, it had to re-calibrate twice during few days

     

    Screenshot 2021-09-03 at 14.21.09.png

    Tags (2)
    8 REPLIES 8
    BSTRobin
    Community Moderator

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

    Hello piotr_s,

    Is the corresponding IAQ accuracy of the data in the red part(Not calibrated) 0?

    piotr_s
    Member

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

    Hi,

    on the chart:

    • red = 1
    • gray = 2
    • blue = 3

    If the snesor returns "0", we do not present it on the chart at all. So the main uestion is, if the users can trust the data in red (1) and treat it as realible readings.

     

    piotr_s
    Member

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

    @BSTRobin, do you have any updates on this? Can we treat the data with calibraiton level 1 as reliable?

    piotr_s
    Member

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

    Hi Robin,

    could you please confirm that we can trust the data with calibraiton levles 1,2 and 3?

     

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