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    bme688 carbon monoxide mentioned in datasheet but CO2 in the software

    bme688 carbon monoxide mentioned in datasheet but CO2 in the software

    akash_reby
    New Poster

    In the datasheet of the BME688 it is mentioned that the sensor can be used to measure carbon monoxide but in the library of BSEC the output is carbon monixide. Is the sensor measuring carbon dioxide or monixide ?

    11 REPLIES 11

    BSTRobin
    Community Moderator
    Community Moderator

    Hi akash_reby,

    You could see more detailed introduction from here: https://www.bosch-sensortec.com/products/environmental-sensors/gas-sensors/bme688/

    The gas sensor can detect Volatile Organic Compounds (VOCs), volatile sulfur compounds (VSCs) and other gases such as carbon monoxide and hydrogen in the part per billion (ppb) range.

    Additionally to all features of the BME680, the BME688 has a gas scanner function. In standard configuration, the presence of VSCs is being detected as indicator for e.g. bacteria growth. And the gas scanner can be customized with respect to sensitivity, selectivity, data rate and power consumption as well. The BME AI-Studio tool enables customers to train the BME688 gas scanner on their specific application, like in home appliances, IoT products or Smart Home.

    How is the Air Quality Index determined ? What is the formula ?

    BSTRobin
    Community Moderator
    Community Moderator

    Hi akash_reby,

    BSEC library output IAQ, but the implement of this algorithm was not official open.

    Thanks for the reply.

    Do we know if the IAQ is Index of Air Quality or Indoor Air Quality Index?

    BSTRobin
    Community Moderator
    Community Moderator

    Hi akash_reby,

    It is IAQ is Index of Air Quality, you could refer it from BME688 data sheet according to the guidelines issued by the german federal environemental agency.

    BME688 Table 6 IAQ.png

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