BME680 response to changes in oxygen concentration

[SensorGenie]

Hello everyone,

I wanted to know if the BME680 is sensitive to changes in oxygen concentration. For example, if the O2 concentration decreases from 21% to 18%, 15%, 10%, 5%, and finally 0.5%, will there be a change in the output of the sensor? Would the sensor need to be calibrated for O2 concentration? I am looking for data on this, but have not been able to find it. Thanks!

[BSTRobin]

Hi SensorGenie,

Thanks for your inquiry.
O2 is an reaction medium and does not belong to VOCs. BME680 does not support the detection of O2.

[SensorGenie]

Thank you for your comment. What you are talking about is exactly what I refer to. O2 is a reaciton medium. But if the O2 concentration drops, does this affect how the sensor detects VOCs? If so, in what way?

[BSTRobin]

Hi SensorGenie,

With less oxygen, the resistance value output by BME680 will decrease.

[SensorGenie]

Thanks for this! Do you have any links to data showing what this looks like? Would the sensor need to be calibrated for O2 concentration in order to function properly?