BME 688 burn in process

[fritz]

Hello,

According to the recommendations the BME 688 sensor should be stabilized by running for at least for 24 hours.

For this purpose I'm using HP-354 profile with RDC-1-0 continous readings.

After appr. 30 hours the gas resistance readings seemed to be stable (see attached plot), but rises again later.

How could one explain such a behaviour?

Still needed more time to stabilize ?

[fritz]

... performing burn-in process for additional hours (60h) doesn't really helps, RAW gas resistance readings

are still oscillating significantly.

[BSTRobin · Accepted solution]

Hi fritz,

Take LP mode as an example:
The IAQ value obtained within 8 hours is not credible, and it can be obtained after more than 8 hours。
After 7 days, based on similar baseline, the output value of different sensor in the same environment should be within the scope of the specification, ± 15+± 15%.