BME680 eCO2 accuracy

Hey,

We are developing a product and wanted to test multiple air quality sensors, this included the BME280. Overall there were 10 devices in various locations logging the sensor values every 6 seconds.

When looking at the data the BME680 eCO2 reading does not follow a similar trend to any of the other devices tested.

The BME680 was sampled using the BSEC library on Arduino with the sample rate set to BSEC_SAMPLE_RATE_LP with the code otherwise following the Arduino provided examples.

Are there any other steps to get accurate eCO2 or can anyone comment as to why we seem to see an inverse trend on the BME680's eCO2 compared to the other 3 sensors?

Thanks,

Liam

Best reply by BSTRobin

Hi liamm36,

Thanks for your feedback.
After our internal discussion, it look likes gas is in resistant saturation situation, please check below information,
1.Check the sensor heater if work or not, or use different heater temperature to check.
2.Use another BME680 sensor to check if have same phenomenon.

View original

9 replies

Resolved