Bme688 H2S detection

[ilcnet]

Hello
The BME688 sensor can detect H2S gas normally without calibration? Because the H2S is so dangerous and we cant use the AI software to learning the BME688 sensor to detect it.thanks

[BSTRobin · Accepted solution]

Hi ilcnet,

To detect H2S, you should following BME688 application note and record H2S, import & label data, train and evaluate the algorithm, etc. with BME AI Studio.
H2S is a dangerous gas. As long as there is no open fire and high heat energy in the test environment, it will not cause combustion and explosion.

[ilcnet · Accepted solution]

Thanks for your response, of course but the H2S is dangerous to inhale even for a few seconds, and to catch algorithm with BME AI Studio we need 30 minutes to sensor learning.can we use another safe gas to catch nearest algorithm or that's not true?

[BSTRobin · Accepted solution]

Hi ilcnet,

Usually, the detected gas should be placed in a closed environment when you record gas data.

[ilcnet]

Thanks for your response, i have 4 bme688 sensor that I burned 3 of them in outdoor clear air that they work very well now and a few seconds after turning on i received true air quality value, but one of them i burned in the home and this one air quality value isn't true for many minutes for example 20,30 min, and after a few minutes it's give me a value near to true for example 3 sensors give me IAQ between 10-20 and this one give me 30-40
My question is how i can reburn or calibration again to solve this problem.thanks