thstielow
commented
2 years ago Hello Sergei,
unfortunately, I can not give you such a table immediately. I have been running the sensor mostly in an office environment and finding the exact value where ventilation is needed is quite tricky. However, defining such a table should be possible, as long as the sensor is allowed to burn-in in fresh air and is not running continiously in a dirty environment. Typically, values down to 95% represent good air quality and I would estimate, that you can set the cut-off at 90%. Below, ventilation is recommended. Currently, I do not have measurements for polluted environments but I may get the opportunity to record some values inside an engine research facility next week. If you have the time I could try and provide an estimate for different degrees of pollution. Otherwise I would recommend you to do some trials in controlled environments to tailor the boundaries to your specific field of application.
Best, Thomas
sergey-lukin
Hello Thstielow!
We use esp32 with the Bosch bme680 sensors in our project. Thank you very much for sharing your Python script, providing a nice way to calculate IAQ value. It works just fine. No issues with that. Now, my boss is asking me if I can make him a chart like: 90-100% good air quality 70-80% ventilation is needed 60-70% move out Under 60% poison Or something similar He explained that we need to provide a manual for people using our devices. The manual should contain some description of the IAQ value displayed on the screen of our devices.
I realize that there might be an issue with this kind of chart because the value is not absolute but relative to what was measured before. Maybe you have already thought about that before and have some idea. I will be thankful if you share your opinion about that.
Sergei Lukin