Hi, I am using purple air Flex with VOC sensors but I am not sure what it is really sensing. The numbers recorded on the SD are either 0 or 50.
Could you please let me know if something is wrong with the sensors ?
Thank you
Regards,
Hi I am new to PA too - the VOC sensor data is just a number proportional to total VOCs (tVOC).. It is influenced by temp/humidity as well and there is a south coast AQMD test report on the sensor. PA states it is experimental as I guess they are still thinking about how to use it.. There are many VOCs that could influence this number.. it is interesting just to watch .. VOCs can also be influenced by traffic.. I haven’t noticed my numbers following PM2.5 tho.. good luck!
It seems the VOC sensors of 2 out of my 3 purple airs are causing problems with no continuous signals. The third one seems to work fine. Is it possible to buy the BME688 set up for purple air somewhere ?