we have been using the CO2 sensor MH-Z16 NDIR for a while now and we are pretty pleased with its performance. However, we have detected that after measuring the CO2 ppm for some days (this period seems miscellaneous), it begins to send a wrong signal. You can see these failure readings in the file attached (after Nov 12 and the last days) in which all the readings from more than a month are represented. To amend this wrong signal, we have to reset the arduino, and after doing so, the reading becomes normal.
Do you have any idea why this is happening with our sensor? How can we correct it?
Thank you for your time, regards,