26 ms·
Sounds like the meter was broken or at least wasn't properly calibrated. CO2 level should drop off quickly with a window open.
by rale00 4y ago
Sounds like the meter was broken or at least wasn't properly calibrated. CO2 level should drop off quickly with a window open.
- lstodd 4y agoYeah, this. 1000ppm is very noticeable, true 2000 is unbearable. Living in a center of a city next to a 10-line highway opening a window drops a properly calibrated sensor into 400s inside a few minutes.
- _Microft 4y agoShe brought the meter outside where it measured 480ppm.
- AlexandrB 4y agoI think so too. Use to work with a lot of CO2 sensors in a previous job and it's very difficult to keep an elevated CO2 level going if there's any exchange of air with the outside.