CO2 readings below 370 ppm
Posted: 18.05.2022 11:42
i have a new Arabet4, receuved 2 days ago
I performed a manual calibration yesterday.
But I notice today the CO2 levels when I’m outside can get as low as 362 (see pic)
What’s wrong ?
Posted: 18.05.2022 11:48
Unfortunately, the picture was not attached.
You can compare your Arane4 CO2 measurements with third-party services providing information about CO2 level outside. F.e. https://earth.nullschool.net/#current/chem/surface/level/overlay=co2sc/orthographic=29.16,51.27,791/loc=24.215,57.021
Click with the mouse pointer to your location on the map, and you will see current CO2 level outdoors.
Please contact firstname.lastname@example.org if your sensor measurements after manual calibration differ significantly from the data of this service.
Posted: 18.05.2022 12:30
I can't upload the pic ('forum server incorrect reply')
Here is a link to the pic in my cloud:
PLease note that right after calibration, the reading is correct (416 ppm)
It is only afterwards that there is a drift.
I observe the same phenomenon with another CO2 measurment device based on the same technology. (NDIR)
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