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I have two different air quality monitors now (QingPing for home, Aranet for the road) and the CO2 readings tend to diverge, sometimes a lot. Why… is this, as in technical details? @astrokatie.com @kateviolette.com this seems like the kind of thing you might know
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Maybe you've already done this, but I know for the Aranet, it can use recalibration every once in a while (like on the order of 6-12 months if I recall correctly from the manual). I'm less familiar with the QingPing but I wouldn't be surprised if it also could use recalibration sometimes.
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oh, interesting! it’s definitely been longer than that. maybe I should manually calibrate them both at the same time and see if they change
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I'm honestly due for recalibrating my Aranet too, I suspect
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I'm not super up on the technical details of why they need recalibration, other than that measuring molecules in gas form is a subtle exercise in general. (e.g. I have a cool breath monitor for gut issues, and the app will yell at you if you're blowing too fast or slow bc it can bork measurement)
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I was just reading the directions to take a new-to-me brand of COVID test and was struck by how many steps had “if you bork this, you’re more likely to get a false negative” disclaimer on them.