Aranet4 Incorrect Temperature
robboyle
Posted: 09.07.2021 04:16
Modified: 18.01.2025 06:07
Just unboxed my Aranet4 and the temperture is clearly incorrect. It's reading 83F which is way too hot - my smart thermostat reports 73 which I believe to be correct.
Is there a way to calibrate the temperature, or do I have a faulty unit?
aranet-techsupport
Posted: 15.07.2021 13:42
Modified: 03.12.2021 11:35
Dear robboyle,
Your question is forwarded to Aranet support team. You will be contacted.
rhinochaser
Posted: 02.12.2021 23:02
I'm having the same issue. Showing a good 20 degree F hotter than actual temp outside. I also had an issue with CO2 calibration. New out of the box it would not read much lower than 500 ppm outside. I did manual calibration, which I guess resets outside air to 420 ppm, but what if actual outdoor ppm is 450 ppm based upon that third-party link to current outdoor air CO2 levels?
Do I actually not really care what the actual outdoor air CO2 baseline is, since what I should care about is increase from baseline, since most metrics for actions are framed assuming outdoor air or 400 or 420 ppm?
aranet-techsupport
Posted: 03.12.2021 11:35
Modified: 03.12.2021 11:35
Hi rhinochaser,
Aranet4 sensors are factory calibrated against 0 ppm CO2. When calibrating the device manually against outdoor air, it is assumed that the normal CO2 level is 420 ppm. To be sure about Aranet4 measurements you can compare its CO2 outdoor measurement after calibration with the third-party services data, f.e. mentioned in this topic: https://forum.aranet.com/all-about-aranet4/how-can-i-calibrate-my-aranet4/
robboyle
Posted: 31.07.2021 23:34
For future reference, I ended up just having to wait - over a period of a couple days, the temperature reading slowing came down until it was in line with my other thermometers.
ronnie
Posted: 02.12.2024 20:55
Hello,
I have the Aranet 4 Pro and temperature is constantly overestimating by approx 5-6°C. At this point, I'm not even sure the humidity works either as outside on cloudy, humidity and rainy conditions it gives a 38% reading. I hope at least the CO2 is correct, otherwise this device goes back to where it came from.
Can you please advise?
aranet-techsupport
Posted: 03.12.2024 17:29
Hi!
How long have you had the device for? And can you send the Serial number of the Aranet4 to support@aranet.com or just in an answer here.
bimbam
Posted: 05.12.2024 00:54
>> When calibrating the device manually against outdoor air, it is assumed that the normal CO2 level is 420 ppm.
You can adjust this now to 424 or even 425 ppm.
Trends in CO2 - NOAA Global Monitoring Laboratory
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