What would be the first thing to do if Aranet4 device shows CO2 levels well above 500 ppm in fresh air outdoor environment?

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  aranet-techsupport

  Posted: 28.01.2021 01:53

  Modified: 20.11.2024 17:16

  Please try recalibrating the device as shown in the video: https://www.youtube.com/watch?v=CD8E6WzpvjM except put the sensor in a full outdoor environment during the calibration process for 15 minutes without any person in close proximity. 

  
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  zeolite

  Posted: 21.02.2021 04:19

  Is it ok to attempt a calibration outdoors when the temperature is in the 0 C to 10 C range? 

  I see in the User manual that it says operation < 10 C may result in a shift of sensor reading with slow recovery time.

   
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  aranet-techsupport

  Posted: 21.02.2021 11:26

  As the Aranet4 device has reduced measurement accuracy in the temperature range 0...+10 °C, then it is recommended to calibrate it in the temperature range +15 … +35 °C.
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  zeolite

  Posted: 21.02.2021 16:30

  Ok that is very good to know becuase for 7 months of the year our outdoor temperatures are < 15 C so calibrating outdoors will not be possible.   We will look for a temperature-controlled indoor facility with a large fresh air draw and no humans about.  
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  aranet-techsupport

  Posted: 21.02.2021 19:36

  If possible then the most accurate calibration will be performed if the Aranet4 device can be placed in a closed environment filled with 420 ppm CO2 concentration level reference gas during the calibration process.  

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