Can I use this in a sauna

• 

  nobody

  Posted: 25.01.2024 21:04

  Modified: 03.03.2026 10:40

  Want to measure the CO2 level in sauna.  Sauna room temp is about 180F.  Read that the optimal operating range for the Aranet4 is up to 120F and warning that too low of temp can damage sensors, but no warning on too high of temp.  Will it work in 180F for a few minutes?
• 

  aranet-techsupport

  Posted: 26.01.2024 06:08

  Hi!
  
  Make sure the sauna is a dry sauna first as excessive moisture will damage the device too.
  The temperature in a sauna also quite high and might damage the components, I would not recommend using it in a sauna.
• 

  nobody

  Posted: 28.01.2024 23:40

  Its a dry sauna.  

  Not planning to leave it there for hours.  Was thinking about testing it for about 5 min

  Has Aranet ever tested it in high temp?  Notice the warning for low temps but nothing for high temps.  Never stress tested the device for high temps?
• 

  aranet-techsupport

  Posted: 29.01.2024 06:29

  The operating range for the CO2 sensor ir <50 °C or ~120 °F. The CO2 sensor might not operate correctly above the limit.
• 

  kyle090471

  Posted: 03.03.2026 10:19

  Hi, I also want to leave the sensors in sauna for a longer and a shorter periods, and I have two questions:

  1. If I place the CO₂ sensor at a lower position (around knee height), where the temperature is about 45°C, I assume it will work. If I leave it there for four weeks, could 45°C damage the CO₂ sensor?

  2. Similarly, if I test the CO₂ sensor for five minutes at a higher position where it is around 80°C, you mentioned it may not operate correctly above its limit. Could that permanently damage the CO₂ sensor?

  Thanks!
• 

  aranet-techsupport

  Posted: 03.03.2026 10:40

  Hi!
  
  1st, the humidity would probably damage the screen of the Aranet4 or Aranet2 sensors. Anything above 80% RH, especially condensing atmosphere will do this,
  The temperature up to 50 degrees °C is fine, however CO2 measurement accuracy is provided for a range 0–5000 ppm, temperature 15–35 °C so it might not be accurate at hose temperatures.

  The operating temperature range may vary based on the battery type used. Generally, the range for alkaline batteries is between -20–50 °C (-4–122 °F), whereas for lithium batteries, it is -40–60 °C So higher temperature might damage the batteries or the T/RH sensor. Even for a limited time.

   

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