Dew point virtual sensor

• 

  aranet-techsupport

  Posted: 24.08.2023 12:47

  Modified: 27.10.2025 00:23

  In Aranet Cloud you can setup a Dew point sensor which you can find under virtual sensors.
  
  When selecting it you will be presented with this screen, where you can select the necessary sensors.:
  
  
  
  The sensor itslef works on the following principles:

  

  Ts Dew point (celsius degrees)

  T Temperature (Celsius)

  RH - Relative humidity of the air (in percent)

  a = 17.625

  b=243.04

  

   
• 

  ernests

  Posted: 04.10.2023 14:45

  Dew point is calculated according Magnus-Tetens formula that allows  to obtain accurate results (with an uncertainty of 0.35 °C) for temperatures ranging from -45 °C to 60 °C.

  Refference for constants a and b: https://doi.org/10.1175/1520-0450(1996)035<0601:IMFAOS>2.0.CO;2

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