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This program calculates the concentration of water vapour using the wet and dry bulb method. All calculations according to ITS-90 standards. A small help file is included in the program . All you need is a temperature sensor, a wet white cotton thing to cover your temp sensor and a barometer. The program asks for atmospherical pressure in hPa, thats the same as mBar, the static pressure will almost always be 0 Pa (except when measuring in a duct with a different pressure then atmospheric).

Wet bulb cannot be higher then 100 degrees C or the dry bulb temperature

Water vapour concentration is given in relative and absolute percentages and in grams per normal cubic metre.

Wiki Info
Used literature ITS-90 (pdf)

(btw only water vapour over water is considred in this program, water vapour over ice is not included)



  • Air Moisture Calculator
This download was added Fri Sep 21, 2012 10:55 pm by Menno  • Last download Thu Mar 14, 2024 10:47 pm


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