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I have a datalogger that records temperature and relative humidity in a room. Can I use that to calculate vapor pressure?

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  • $\begingroup$ How would uncontained vapor pressure be different from atmospheric pressure? $\endgroup$
    – Adrian Howard
    Nov 6, 2020 at 5:04
  • $\begingroup$ Vapor pressure is a function of temperature only. Google "Antoine Equation". $\endgroup$
    – David White
    May 12 at 21:37

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Best I can suggest is a psychrometric chart with p = RT/v, v = specific volume. R = 0.286 kJ/kg/K and is NOT the familiar universal constant R = 8.31 J/mole/K.

enter link description here Psychrometric chart for air

enter link description here Using a psychrometric chart

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