Hello,

to calculate the absolute moisture of the air from measured values of the temperature and the relative moisture of the air it must be possible to calculate with non-linear functions. But the LOGO! has no function units to do that directly. But if we use the Tool
"PolynomRegressionDynamisch_LOGO_V2.xls"
we can define a polynom (here with order of 5) to aproximate the given table datas... look at the attachment - it is olso possible to calculate the dewpoint for the measured air data. (Documents in german language, but you find a lot of information about air moisture and dewpoint over the internet.)

Link to the German contribution (look my answers):
/tf/WW/de/Posts/62291#top

Best regards
Betel