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$\begingroup$ I can confirm the relative humidity for the temperatures you specified should be around 75%. My spreadsheet gives a value of 70%. Do the sensors need to be calibrated prior to using them? $\endgroup$
–Fred
Jun 9, 2021 at 9:51
1

$\begingroup$ @Fred thanks for the response - the SHT30 claims to be calibrated "out of the box" so I dont' understand what's going wrong. I find it hard to believe that it's 30% out or that there is just a fixed amount that I have to adjust it by. Thanks for confirming the RH I should expect. $\endgroup$
–Hayden Eastwood
Jun 9, 2021 at 14:57
$\begingroup$ these may be of interest but may not be directly helpful here:How do the pros measure humidity?andHow is relative humidity determined from a wet and dry bulb readings?andHow does a whirling hygrometer work, how does it differ from static dry/wet bulb thermometer, and how to obtain humidity from its readings?andHow is the specific heat of a wet bulb determined? $\endgroup$
–uhoh
Jun 10, 2021 at 8:50
$\begingroup$ andHow would I use data to find specific humidity and mixing ratio? $\endgroup$
–uhoh
Jun 10, 2021 at 8:51

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