Does anybody use a HR-33T in Psychrometric Mode? How can I determine the cooling time for different types of samples?

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Guido Bongi

To get a reference value you can use a pressure/volume curve obtained by porous plates and once done on a soil, you determine water content, the volume,, by a quick drying in a microwave owen on the sample for HR 33T after reading the plateau. Wescor psycrometer allows quick readings but requires a lot of care against drifts

A calibration procedure using another type of sensor and a TC psycrometer. Cooling time is described http://info.ngwa.org/GWOL/pdf/860139071.pdf