Test time for RH test

[jigar0896]

Hi All:

Could someone let me know if there is a test time restriction for the moisture testing using the RH probes? ASTM 2170 says that the RH and temperature reading should be taken after 72 hrs. Unlike the Calcium Chloride test, the insitu moisture test standard does not specify a not to exceed time for taking the readings. Does it make a difference if the reading is taken at say 84 hrs or 96 hrs given that the environment inside the building shell remains relatively the same during that time.

Thanks in advance for helping me get a solution to my question.