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ISO 4677-1:1985
Atmospheres for conditioning and testing -- Determination of relative humidity -- Part 1: Aspirated psychrometer method
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Abstract
The method specified applies for temperatures within the range from 5 to 80 °C. The property is determined with an uncertainty either not exceeding 3 % r. h. or not exceeding 3 % r. h., depending on the uncertainty in the value obtained for the wet-bulb temperature depression and on whether or not the dry-bulb temperature exceeds 40 °C.
