DIN 50012-2 E : 1986
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
CLIMATES AND THEIR TECHNICAL APPLICATION; METHODS OF MEASURING HUMIDITY; PSYCHROMETERS
Hardcopy , PDF
09-01-2008
English
01-01-1986
An aspirated psychrometer measures the difference in air temperature (psychrometric temperature depression) which is produced when air is blows at a fixed velocity both past a thermometer whose bulb is fitted with a moist fabric sleeve (wet-bulb thermometer) and past a thermometer without a fabric sleeve (dry-bulb thermometer). As a result of the difference between the partial pressure of the water vapour of the air flowing part and the water vapour saturation pressure above the wet thermometer, water evaporates at this point.
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