ISPE Glossary of Pharmaceutical and Biotechnology Terminology

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A specific degree of heat intensity. There are three temperature designations associated with psychrometrics:

1. Dry Bulb (DB) – The air temperature as measured by a standard thermometer.

2. Wet Bulb (WB) – The air temperature measured by a thermometer with its reservoir bulb wrapped in a moistened cloth wick and exposed to an air stream moving at a velocity of 1,000 feet per minute.

3. Dewpoint temperature (DP) – Also called Saturation Temperature is the temperature at which condensation of moisture begins (air is holding 100% of the moisture it can) when the air is cooled, measured in °F.

See also: Psychrometer

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