This display requires that JavaScripts be enabled in your browser. For instructions, view
Close This Window
View entire text

Related Data Sets
View all records related to this instrument

A psychrometer is an instrument used for measuring the water
vapor content of the atmosphere; a type of hygrometer. It
consists of two thermometers, one of which (the dry bulb) is an
ordinary glass thermometer, while the other (wet bulb) has its
bulb covered with a jacket of clean muslin, which is saturated
with distilled water before an observation. When the bulbs are
suitably ventilated, they indicate the thermodynamic wet- and
dry-bulb temperatures of the atmosphere. One variety is the
Assman psychrometer (a special form of aspiration psychrometer
for which the ventilation is provided by a suction fan).

Additional information available at

[Summary provided by the National Snow and Ice Data Center]

Close This Window