Whirling psychrometer (type of hygrometer) Whirling psychrometer (type of hygrometer) Whirling psychrometer (type of hygrometer) Whirling psychrometer (type of hygrometer) Whirling psychrometer (type of hygrometer) Whirling psychrometer (type of hygrometer)

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Whirling psychrometer (type of hygrometer)
Science Museum Group
© The Board of Trustees of the Science Museum

Whirling psychrometer (type of hygrometer)
Science Museum Group
© The Board of Trustees of the Science Museum

Whirling psychrometer (type of hygrometer)
Science Museum Group
© The Board of Trustees of the Science Museum

Whirling psychrometer (type of hygrometer)
Science Museum Group
© The Board of Trustees of the Science Museum

Whirling psychrometer (type of hygrometer)
Science Museum Group
© The Board of Trustees of the Science Museum

Whirling psychrometer (type of hygrometer)
Science Museum Group
© The Board of Trustees of the Science Museum

Whirling psychrometer, also known as a sling psychrometer, for measuring humidity, designed by J. J. Griffin & Son Ltd. and made to B.S.2842 by A. Gallenkamp & Co. Ltd., Finsbury, London, UK, 1950-1953. Contains wet and dry bulb thermometers.

Whirling or sling psychrometers are types of hygrometers for measuring air humidity. They contain two thermometers, one of which has a bulb kept wet with a cloth soaked in distilled water. The device is whirled rapidly in the air, and the difference in the readings between the two thermometers gives a measure of humidity.

Details

Category:
Meteorology
Object Number:
1993-1037
Materials:
wood (unidentified), brass (copper, zinc alloy), steel (metal), glass, mercury, textile and chromium plated
Measurements:
overall (lying down): 30 mm x 215 mm x 175 mm, .215kg
type:
hygrometer and psychrometer
credit:
Physiological Society