A capacitance-resistance hygrometer
- 1 November 1955
- journal article
- Published by IOP Publishing in Journal of Scientific Instruments
- Vol. 32 (11) , 425-431
- https://doi.org/10.1088/0950-7671/32/11/305
Abstract
A new type of hygrometer is described. Indications of relative humidity are given by changes of the electrical properties of anodized aluminium oxide layers. The calibration is independent of temperature from 0 to 80° C, and of the air speed. The instrument is extremely sensitive, and may be easily adapted for continuous recording and control. A theory accounting for the observations is outlined.Keywords
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