Humidity sensor using conductivity type transducer
- 1 August 1995
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 66 (8) , 4367-4369
- https://doi.org/10.1063/1.1145329
Abstract
The alternating current conductance of ammonium paratungstate pentahydrate (APT⋅5H2O) is found to change sensitively (response time ∼3 min) with changes in relative humidity, but to remain practically independent over a wide range of frequency (100 Hz–10 KHz) and temperature (up to 80 °C). This property of APT⋅5H2O has been utilized to design a sensitive humidity sensor. A circuit has been developed whose output is a voltage varying with relative humidity.Keywords
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