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The Moisture Content of the Air in Equilibrium with Certain Desiccants

Published

Author(s)

Peter H. Huang

Abstract

The water vapor content of the air in equilibrium with various chemical desiccants at 28 C 1 C has been determined by using an advanced micro-sensor and measuring its electrical capacitance at a frequency of 20 kHz. The microsensor was calibrated against the National Institute of Standards and Technology (NIST) Two-Pressure Humidity Generator. The desiccants tested and the water vapor concentration in milligrams per kilogram of dry air are calcium chloride, 15; sodium hydroxide, 89 and zinc chloride, 446. Their respective relative expanded uncertainties with k=2 in percent of the concentration value are 20 %, 13 % and 9 %.
Citation
International Symposium on Humidity and Moisture
Volume
1

Keywords

Desiccant, Humidity measurement, humidity sensor, moisture content

Citation

Huang, P. (2002), The Moisture Content of the Air in Equilibrium with Certain Desiccants, International Symposium on Humidity and Moisture (Accessed April 23, 2024)
Created October 1, 2002, Updated February 17, 2017