Microbalance application in the primary gravimetric hygrometer of the uk national humidity standard

John C C Day, Andrew Forton

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

In 1981 the decision was taken to establish a National Standard for humidity measurement at the National Physical Laboratory, England. The instrument system consists of two major parts, the Precision Humidity Generator and the Primary Gravimetric Hygrometer (PGH). The latter has been developed by Sira Ltd under a contract from NPL (ref. 1). In this paper, following a concise description of the principles of the Primary Gravimetric Hygrometer, aspects of the vacuum microbalance system are discussed.
Original languageEnglish
Pages (from-to)75
Number of pages82
JournalThermochimica Acta
Volume103
Issue number1
Publication statusPublished - Jan 1986

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