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Title: Determination Of Water Vapor Content In Natural Gas
Author: Colin B. Blakemore
Source: 2006 International School of Hydrocarbon Measurement
Year Published: 2006
Abstract: Manual chilled mirror dewpoint instruments were the first widely used process monitors, and are still used today. The Bureau of Mines Dewpointer is the classic example of this type. The output is the temperature at which liquid dew or frost forms. The operator must distinguish between water and hydrocarbon dewpoints. In the mid-1950s DuPont began manufacturing refrigerants. They needed a moisture analyzer that would measure the water concentration in gases that liquefy at temperatures above that of the water dewpoint. They invented the electrolytic moisture analyzer (P2O5). The output of this instrument is moisture concentration, ppm. The Torry Research Station, Aberdeen, Scotland, developed aluminum oxide moisture sensors also in the mid- 1950s. They were first used to measure the moisture in fish drying ovens. They were first widely used on weather balloons to measure atmospheric humidity. ESSO Research and Development developed the quartz crystal (QCM) based moisture sensor in the mid-1960s. These sensors were first used to measure moisture in the catalytic reformer?s hydrogen recycle gas.

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