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Title: Mechanically Driven Electronic Correction Devices
Author: Bernard J. Kemperman Mineral Wells, Tx
Source: 1989 International School of Hydrocarbon Measurement
Year Published: 1989
Abstract: In the 1930s, when more and more companies began to sell large volumes of gas at elevated pressures, i.e. at pressures above inches water column, it became apparent that a device was needed which, either clock or meter driven, would correct the measured volume for pressure and temperature. And, necessity being the mother of invention, it was not long before the first such instrument came on the market. These instruments were essentially like mechanical calculators of which certain inputs were automatically adjustable as a function of changing pressure and temperature. A great many of such instruments are still in use today and their design has not been changed a great deal since the first units were introduced in the mid-thirties.

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