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Title: Fundamental Principles Of Rotary Displacement Meters
Author: K. C. Beaver
Source: 1986 International School of Hydrocarbon Measurement
Year Published: 1986
Abstract: ROTARY METER HISTORY The rotary meter is a long-term, f i e l d proven measurement concept f i r s t introduced about 1920 by the ROOTS Connersville Company (now Dresser Measurement). For approximately the next 25 years, the rotary meter found i t s market in measuring large gas loads at relatively low pressure. The basic concept, as described later, proved the v i a b i l i t y of the rotary meter. In the mid to late late 1950s, while s t i l l using the basic configuration, significant changes were made to decrease the size, increase the allowable pressure, and improve the accuracy. These design changes were in response to the need to measure gas at higher pressures as natural gas became widely available. Just after t h i s , the trend to make smaller meters using the same lobed configuration took hold and resulted in the f i r s t line mount meters. This trend has continued until now, in the U.S., rotaries are manufactured from the 10 flange 102M125 down to the 1-1/2 8C125 meter.

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