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Title: Gas Measurement By Rotary Meters
Author: Gary L. Hanson
Source: 1975 International School of Hydrocarbon Measurement
Year Published: 1975
Abstract: In 1920, the PH & FM ROOTS Company and the Connersv i l l e Blower Company, both located in Connersville, Indiana, built the first rotary positive displacement gas meter. The two companies joined to form the ROOTS-CONNERSVILLE Blower, and in 1966 the gas meter line was formed into a new company named Dresser Measurement Division. The figure-8 lobed rotary gas meters made by this company are known as ROOTS Meters. Early in the 1960s, Rockwell International entered the market with a rotating vane design known as the ROTOSEAL Meter , and late in the 1960s, Singer American Meter Company introduced still another rotating vane design known as a CVM gas meter. The various principles of operation for these three meters are shown and described in Exhibit * 1 . Since the majority of meters in use today are the ROOTS Meter, the comments in this paper w i l l be directed toward the ROOTS Meter however, most comments are directly applicable to all types of rotary meters.

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