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Title: Gas Measurement By Rotary Meters
Author: Jack Fly
Source: 1965 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1965
Abstract: This paper will give the history, principle of operation, construction details, selection, installation, maintenance, proving, possible troubles to avoid, and economics of Rotary Meters. HISTORY The rotary meter design was conceived in 1854. F. M. and P. H. Roots, (brothers and partners in the woolen milling business) needed a more efficient water wheel. Even though their idea for an improved water motor didnt work as a mill driver, they discovered it worked very well as a blower. New markets for their invention were subsequently found and a competitive business started. In 1920 the first rotary meter was made by installing a revolution counter on a blower. In 1962 Roots changed the appearance and several design features in their meters. The new M125 series are now available from 3,000 to 102,000 CFH displaced volume at 125 p.s.i. working pressure

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