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Title: DIFFERENTIAL TESTING OF ROTARY METERS
Author: Ron Walker
Source: 2019 Appalachian Gas Measurement Short Course
Year Published: 2019
Abstract: Since the introduction of rotary meters in the 1920s, gas distribution companies have used the differential pressure across the meter as an indication of meter condition and performance. Using manufacturers recommendations in concert with industry and regulatory standards differential testing is a cost effective method to verify the condition of a rotary meter while in service. With acceptance by many U.S. public utility commissions, differential testing has been used by gas distribution companies for many years. This paper will discuss the traditional methods used for differential testing as well as the most recent developments that improve the efficiency and effectiveness of a differential pressure testing program.

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