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Title: Pulsation Mitigation In Gas Flow Measurement
Author: Robert J. Mckee
Source: 2003 Western Gas Measurement Short Course
Year Published: 2003
Abstract: Pulsation is any periodic variation in pressure and flow velocity at one location in a pipe and from point to point along the pipe. Many common features in pipelines, including compressors, pressure regulators, control valves, and pipe branches cause or contribute to pulsation. In turn, pulsation causes errors in nearly all types of flow meters used for gas flow measurement. This paper not only discusses the sources of pulsation and shows how pulsation adversely affects flow meters, but also explains in detail applicable methods for mitigation of pulsation effects. Properly designed acoustic filters are the most effective means for eliminating pulsation, and a design method for a simple acoustic filter is presented. Other methods to control the sources, reduce the effects, or attenuate the amplitude of pulsation are also discussed.

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