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Title: Effect And Control Of Pulsation In Gas Measurement
Author: L. C. Sullivan
Source: 1970 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1970
Abstract: Orifice plates have long been accepted by the Gas Industry as a reliable primary device to measure gas flow. Under the great majority of circumstances the repeatability and accuracy demonstrated by this device more than justified this confidence. Although reliable, under most circumstances, substantial error has been observed in orifices attempting to measure gas under non-steady flow conditions. This non-steady flow commonly referred to as pulsation, frequently occurs near a compressor and consists of rapidly cycling pressure with a frequency equal to gas compressor speed or a multiple thereof.

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