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Title: Diaphragm Meter Capacity Ratings At Elevated Pressures
Author: H. W. Berghegger
Source: 1968 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1968
Abstract: Through the years, the gas industry has been steadily improving, especially from a technological and product improvements viewpoint. Today, the gas industrty has standardized on most applications, methods and definitions as compared to the knowledge possessed just twenty short years ago. Within the measurement field, two important areas are still open for discussion and at the discretion of the individual persons or companies operating within these areas. One is the lack of an industry standard definition for a standard cubic foot of natural gas and second is the lack of an industry standard for diaphragm meter capacity ratings at elevated pressures. There are presently in use a minimum of ten different base pressures, each of which defines a standard cubic foot of natural gas. There are many different methods of gas measurement in use today - the three most common are diaphragm displacement meters, rotary displacement meters and inferential or orifice meters.

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