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Title: Design And Operation Of Rotary And Turbine Meter Installations
Author: John J. Janicki
Source: 1983 Appalachian Gas Measurement Short Course
Year Published: 1983
Abstract: The first rotary meters were developed in the early 1920s and have been used as a gas measuring device for many years. A rotary meter is classified as a positive displacement meter since it measures volume by alternately filling and emptying measuring chambers of constant volume in a repeating process. There are two basic rotary design types in use today, the first being the original impeller type as shown in Figure 1, which consists of two figure 8 contour impellers rotating in opposite directions, providing four separate gas volumes per revolution.

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