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Title: Rotary Positive Displacement Meters Theory, Development, And Future Applications
Author: Thomas H. Loga
Source: 1990 International Symposium on Fluid Flow Measurement
Year Published: 1990
Abstract: Rotary positive displacement meters were first introduced in the early 1920s. Since their introduction they have won an ever increasing support from their users in both the distribution and transmission gas markets. This continued and growing enthusiasm can be related to the basis of all meter selections: price, size, and weight. In addition to these three important factors, the rotary positive displacement meter has an inherent and distinctive feature: permanent accuracy . It is permanent because its volumetric displacement is fixed and cannot be adjusted.




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