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Title: High Pressure Calibration Of Gas Turbine Meters In Carbon Dioxide
Author: Paul W. Tang
Source: 2008 American School of Gas Measurement Technology
Year Published: 2008
Abstract: The pressure sensitivity of turbine meters is a well-observed phenomenon since the inception of these devices. Unfortunately, very little organized experimental data were available for study until recently. Due to the ever-rising energy costs, the natural gas industry is paying much more attention to improve the accuracy of natural gas flow measurement. The latest revision of the AGA No.7 report recommends that a turbine meter should be calibrated close to its intended operating conditions in order to minimize measurement error caused by pressure variation. This paper describes a novel approach in high-pressure turbine meter proving using carbon dioxide gas as a test medium. The concept of Reynolds number turbine meter proving is explained. Test data demonstrating the validity of the Reynolds number matching method are presented and the description of a high-pressure turbine meter calibration facility based on this new technology is given.

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