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Title: Turbine Meter Research In Support Of The Revision Of AGA Report No. 7
Author: Darin L. George
Source: 2002 International Symposium on Fluid Flow Measurement
Year Published: 2002
Abstract: In support of the planned revision of American Gas Association (AGA) Report No. 7, commercial turbine flow meters have been tested at the Gas Technology Institute (GTI) Metering Research Facility (MRF). This paper presents the test results, which were obtained from the MRF Low Pressure Loop (LPL) using natural gas as the test medium. Four commercially-available turbine meters, including high-capacity meters and single-rotor and dual-rotor designs, were evaluated. The meters were tested in the three different installation configurations referenced in the current version of AGA-7. These installations included the recommended meter run configuration, the close-coupled configuration, and the short-coupled configuration. Results were compared to determine the relative measurement biases of the test meters in these three different piping arrangements. Meters were also tested with a straight length of pipe installed upstream and with the ISO 9951 high-level perturbation piping immediately upstream of the meter runs, to evaluate meter performance in the presence of asymmetric, high swirl flows. The data are presented from the perspective of proposed revisions to the AGA-7 guidelines.

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