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Title: In-Situ On-Site Gas Meter Proving
Author: Edgar B. Bowles, Jr. Adam Hawley
Source: 2017 International School of Hydrocarbon Measurement
Year Published: 2017
Abstract: Natural gas flow rate measurement errors at field meter stations can result from the installation configuration, the calibration of the meter at conditions other than the actual operating conditions, or the degradation of meter performance over time. The best method for eliminating these or other sources of error is with in-situ (on-site) calibration of the meter. That is, the measurement accuracy of the field meter station should be verified under actual operating conditions by comparing to a master meter or prover. Comparisons of flow meters in the field have been performed for nearly as long as flow meters have been in existence. For example, Figure 1 shows an orifice meter being compared to three 60-A tin meters (a.k.a., diaphragm meters) in Rosedale, Kansas in 1921.1 Each tin meter had the flow capacity of 1,800 standard cubic feet per hour. In this particular test, a 1.6% difference in reading was discovered between the orifice meter and the tin meters.

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