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Title: Orifice Meter Diagnostics - A Discussion On Theory, Laboratory Tests, System Interface And Field Results
Author: Richard Steven,Casey Hodges
Source: 2012 International Symposium on Fluid Flow Measurement
Year Published: 2012
Abstract: the generic family of differential pressure (DP) meters. All generic DP meters operate according to the same physical principles. In 2008 a theoretical DP meter diagnostic concept was described by Steven 1. In 2009 this theoretical concept was developed into a proposed practical industrial system. Swinton Technology and DP Diagnostics have now developed the product (called Prognosis). In 2010 Prognosis was successfully field tested on orifice plate meters by BP and ConocoPhillips (see Skelton 3). Over the last two years the technology has been further refined and systems are now operational in various DP meter applications around the world. In this paper the diagnostic theory for orifice meters is discussed in relation to recent improvements to the diagnostic system. CEESI laboratory test results are shown from the recently upgraded diagnostic system monitoring correctly operating and deliberately malfunctioning orifice meters. Finally, as part of a Prognosis field trial CEESI Measurement Solutions Inc. (CMSI) included Prognosis on orifice meter station auditing projects. The subsequent response of Prognosis to correctly operating and malfunctioning live natural gas orifice meters is shown

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