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Title: DIAGNOSTICS FOR LARGE HIGH VOLUME FLOW ORIFICE PLATE METERS
Author: Mark Skelton, Simon Barrons, Jennifer Ayre, Richard Steven
Source: 2022 Appalachian Gas Measurement Short Course
Year Published: 2022
Abstract: In 2008/9 DP Diagnostics disclosed a proprietary dif- ferential pressure (DP) meter diagnostic methodology 1,2. Swinton Technology (ST) has subsequently devel- oped software named Prognosis in partnership with DP Diagnostics. Prognosis allows these generic DP meter diagnostic methodologies to be applied in flow comput- ers thereby making these principles available for field applications. Whereas initial DP Diagnostics technical papers concen- trated on proving the diagnostic principles a simple way of presenting the diagnostic results was also proposed. The diagnostic analysis could be plotted as points on a graph which could be shown live in a control room (or ar- chived for later analysis). After a review of the diagnostic methods this paper discusses diagnostic pattern recog- nition for this graphical representation. It can be shown that when the diagnostics signal a warning the pattern of points can indicate extra information regarding the source of the problem. New CEESI Iowa test facility, BP Central Area Transmission System and ConocoPhillips Theddlethorpe gas terminal large orifice meter data sets are presented here showing these principles.

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