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Title: A Gran Chimera? Flowrate Prediction Biases of a Malfunctioning Orifice Meter Calculated in Real Time via Internal Meter Diagnostics
Author: Richard Steven
Source: 2018 North Sea Flow Measurement Workshop
Year Published: 2018
Abstract: This paper discusses the development of the capabilities of an orifice meter verification system. The DP Diagnostics verification system uses a downstream pressure tap (e.g. see Figure 1) to access the information contained within the meters entire pressure field. An automated system has been developed to state in real time when the meter has a problem, and then by use of pattern recognition to state what that problem is, or short list the possible problems. For many common orifice meter malfunctions, the system is now developed to also estimate the associated flow prediction bias in real time. The benefit of such additional information to flow meter terotechnology, i.e. the optimization of flow meter maintenance and operation, as well as supporting audits, and lost and unaccounted for product calculations etc., are self evident.

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