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Title: Reynolds Number, The Correct Calibration, Characterization And Proving Of Flow Meters
Author: T. Cousins
Source: 2016 North Sea Flow Measurement Workshop
Year Published: 2016
Abstract: The flow world has forgotten the importance of Reyn olds number for determining the performance of flow meters. Many users and even man ufacturers do not understand the meaning or implication of this concept. The implica tion of the reality that flow meter performance is dictated by the Reynolds number is t hat meter manufacturers with in- house water calibration laboratories have to send t heir meters to third party independent calibration facilities in order for many of their m eters to be properly calibrated for their applications. In turn operators have to pay more fo r a correctly calibrated meter. This has resulted in some cases as total denial by the f low meter manufacturers who do not want their meters to be dictated by Reynolds number , with the consequent extra calibration expense. API MPMS chapter 4, one of the better standards assiduously avoids any mention of Reynolds number by saying the meters should be reproved if there is a significant change in viscosity.

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