Field tests of correction procedures for turbine flowmeters in pulsatile flows

Turbine flowmeters are known to be susceptible to over-registration errors in pulsatile gas flows. The results of applying three possible correction procedures to the outputs from meters installed in Dutch natural gas supply lines are compared. Large amplitude, periodic flow variations were observed...

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Bibliographic Details
Published inFlow measurement and instrumentation Vol. 7; no. 1; pp. 7 - 17
Main Authors Cheesewright, R, Atkinson, K N, Clark, C, ter Horst, GJP, Mottram, R C, Viljeer, J
Format Journal Article
LanguageEnglish
Published 1996
Subjects
Error analysis
Error correction
Gas pipelines
Instrument errors
Oscillations
Pulsatile flow
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Summary:Turbine flowmeters are known to be susceptible to over-registration errors in pulsatile gas flows. The results of applying three possible correction procedures to the outputs from meters installed in Dutch natural gas supply lines are compared. Large amplitude, periodic flow variations were observed both due to pressure regulator oscillations and to irregular gas usage. Errors as high as 60% were observed. Correction procedures assuming sinusoidal pulsation profiles were found to be inappropriate in these flows. Except for intermittent flows, correction to an accuracy of better than plus or minus 2% was found to be possible.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0955-5986
DOI:10.1016/0955-5986(96)00004-0