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Title: A Six-Laboratory Intercomparison Of Water Flow Measurement Facilities
Author: Frank C. Kinghorn, David J. m. Smith, Andrew Mckay
Source: 1986 International Symposium on Fluid Flow Measurement
Year Published: 1986
Abstract: A transfer standard flowmeter package, consisting of 200 mm diameter pipework with two orifice plates separated by a length of pipework containing a flow straightener, was designed and constructed at NEL to enable an intercomparison of the worlds major water flow measurement facilities. It has been tested in the Netherlands, Federal Republic of Germany, England, USA, and Japan between 1980 and 1986, being returned to NEL on several occasions during the period for check tests. The calibration of two flowmeters in series permitted the use of a statistical analysis technique first proposed by Youden (1) to identify whether discrepancies between the results from different laboratories were significant and whether they arose from the reference flowrate measurement methods used, the differential pressure measurements, or the velocity distribution approaching the test section. Although discrepancies were detected, the results from all laboratories lay within about 0.25 per cent of the overall mean, indicating very good agreement.

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