Comparisons of standards for liquid flow rates under static load changes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F24%3AN0000153" target="_blank" >RIV/00177016:_____/24:N0000153 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/0026-1394/61/1A/07003" target="_blank" >https://iopscience.iop.org/article/10.1088/0026-1394/61/1A/07003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0026-1394/61/1A/07003" target="_blank" >10.1088/0026-1394/61/1A/07003</a>

Result language

angličtina

Original language name

Comparisons of standards for liquid flow rates under static load changes

Original language description

This paper presents the results of an inter-laboratory comparison (ILC) organized in order to determine the degrees of equivalence of standards for liquid static flow rates in the range of 50 kg/h to 36 000 kg/h under ambient pressure and temperature conditions. Water was used as the calibration fluid. The objective of the comparison was to support and prove the Calibration and Measurement Capabilities (CMC) in liquid flow of the participating NMIs and DIs CETIAT (France), PTB (Germany), FORCE (Denmark), DTI (Denmark), CMI (Czech Republic), RISE (Sweden), VTT (Finland), BEV (Austria), LEI (Lithuania), SMU (Slovakia) and UME TUBITAK (Turkey). The comparison was organized and evaluated by CETIAT, CMI and PTB as pilot laboratories. The comparison was carried out as a three-loop robin, which started in September 2020 at CETIAT and finished in June 2021, also at CETIAT. Two Coriolis mass flow meters were used as transfer standards. In order to estimate the uncertainties uTS, both transfer meters were subjected to characterization measurements at pilot laboratory CETIAT. The following parameters were researched in detail: fluid temperature, line pressure, reproducibility and the effect of zero setting. Following the results of the Chi2-test, one set point of one participant was discarded from the EN calculation. The comparison shows very good agreement between the 11 participating laboratories. Only one laboratory failed the comparison at two set points due to an EN value > 1.2. Two laboratories showed comparison results at "warning level". In order to follow the latest developments in the field of flow comparison evaluation, the standard procedure of COX (2002) was extended by an application of two additional criteria, as for inconclusive or conclusive decisions for calibration. In sum, four laboratories were affected by inconclusive calibration results.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20302 - Applied mechanics

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Metrologia

ISSN

1681-7575

e-ISSN

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Volume of the periodical

61

Issue of the periodical within the volume

1A

Country of publishing house

GB - UNITED KINGDOM

Number of pages

55

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85184507603