EUROMET Project 852: A comparison between Italian and Swiss gas flow standards in the range 0.3 m^sup 3^/h to 25 m^sup 3^/h

An interlaboratory comparison (EUROMET Project 852) of four primary standard gas provers was carried out between the Italian and Swiss NMIs (IMGC/INRIM and METAS) from 0.3 m.../h to 25 m.../h using ambient air. The transfer standard was a G25 rotary piston meter. The comparison showed a full compati...

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Bibliographic Details
Published in:Metrologia 2008-01, Vol.45, p.45
Main Authors: Baumann, Henri, Cignolo, Giorgio, Clausen, Mario, Goria, Roberto
Format: Article
Language:English
Subjects:
Accuracy
Gas flow
International comparisons
Online Access:Get full text
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Summary:An interlaboratory comparison (EUROMET Project 852) of four primary standard gas provers was carried out between the Italian and Swiss NMIs (IMGC/INRIM and METAS) from 0.3 m.../h to 25 m.../h using ambient air. The transfer standard was a G25 rotary piston meter. The comparison showed a full compatibility of all four provers above 4 m.../h, whereas at lower flows some discrepancies occurred, whose causes are discussed. The results generally confirm the improved accuracy of the large piston provers pioneered by both laboratories, if compared to bell provers, a couple of which were also tested. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0026-1394
1681-7575