Abstract
Proposed method, based on the Venturi sonic nozzles as a transfer standard for bell prover calibration. The method ensures a detailed evaluation of the displaced volume for doses, approximately 5 dm³, with an uncertainty better than 0,2 %.
Calibration of bell prover in the small volumes range
Authors J. Wildner, A. Zadworny - Central Office of Measures (Główny Urząd Miar); M. Turkowski, M. Szudarek, A. Szczecki - Warsaw University of Technology (Politechnika Warszawska)
Bibliography
[1] M. Turkowski: Błędy wzorcowania gazomierzy i przepływomierzy gazu na stanowiskach z dyszami krytycznymi. PAR nr 1 (1998) s. 27-29.
[2] PN-EN ISO 9300: Pomiary strumienia masy gazu za pomocą dysz Venturiego o przepływie krytycznym.
[3] G. Wendt i in: PTB Testing Instructions. Volume 25. Gas meters - Test rigs with critical nozzles. Physikalisch-Technische Bundesanstalt, 2000, Braunschweig.
[4] Rozporządzenie Ministra Gospodarki i Pracy z dnia 12 stycznia 2005 r. w sprawie tworzenia punktów legalizacyjnych.
[5] Evaluation of measurement data - Guide to the expression of uncertainty in measurement. JCGM 100: 2008.
[6] Evaluation of the Uncertainty of Measurement in calibration. EA-4/02 M:2013.
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