Final report on COOMET.M.FF-S3: Intercomparison measurements in the field of gas flow and volume

Abstract

The national metrology institutes of Ukraine, Slovakia, Lithuania and Russia conducted a comparison in gas flow from 4 m3/h to 160 m3/h using a positive displacement flow meter as the transfer device. The participants' flow standards are described. The uncertainty contributed to the comparison by the transfer device (0.13%) was assessed by calibrations performed in the pilot laboratory at the beginning and end of the comparison. The standardized degrees of equivalence between each participant's results and the comparison reference values were less than unity except for one flow measurement at one lab where it was 1.07, demonstrating agreement within uncertainty expectations between the participants.Main text.To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.The final report has been peer-reviewed and approved for publication by COOMET, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).