The comparison CCM.FF-K6.2011 was organized for the purpose of determination of the degree of equivalence of the national standards for low-pressure gas flow measurement over the range (2 to 100) m3/h. A rotary gas meter was used as a transfer standard. The measurements were provided at prescribed reference conditions. Eleven laboratories from four RMOs participated in this key comparison—EURAMET: PTB, Germany; SMU, Slovakia; LNE-LADG, France; SIM: NIST, USA; CENAM, Mexico; APMP: NMIJ AIST Japan; KRISS, Korea; NMI, Australia; NIM, China; CMS, Chinese Taipei; COOMET: GP GP Ivano-Frankivs'kstandart-metrologia, Ukraine and all participants reported independent traceability chains to the SI. All results were used in the determination of the key comparison reference value (KCRV) and the uncertainty of the KCRV. The reference value was determined at each flow separately following procedure A presented by M G Cox. The degree of equivalence with the KCRV was also calculated for each flow and laboratory. All reported results were consistent with the KCRV. This KCRV can now be used in the further regional comparisons.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 the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
The EURAMET.M.FF-K6 comparison was organized for the purpose of determination of the degree of equivalence of the primary (national) standards for low-pressure gas flow measurement over the range (2 to 100) m3/h and was performed simultaneously with CCM.FF-K6.2011 with the same transfer standard. A rotary gas meter G65 was used as a transfer standard. The measurements were provided by prescribed reference conditions. Fifteen laboratories from EURAMET participated in this key comparison - SMU, Slovakia; PTB, Germany; CEM, Spain; LNE-LADG, France; VSL, Netherlands; CMI, Czech Republic; BEV, Austria; MKEH, Hungary; GUM Poland; SP, Sweden; METAS, Switzerland; DMDM, Serbia; TUBITAK-UME, Turkey; EIM, Greece; IMBiH, Bosnia-Herzegovina. The EURAMET.M.FF-K6 is linked to the CCM.FF-K6.2011 by correcting the results of three linking laboratories (Slovakia SMU, Germany PTB and France LNE LADG). This correction provides an estimate of what would have been the result from the EURAMET.M-FF-K6 participants, if they had actually participated in CCM.FF-K6.2011. According to the evaluation 93.7 % of the results were consistent with KCRV, 3.4 % of the results were in the warning level and 2.9 % of the results were inconsistent.The results of this comparison can be used for review of the CMC tables.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 CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
This paper is focused on the calibration and measurement of the geometric parameters of a bell prover that serves as a standard of volume of gas flow. It also includes methods for monitoring the time stability of the bell prover: intra-and inter-laboratory comparison measurements, Shewhart analysis and planned evaluation of recalibration intervals.
COOMET project no 219/SK-a/00 'Performance of comparison measurements of testing standard equipment working in the gas flowrate range: (A) 0.06 m3/h to 10 m3/h; (B) 100 m3/h to 1000 m3/h', ref. no COOMET.M.FF-S1 has been organized by TC 1.4 'Flow measurement' of COOMET, started in March 2006 and finished in October 2008.Type of comparison – supplementary; Pilot laboratory – SMU, Slovak Institute of Metrology. Participating institutes (and countries): SMU, Slovakia; PTB, Germany; LEI, Lithuania; BelGIM, Belarus; FGUP VNIIR, Russia; SE 'Ivano-Frankovskstandartmetrology', Ukraine; NISM, Moldavia.The comparison was realized at two levels.Within the first level (A*), the comparisons of the test rigs were realized for verification of the diaphragm domestic gas meters in the flow range of 0.12 m3/h to 10 m3/h. The compared measurement means were the set of five diaphragm gas meters of type MKM, size G6. Two laboratories (SMU Bratislava, Slovakia and LEI Kaunas, Lithuania) of the seven participating laboratories at this level are participants in projects of comparisons, which are organized within the regional metrological organization EUROMET.The second level (B*) assured a comparison measurement of testing devices for industry gas meters of flow range from 100 m3/h to 1000 m3/h. the comparison meter was an axial turbine gas meter of DAE type, G650 size serial number 0004455/2005. Seven laboratories participated at this level of the project, including the laboratory of Belarus with a limited flow rate range (from 100 m3/h to 400 m3/h). Three laboratories (PTB Braunschweig, Germany; SMU Bratislava, Slovakia and LEI Kaunas, Lithuania) of the seven participating laboratories at this level are participants of comparisons, which are organized within the regional metrological organization EUROMET; out of that group the laboratory PTB Braunschweig, Germany is also participant in a CIPM key comparison.Based on the given results, one can say that the first comparison in this field within the COOMET regional organization achieved good results.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 (MRA).
COOMET project no 219/SK-a/00 'Performance of comparison measurements of testing standard equipment working in the gas flowrate range: (A) 0.06 m3/h to 10 m3/h; (B) 100 m3/h to 1000 m3/h', ref. no COOMET.M.FF-S1 has been organized by TC 1.4 'Flow measurement' of COOMET, started in March 2006 and finished in October 2008.Type of comparison – supplementary; Pilot laboratory – SMU, Slovak Institute of Metrology. Participating institutes (and countries): SMU, Slovakia; PTB, Germany; LEI, Lithuania; BelGIM, Belarus; FGUP VNIIR, Russia; SE 'Ivano-Frankovskstandartmetrology', Ukraine; NISM, Moldavia.The comparison was realized at two levels.Within the first level (A*), the comparisons of the test rigs were realized for verification of the diaphragm domestic gas meters in the flow range of 0.12 m3/h to 10 m3/h. The compared measurement means were the set of five diaphragm gas meters of type MKM, size G6. Two laboratories (SMU Bratislava, Slovakia and LEI Kaunas, Lithuania) of the seven participating laboratories at this level are participants in projects of comparisons, which are organized within the regional metrological organization EUROMET.The second level (B*) assured a comparison measurement of testing devices for industry gas meters of flow range from 100 m3/h to 1000 m3/h. The comparison meter was an axial turbine gas meter of DAE type, G650 size serial number 0004455/2005. Seven laboratories participated at this level of the project, including the laboratory of Belarus with a limited flow rate range (from 100 m3/h to 400 m3/h). Three laboratories (PTB Braunschweig, Germany; SMU Bratislava, Slovakia and LEI Kaunas, Lithuania) of the seven participating laboratories at this level are participants of comparisons, which are organized within the regional metrological organization EUROMET; out of that group the laboratory PTB Braunschweig, Germany is also participant in a CIPM key comparison.Based on the given results, one can say that the first comparison in this field within the COOMET regional organization achieved good results.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 (MRA).
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