Final report on APMP.M.P-S3: Results of the supplementary comparison in gas media in the range 1.77 MPa to 6.8 MPa

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This report provides the results of the supplementary bilateral comparison APMP.M.P-S3 between NMI Australia (NMIA) and INRIM, Italy executed from November 2010 to November 2011. NMIA acted as the pilot laboratory and provided a Ruska G series piston gauge as the transfer standard, with a nominal area 16.8 mm2 requiring a nominal load of 12 kg to balance a pressure of 7.0 MPa. The purpose of this supplementary bilateral comparison was to provide data for linking NMIA to CCM.P-K1.c in the pressure range greater than 4 MPa to extend the range covered by key comparison APMP.M.P-K1c. The original protocol called for the pressure range from 80 kPa to 6.80 MPa. Both participants agreed to limit this comparison range to 1.77 MPa to 6.50 MPa.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 APMP, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).