Progress Report on APMP. M Progress Report on APMP.M.FF-K2 Hydrocarbon Flow (bilateral comparison) Chun-Min Su CMS/ITRI, Chinese Taipei Nov. 26, 2012, APMP 2012 TCFF Meeting Wellington, New Zealand

Introduction Pilot Laboratory: CMS/ Chinese Taipei Participant laboratory: VMI/ Vietnam Overview of comparison Transfer standard: 4" PD meter (Kral) Test flowrates: (5 to 30) L/s, 11 flow points Original Cardinal point: Re= 76 150 New comparison point: Re= 120 000 Comparison parameter: Strouhal No. (temperature-compensated) Strouhal = K × D3 2018/11/18

Summary of the Comparison CMS tested the TS with solvent oil @ 20 ℃ and 35 ℃ (Comparison point @ 34.9 ℃) VMI tested the TS with kerosene @ 29.0 ℃ to 36.4 ℃ (Comparison point @ 29.3 ℃) NMIJ was invited to perform tests with kerosene and light oil @ 20 ℃ and 35 ℃ Comparison was made without viscosity correction The En value of VMI at Re=120000 is 0.28 Operation condition of CMS is quite different from that in CCM-WGFF key comparison. No linkage to KCRV was provided. Slope of the regression line at 35 ℃ is positive but small, maybe due to measurement error. 2018/11/18

Schedule Progress Organization Date Comparison test CMS, VMI Jun. to Dec., 2009 Viscosity effect test NMIJ Feb. to Mar., 2010 Draft A v.1 CMS Aug. 2010 Progress reported to APMP TCFF Nov. 2010 Draft A v.2 Aug. 2011 Draft A Reviewed by TCFF Chair VMI Sep. 2011 Draft B Nov. 2011 Draft B Submitted to WGFF Chair Dec. 2011 Draft B revision Jan. 2012 Draft approved by and submitted to BIPM Mar. 2012 2018/11/18

Final Report Status: approved for equivalence “Final report on APMP.M.FF-K2 bilateral comparison: Hydrocarbon liquid flow” published 2012 Metrologia, Volume 49, Technical Supplement 07004 Slope of the regression line at 35 ℃ is positive but small, maybe due to measurement error. 2018/11/18

Thank you for your attention! 2018/11/18