1. 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

2. 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=
New comparison point: Re=
Comparison parameter: Strouhal No.
(temperature-compensated)
Strouhal = K × D3
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3. Summary of the Comparison
CMS tested the TS with solvent 20 ℃ and 35 ℃ (Comparison 34.9 ℃)
VMI tested the TS with 29.0 ℃ to ℃ (Comparison 29.3 ℃)
NMIJ was invited to perform tests with kerosene and light 20 ℃ and 35 ℃
Comparison was made without viscosity correction
The En value of VMI at Re= 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.
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4. 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
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5. 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.
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6. Thank you for your attention!
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