1. Progress Report on APMP. M
Progress Report on APMP.M.FF-K2 Hydrocarbon Liquid Flow (bilateral comparison)
Chun-Min Su
CMS/ITRI, Chinese Taipei
Dec. 5, 2011 reported in APMP 2011 TCFF Meeting
Kobe, Japan

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

3. Transfer standard package
1- 4" 500 mm long
F- Cone type insert filter
2- 4" 300 mm long
3- Kral Meter 450 mm long
4- 4" 500 mm long
5- pick-up sensor (BEG43)
Direction of flow

4. Status of the two labs. CMS VMI Flow standard
Weighing scale (1.5, 6) ton
Volumetric tank (2000, 5000,10000) L
U95 (including
DUT)
0.049 %
0.088 %
Fluid
Solvent oil
Kerosene
Viscosity (cSt)
20 ℃
20 ℃
Temperature controlled
Yes No
(1000 m3 storage tank)
Actual test temperature (℃)
20 ± 0.3
35 ± 0.3
29.0 to 36.4

5. Schedule Progress NMI 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 report to
APMP TCFF
Nov. 2010
Draft A v.2
Aug. 2011
Draft A Review by
TCFF Chair
VMI
Sep. 2011
Draft B
Nov. 2011

6. Test results – K-factor

7. Test results – Strouhal No.
The TS lost its typical Re-dependent characteristic at Re < ~ when tested at VMI due to low oil viscosity and associated lower flow rate.

8. Viscosity effect test
Dependency of viscosity and temperature was not significant.

9. Comparison basis modified
Original
New Re
76 150
No. of Tests 6 2
Flowrate
(L/s)
CMS: 26
VMI: 7.5
CMS: 24 L/s
VMI: 12.5 L/s
Temperature
(℃)
CMS: 20
VMI: 33.7
CMS: 34.9
VMI: 29.3
Viscosity
(mm2/s)
CMS: 4.26
VMI: 1.24
CMS: 3.02
VMI: 1.31

10. Test results for comparison
VMI compared to CMS (at different temp., no correction applied)
Parameter: Strouhal Re=
NMI
Calibration Result
Strouhal no.
Expanded Uncertainty Ui
CMS
(34.76 ℃)
0.049 %
VMI
(29.30 ℃)
0.088 %

11. Comparison results En value
Degrees of Equivalence of VMI Relative to CMS
En value
[ %]
[0.10 %]

12. Concluding Remarks In this APMP.M.FF-K2 comparison
CMS tested the TS with solvent 20 ℃ and 35 ℃
(Comparison 34.9 ℃)
VMI tested the TS with 29.0 ℃ to 36.4 ℃ (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.

13. Thank you for your attention!