What’s new at NMIJ
Transcript of What’s new at NMIJ
What’s new at NMIJ
National Metrology Institute of Japan
Yoshiya Terao
APMP/TCFF meeting
on November 2-3, 2015 at Beijing, China
Research Institutes of NMIJ
Research Institutes of NMIJ conduct research and development
towards the establishment of primary standards, and dissemination
of the measurement standards to societies and industries in
cooperation with the Center for Quality Management of
Metrology.
• Research Institute for Engineering Measurement
• Research Institute for Physical Measurement
• Research Institute for Material and Chemical Measurement
• Research Institute for Measurement and Analytical
Instrumentation 2
Reorganization
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Research Groups in RIEM
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Length Standards Group Research development and supply of length-related standards such as length standards,
range finders, deviation amount, etc.
Dimensional Standards Group Research development and supply of dimensional standards centered on coordinate
measuring technologies
Nanoscale Standards Group Research development and supply of length standards in nanometer size
Mass Standards Group Reseach development and supply of mass standards, research development of next-
generation mass standards
Fluid Property Standards Group Research development of density, viscosity, liquid refractive index and physical properties
of fluids
Force and Torque Standards Group Research development and supply of force and torque standards
Pressure and Vacuum Standards Group Research development and supply of pressure and leak standards
Vibration and Hardness Standards Group Research development and supply of vibration and hardness standards
Liquid Flow Standards Group Research development and supply of liquid flow and flow velocity standards
Gas Flow Standards Group Research development and supply of gas flow and flow velocity standards
Type Approval Group Type Approval for specified measuring instruments based on test data and documents
Testing and Inspection Group Inspection of verification standards and Type Approval for specified measuring instruments
except for weighing instruments and flow meters
Legal Weighing Metrology Group Conformity assessment tests necessary for inspections of verification standard and Type
Approval of mass-related specified measuring instruments
Legal Flow Metrology Group Tests necessary for inspections of verification standard and Type Approval of volume and
flow-related specified measuring instruments
Updating our CMC table
#1 Extension of water flow calibration service
Old: 0.005 m3/h to 3000 m3/h New: 0.002 m3/h (2 L/h) to 12 000 m3/h
#2 Extension of hydrocarbon flow calibration service
Old: 3 m3/h to 300 m3/h New: 0.001 m3/h (1 L/h) to 300 m3/h
January 21 to 23, 2014 Peer-reviewed by Dr. Chun-Min Su (CMS)
June 25, 2014 Submitted to APMP/TCFF Chair
October 13, 2014 Submitted to Inter-RMO review (APMP.M.38)
February 23, 2015 Approved and published at KCDB Appendix C
Seven
months
New calibration services
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#1 High air speed: 40 m/s to 90 m/s
#2 Small hydrocarbon flow: 0.02 L/h to 1 L/h
Air speed calibration services
Air speed ranges
0.05 m/s to 1.5 m/s : Tow carriage
1.3 m/s to 40 m/s : LDA calibrator and wind tunnel
40 m/s to 90 m/s : New high speed wind tunnel
Traceable to air flowrate
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New wind tunnel
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Eiffel type, Circular open test section (dia.100 mm),
Air speed: 40 m/s to 90 m/s
DUT: Small size Pitot tube
Contraction Nozzle
(Flow rate to air speed)
high speed (~100 m/s)
wind tunnel (100 mmf)
A Pitot tube under calibration
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Weighing section
(liquid collection)
Test section
(DUT mounting) Flow generation section
(tank, pump)
100g weighing system
(liquid collection for
0.02~1 L/h)
2kg weighing system
(liquid collection for 1~100 L/h)
Test meterWeighing
vessel
Weighing
scale, ms
Bypass to
storage tankMeasurement point of temperature, Ttm
and pressure, ptm
Pulse counter,
Number of pulses, Ip
Pulse signal
DUTTest meterWeighing
vessel
Weighing
scale, ms
Bypass to
storage tankMeasurement point of temperature, Ttm
and pressure, ptm
Pulse counter,
Number of pulses, Ip
Pulse signal
DUT
Calibration method ・ Gravimetric (static weighing)
・ Standing-start-and-finish
thermostatic chamber
(for better stability of
liquid temperature
controllable at any value
between 15℃~35℃)
Small hydrocarbon flow facility
New calibration services
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#1 High air speed: 40 m/s to 100 m/s
#2 Small hydrocarbon flow: 0.02 L/h to 1 L/h
To be peer-reviewed and published
at KCDB Appendix C in 2017
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Flow Calibration Services at NMIJ
Facility DUT and Calibration Range Uncertainty
(k = 2)
Gas Flow
(Small)
Constant Volume Tank
(PVTt Method) Flowmeters
0.01 mg/min to 5 g/min (Dry air, N2, He, Ar) 0.42%
Weighing Tank
Sonic Nozzles and Flowmeters
5 mg/min to 400 g/min
(Dry air, N2, He, Ar, H2, CH4)
0.05 %
to
0.46%
Sonic Nozzles
Sonic Nozzles and Flowmeters
5 mg/min to 400 g/min
(Dry air, N2, He, Ar, H2, CH4)
0.07%
to
0.75 %
Gas Flow
(Medium)
Constant Volume Tank
(PVTt Method)
Sonic Nozzles 0.17%
5 to 200 m3/h (Dry Air)
Gas Flow
(Medium) Closed Loop System
Flowmeters
5 to 1000 m3/h (Dry Air) at 0.1 to 0.5 Mpa 0.28%
Gas Flow
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Flow Calibration Services at NMIJ
Size Facility Calibration Range Uncertainty (k
= 2)
Small 10 kg Weighing Tank 0.002 m3/h to 1.2 m3/h 0.039 %
Large and
Medium
500 kg, 5 t and 50 t Weighing
Tanks with Constant Head Tank 0.3 m3/h to 3000 m3/h
0.042 % to
0.060 %
Super-
Large
Reference meters
Ball prover
750 m3/h to 12 000 m3/h
at 70 C 0.081 %
Water Flow
Facility Calibration Range Uncertainty
(k = 2)
Small 2 kg and 100 g Weighing Tanks 20 mL/h to 0.1 m3/h 0.02 to 0.05% (mass)
0.06 to 0.08%(volume)
Middle* 32 kg Weighing Tank 0.1 m3/h to 15 m3/h 0.02 % (mass)
0.03%(volume) Large 10 t and 1t Weighing Tanks 3 to 300 m3/h
Hydrocarbon Flow (Kerosene and Light oil)
* Spindle oil is also available for “Middle” flow range
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Flow Calibration Services at NMIJ
Facility DUT and Calibration Range Uncertainty
(k = 2)
Low Speed Tow Carriage Anemometers
0.05 m/s to 1.5 m/s
7 mm/s
to 9 mm/s
Medium Speed LDV Calibrator LDV
1.3 m/s to 40 m/s
0.07 %
to 0.5%
Medium Speed Wind Tunnel Anemometers
1.3 m/s to 40 m/s
0.29 %
to 0.67 %
High Speed Wind Tunnel Pitot tube
40 m/s to 90 m/s 1.6 %
Air Speed
Recent publications and presentations
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Research papers •Friction factor and mean velocity profile for pipe flow in high Reynolds number, N.
Furuichi, Y. Terao, Y. Wada, and Y. Tsuji, Physics of Fluids, Vol. 27-9, Sep. 2015
•Discharge coefficient equation for critical-flow toroidal-throat venturi nozzles covering the
boundary-layer transition regime, M. Ishibashi, Flow Measurement and
Instrumentation, Vol. 44, 2015
•Static pressure measurement error at a wall tap of a flow nozzle for a wide range of
Reynolds number, N. Furuichi and Y. Terao, Flow Measurement and Instrumentation,
Vol. 46, 2015
Oral and poster presentations •Development of prototype low-flow rate test rig applicable for highly volatile liquids, R.
Doihara, T. Shimada, K-H. Cheong and Y. Terao, ISFFM2015
•Investigation into Flow Rate Dependency of Small Volume Prover for Hydrocarbon
Flowmeters, T. Shimada, R-Doihara and Y. Terao, ISFFM2015
• Bi-Comparison for High Temperature Water Flow between PTB and NMIJ, N. Furuichi,
Y. Terao, C. Leopodo and L. Tohmas, ISFFM2015
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Oral and poster presentations (continued) •Influence of Non-developed Flow Condition on Uncertainty of Flowrate Measurement
using Ultrasonic Doppler Velocity Profile Method, S. Wada and N. Furuich, ISFFM2015
•An influence of obstacle plate for uncertainty of flowrate measurement using ultrasonic
Doppler method, N. Furuichi, ISUD9, August 2014
•Experimental results of flow nozzle based on PTC6 for high Reynolds number, N.
Furuichi, K-H. Cheong et. al., Power Conference 2014, July 2014
•Development of high accurate flow nozzle for feedwater flowrate measurement in
nuclear power plant, N. Furuichi, K-H. Cheong et. al., ICONE22, July 2014
Recent publications and presentations
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Thank you for your attention.