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

3

Research Groups in RIEM

4

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

6

#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.