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Title: :Improvement of Global Measurement Standards:BIPM, NMIs


1
Mass and Related Quantities Progress Report
1999-2003
Improvement of Global Measurement
StandardsBIPM, NMIs Implementation of MRA in
the Mass . .NMIs, RMO-TC
Meeting Meeting 2002 Chairpersons Meeting
2000, 2003 Structure WG Hardness WG Fluid Flow
WG Gravimetry
Coord.Com. for WG Avogadro Constant Personnel
Chairpersons for WGM, WGF, WGD, WGHP,
WGMP, WGLP President
2
Measurement Standards for Mass Related
Quantities
s
m
mol
kg
Gravimetry, g
Molar Mass, NA
kg/mol
m/s2
Si
Pressure
Density
High
Solid
kg/(m?s2)Pa
kg/m3
Medium
Liquid
Lowvac.
m3
Volume
Force
Fluid Flow
kg?m/s2N
m3/s
Gas
Torque
N ? m
Water
kg/s
Oil
Hardness
m/s
Air Speed
Vickers
N/m2gtgtHV
Rockwell
Shore,
Balance Technology, Artifact, Material,
Dimension, Water, Steel, Silicon Crystal,
Air, ... Bulk Food, Petroleum
3
Improvement of Global Measurement Standards
?Mass Artifact (Cleaning, Atmosphere,
Magnetism) ?Density (Si, Water,Tri-decane,
Mercury,) ?Force (Load Cell, Torque) ?Pressure
(Piston GaugeDeformation,
Low-P operation., Manometry,
Silicon Vac. Gauge, Spinning Rotor
Sensor) ?Hardness (Ideal Procedure for Hardness
Testing.)
4
Avogadro Constant
Density, Lattice Spacing, Molar Mass,
Defect Redundancy NA 2-3x10-7, Discrepancy 5x
10-7 Lower by 1x 10-7 than
CODATA 1998. 28Si, 29Si, 30Si Natural Si?
Enriched Si Enrich 28Si to 99.99 ?NA, 5x10-8
Avogadro WG Avogadro Coord. Comm.
d
Si
D
m
M/NA
d
Micro. Density Macro. Density (M/NA ) /d3 r
m/D3 ? NA M/ (23/2 . r. d2203)
5
Recommended table for the density of water
between 0oC and 40oC based on recent
experimental reports
Application Density standard. Volumetry gtFluids,
Solids. Energy, Environment, Tax, Food, ..
. Discovery of Isotope SMOW, Pure Water
Technology, GUM rwater.V(sinker) M(mass)
M(hydrostatic)
Sinker
6
Implementation of MRA in the
Mass . .
1. Chairpersons Meeting Accelerate,Coordinate
WG-KC. 2. WGChoose KC, Assign Pilots, Coordinate
Pilots 3. PilotEstablish Protocol, Conduct KC,
Link to TCM,TCFF 4. Meeting ? Link to RMO-TC
Chairs.
Transfer
Standards Mass Standards, Si Sphere, Load Cell,
Piston Gauge, Spinning Rotor Gauge, Hardness Test
Piece, Indenters, Flow Meter, Sonic Nozzle, Si
Wafer, SiO2 Reference materials,Gravimeter,
Reference Liquid Security, Transportation
Cost, Time Limit gtgt Stability
7
CCM Comparions
A,E,C
Mass 0
K3
K1,4
K2
K5
10g
100kg
100g
1g
1kg
100mg
10kg
K1 on Si
Water
K3 on Steel
K2,E on Liquid
Density 10-7
K4 Hydrometer
998kg/m3
2.300kg/m3
8.000kg/m3
K4
Force 10-6
K3
K2
K1
10MN
100N
1kN
10kN
100kN
1MN
S
A
A
E
E
E
Pressure 10-6
K2aK6g
K8
K4aK5g
K1g
K3a
1MPa
1Pa
1mPa
1GPa
1kPa
1mPa
K1, Vickers 0.2, 1, 30
Hardness 10-3
Suppl. Rockwell, a,c, d
240HV
540HV
840HV
15N
30N
45N
K2
K3
K4
K6
K1
K5
Fluid Flow 10-4
HC-Liq. Flow
LoP-Gas Flow
HiP-Gas Flow
Water Flow
Air Speed
Liq. Volume
WG Recomm.
CODATA.
Avogadro Constant
Intl Comp.2001
Gravimetry
g9.8m/s2
NA6.02
8
Mass and Related
Quantities
CCM TCM, TCFF of RMO ?KC, CMC
CCM Other CCs ? Safety, Quality of Life

Quality x Quantity Systematics for
Global Measurement Standards
and their Dissemination
Mass Standard ? Atomic Standard
9
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