Comparison
Comparison close
Results

BIPM.L-K11, APMP.L-K11 and APMP.L-K11.1

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 633 nm (recommended frequency: 473 612 353 604 kHz)

No graph of equivalence is drawn up for these comparisons.

The graph of measurements is available from the page "Laboratory Individual Measurements"." .< FONT>

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 543 nm (recommended frequency: 551 579 908 725 kHz)

No graph of equivalence is drawn up.

Comparison
Comparison close
Results

BIPM.L-K11, APMP.L-K11 and APMP.L-K11.1

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 633 nm (recommended frequency: 473 612 353 604 kHz)

No degrees of equivalence are computed for these comparisons.

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 543 nm (recommended frequency: 551 579 908 725 kHz)

No degrees of equivalence are computed.

Comparison
Comparison close
BIPM comparison
Linked comparison
BIPM.L-K11
Metrology area, Sub-field Length, Laser Frequencies
Description Comparison of primary wavelength standards
Time of measurements 2004 - 2006
Status Approved for equivalence
Final Reports of the comparisons
Measurand Absolute frequency
Wavelengths: 633 nm and 543 nm

Comparison type Key Comparison
Consultative Committee CCL (Consultative Committee for Length )
Conducted by BIPM (Bureau International des Poids et Mesures)
Comments This comparison has been classified as superseded by the CCL and was placed in the KCDB archives on 6 January 2016.

Measurements in key comparison BIPM.L-K11 were organised as campaigns that take place at the BIPM twice a year, respectively designated as "CI-20xy" and "CII-20xy" for year 20xy:

CI-2004 status: Approved by the CCL
CII-2004 status: Approved by the CCL
CI-2005 status: Approved by the CCL
CII-2005 status: Approved by the CCL

CI-2006 status: Approved by the CCL
CII-2006 status: Approved by the CCL


Three other measurements took place at the BIPM (Standard NIM/L2 at 543 nm) in November 2005, at NMIJ (Standard NRLM-03 at 633 nm) in November 2004, and at UME (Standard UME-L3 at 633 nm) in June 2005. They are referred to as "Additional measurements" in the following.
In addition, a number of measurements have been taken in the framework of key comparison APMP.L-K11 held in NIM, China, in 2004.
First results published on 08 November 2005
New BIPM.L-K11 data and APMP.L-K11 data published on 17 August 2007
APMP.L-K11.1 data published on 10 January 2012
Pilot institute BIPM
Bureau International des Poids et Mesures
BIPM - International Organization
Contact person L. Robertsson

+33 (0) 1 45 07 70 53
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
BIPM

Bureau International des Poids et Mesures, BIPM - International Organization, N/A

CEM

Centro Español de Metrologia, Spain, EURAMET

DFM

Danish Fundamental Metrology Ltd, Denmark, EURAMET

EIM

Hellenic Institute of Metrology, Greece, EURAMET

INM

National Institute of Metrology, Romania, EURAMET

INRIM

Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET

IPQ

Instituto Portugues da Qualidade, Portugal, EURAMET

KRISS

Korea Research Institute of Standards and Science, Korea, Republic of, APMP

LNE-INM

Conservatoire national des arts et métiers / Institut National de Métrologie, France, EURAMET

NIM

National Institute of Metrology, China, APMP

NIS

National Institute for Standards, Egypt, AFRIMETS

NMIJ AIST

National Metrology Institute of Japan, Japan, APMP

NMISA

National Metrology Institute of South Africa, South Africa, AFRIMETS

NML-SIRIM

National Metrology Laboratory, SIRIM Berhad (became NMIM), Malaysia, APMP

NMi-VSL

Nederlands Meetinstituut - Van Swinden Laboratorium (became VSL in 2009), Netherlands, EURAMET

NPLI

CSIR National Physical Laboratory of India, India, APMP

SMU

Slovensky Metrologicky Ustav, Slovakia, EURAMET

SP

Technical Research Institute of Sweden from 2017 Research Institutes of Sweden AB, Sweden, EURAMET

UME

TÜBITAK Ulusal Metroloji Enstitüsü, Turkey, EURAMET

VNIIM

D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET

Comparison
Comparison close
Results

BIPM.L-K11, APMP.L-K11 and APMP.L-K11.1

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 633 nm (recommended frequency: 473 612 353 604 kHz)

No key comparison reference value is computed.

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 543 nm (recommended frequency: 551 579 908 725 kHz)

No key comparison reference value is computed.

Comparison
Comparison close
Results

BIPM.L-K11, APMP.L-K11 and APMP.L-K11.1

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 633 nm (recommended frequency: 473 612 353 604 kHz)

dfi : absolute frequency measured for Standard i, shifted by f0 = 473 612 353 000 kHz, dfi = fi - f0
ui1 : standard uncertainty stemming from the measurement of Standard i
u
i2
: estimated uncertainty propagated from the uncertainty in the values of the working parameters for Standard i
uic : root-sum-square of ui1 and ui2, given at a confidence level of 68 % assuming a large number of degrees of freedom

 Laboratory  Standard i dfi
/ kHz

ui1
/ kHz

ui2
/ kHz
uic
/ kHz
 NIS

NIS-165

603.8

0.16

1.7

1.7
 IPQ

IPQ2

602.7

0.91

2.0

2.2
 VNIIM

VNIIM2

603.6

0.13

0.8

0.8
 NMISA

CSIR-04

599.0

0.14

3.3

3.3
 NIM

NIM-D1

595.1

0.09

1.9

1.9
 LNE-INM

INM9

602.3

0.04

1.6

1.6
 NMi-VSL

NMi-5

597.6

0.22

2.3

2.3
 SP

SP2

602.9

0.73

6.8

6.8
 DFM

DK1

607.2*

0.28

2.1

2.1
 EIM

EIM-1

610.7

0.26

2.0

2.0
 INM(RO)

INM PHT/HE/97

612.7

0.18

4.1

4.1
 SMU

SMU-1

606.9

0.20

2.4

2.4
 NMIJ NRLM-03

607.2

0.70

5.3

5.3

 UME UME-L3

600.6

0.10

1.2

1.2

 NML-SIRIM NML-SIRIM-1

607.7

0.08

2.2

2.2

 CEM CEM2

609.1

0.09

2.0

2.0

 IPQ IPQ3

601.5

0.22

2.5

2.5

 NPLI NPL-I(1)

607.1

0.07

2.4

2.4

 INRIM INRIM 4/P

605.7

0.10

2.8

2.8

 LNE-INM INM 125

605.3

0.16

1.8

1.8

 KRISS KRISS-R061

609.2

0.18

1.5

1.5

 NIS NIS-165

602.6

0.14

2.0

2.0

 UME UME-L3

602.3

0.19

1.1

1.1

 NIM NIM-D1

595.5

0.7

1.9

2.0

 NMIJ NRLM-03

606.5

1.5

5.1

5.3

 NMISA CSIR-04

598.2

1.0

3.3

3.4

 NML-SIRIM NML-SIRIM-1

609.0

0.7

1.9

2.0

 SCL SCL-1

605.5

0.8

3.4

3.5

 NIMT NIMT-1

609.7

1.1

2.0

2.3

 NIM NIM-C4

606.7

1.6

2.1

2.6

 MSL MSL-1

604.5

0.7

2.1

2.2

 CMS/ITRI NML-4

608.9

1.3

1.9

2.3

 KRISS KRISS-R061

609.7

0.12

1.75

1.75

 VMI-STAMEQ VMI-V01-TB1.01

609.6

0.17

1.78

1.79

* value corrected for a known offset of -2.1 kHz
In green: lasers having been measured in APMP.L-K11
In pink: lasers having been measured in APMP.L-K11.1
This data is also available in Summary Results (PDF file presented under A4 printable format).

Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO-31-0 Annex B Rule B.


GRAPH OF MEASUREMENTS: dfi and uic, expressed in kHz

Click on the graph to have a closer view:


Full line: CCL recommended value dfR = 604 kHz
Dash lines: corresponding standard uncertainty uR = 10 kHz

MEASURAND : Absolute frequency of the reference component of the corresponding recommended radiation for the practical realization of the definition of the metre

WAVELENGTH: 543 nm (recommended frequency: 551 579 908 725 kHz, with standard uncertainty 25 kHz)

dfi : absolute frequency measured for Standard i, shifted by f0 = 551 579 908 725 kHz, dfi = fi - f0
ui1 : standard uncertainty stemming from the measurement of Standard i
u
i2
: estimated uncertainty propagated from the uncertainty in the values of the working parameters for Standard i
uic : root-sum-square of ui1 and ui2, given at a confidence level of 68 % assuming a large number of degrees of freedom

 Laboratory  Standard i dfi
/ kHz

ui1
/ kHz

ui2
/ kHz
uic
/ kHz
 NIM

 NIM/L2

-49.0

1.2

46

46


Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO-31-0 Annex B Rule B.

No graph is given here since only one result is available.