CCPR-K3.a, EURAMET.PR-K3.a, EURAMET.PR-K3.a.1, COOMET.PR-K3.a and APMP.PR-K3.a
MEASURAND Luminous intensity
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in 10-2.
Enlarged graph
CCPR-K3.a, EURAMET.PR-K3.a, EURAMET.PR-K3.a.1, COOMET.PR-K3.a and APMP.PR-K3.a
MEASURAND Luminous intensity
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in 10-2.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
10-2 |
10-2 |
10-2 |
||
| LNE-INM/Cnam | 0.89 | 0.60 | ||
| NMISA | 0.51 | 0.88 | ||
| NMIA | -0.07 | 0.60 | ||
| NMIJ | -0.09 | 0.56 | ||
| INRIM | -0.43 | 0.90 | ||
| IO-CSIC | -0.48 | 0.72 | ||
| NIM | -0.16 | 0.48 | ||
| NIST | 0.12 | 0.48 | ||
| NPL | 0.04 | 0.30 | ||
| NRC | 0.19 | 1.06 | ||
| METAS | -0.50 | 1.12 | ||
| MKEH | 0.05 | 0.94 | ||
| PTB | -0.31 | 0.40 | ||
| SMU | -0.36 | 1.40 | ||
| VNIIOFI | 0.33 | 0.92 | ||
| INTI | -0.25 | 0.74 | ||
| BIPM | 0.30 | 1.00 | ||
| NMC, A*STAR | 0.03 | 0.33 | ||
| BIM | 0.04 | 1.50 | ||
| BelGIM | -0.53 | 0.72 | ||
| SP | -0.61 | 0.93 | ||
| UME | 0.43 | 1.50 | ||
| BEV | -0.26 | 1.10 | ||
| VSL | -0.54 | 0.64 | ||
| CMI | -0.10 | 0.80 | ||
| IPQ | 0.57 | 1.60 | ||
| DMDM | 0.22 | 1.20 | ||
| GUM | 0.33 | 1.10 | ||
| INM | -0.21 | 1.40 | ||
| SMU | 0.42 | 0.72 | ||
| MIKES | -0.32 | 0.44 | ||
| INM | -0.72 | 0.90 | ||
| BelGIM | -0.57 | 0.94 | ||
| NSC IM | -0.66 | 1.28 | ||
| KazStandard | -0.22 | 0.94 | ||
| CMS | 1.93 | 0.86 | ||
| SCL | -0.48 | 1.30 | ||
| SNSU-BSN | -2.11 | 1.10 | ||
| NPLI | -0.61 | 0.88 | ||
| NMIM | -0.73 | 1.10 | ||
| MSL | -0.08 | 0.59 | ||
| NIMT | 0.61 | 0.87 | ||
| NMC, A*STAR | -0.09 | 0.71 | ||
| VMI | 0.28 | 1.00 | ||
| NMISA | -1.28 | 1.60 | ||
| NIS | -1.25 | 2.20 |
| Metrology area, Sub-field | Photometry and Radiometry, Photometry |
| Description | Luminous intensity |
| Time of measurements | 1997 - 1998 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Luminous intensity |
| Transfer device | Lamps |
| Comparison type | Key Comparison |
| Consultative Committee | CCPR (Consultative Committee for Photometry and Radiometry) |
| Conducted by | CCPR (Consultative Committee for Photometry and Radiometry) |
| Comments | Results published on 5 July 2001. |
| Pilot institute |
PTB
Physikalisch-Technische Bundesanstalt Germany |
| Contact person | G. Sauter +49 (0) 531 592 4120 |
| Pilot laboratory | |
|---|---|
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| BNM-INM |
Bureau National de Métrologie - Institut National de Métrologie, France, EURAMET |
| CSIR-NML |
Council for Scientific and Industrial Research, National Metrology Laboratory (became NMISA in 2007), South Africa, AFRIMETS |
| CSIRO-NML |
Commonwealth Scientific and Industrial Research Organization - National Measurement Laboratory; became National Measurement Institute, Australia, NMIA in 2004, Australia, APMP |
| IEN |
Istituto Elettrotecnico Nazionale Galileo Ferraris; from 1st January 2006: Istituto Nazionale di Ricerca Metrologica, INRIM, Italy, EURAMET |
| IFA-CSIC |
Instituto de Fisica Aplicada - Consejo Superior de Investigaciones Cientificas, now IO-CSIC, Instituto de Optica Daza de Valdés, Spain, EURAMET |
| INTI |
Instituto Nacional de Tecnologia Industrial, Argentina, SIM |
| METAS |
Federal Institute of Metrology, Switzerland, EURAMET |
| NIM |
National Institute of Metrology, China, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| NRC |
National Research Council, Canada, SIM |
| OMH |
Országos Mérésügyi Hivatal; Subsequently MKEH, now BKFH, Hungary, EURAMET |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| VNIIOFI |
All-Russian Scientific Institute for Optical and Physical Measurements, Rosstandart, Russian Federation, COOMET |
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CCPR-K3.a, EURAMET.PR-K3.a, EURAMET.PR-K3.a.1, COOMET.PR-K3.a and APMP.PR-K3.a
MEASURAND Luminous intensity
The individual measurements, xi, of the participating laboratories take the form of ratios which depend on the reference used at the pilot laboratory. This is cancelled out by normalization using the key comparison reference value, xR. This procedure leads to normalized individual measurements: xi / xR.
CCPR-K3.a
The key comparison reference value, xR, is calculated as the weighted average of the invidual results xi, weighted by the inverse square of the individual standard uncertainties, ui, with the application of a minimum cutoff of 0.25%. The INTI and the BIPM are excluded from the calculation of xR. The standard uncertainty of xR is uR = 0.09 %. It is negligible compared to the ui values.
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: Di = (xi - xR) / xR and Ui, its expanded uncertainty
(k = 2), both expressed in relative units. Ui = 2ui.
Linking CCPR-K3.a.1 to CCPR-K3.a
The link to the key comparison CCPR-K3.a is made though CSIRO-NML (now NMIA) that participated in both comparisons, see Section 9 of the CCPR-K3.a.1 Final Report.
Linking EURAMET.PR-K3.a to CCPR-K3.a
The link to the key comparison CCPR-K3.a is realized through the common participation of LNE-INM/Cnam, INRiM (named "BNM-INM" and "IEN" at the time of the CCPR key comparison) and PTB that participated in both comparisons, see EURAMET.PR-K3.a Final Report.
Linking EURAMET.PR-K3.a.1 to CCPR-K3.a
The link to the key comparison CCPR-K3.a is realized through the common participation of LNE see EURAMET.PR-K3.a.1 Final Report.
Linking COOMET.PR-K3.a to CCPR-K3.a
The link to the key comparison CCPR-K3.a is realized through the common participation of SMU and VNIIOFI, see COOMET.PR-K3.a Final Report.
Linking APMP.PR-K3.a to CCPR-K3.a
The link to the key comparison CCPR-K3.a is realised through the common participation of NMIJ and NIM, see Section 7 of the APMP.PR-K3.a Final Report.
CCPR-K3.a, EURAMET.PR-K3.a, EURAMET.PR-K3.a.1, COOMET.PR-K3.a and APMP.PR-K3.a
MEASURAND Luminous intensity
For individual measurements see the Final Reports.
