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 | 2011 - 2013 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | Luminous intensity, 100 cd 100 cd |
| Transfer device | Lamps for luminous intensity of the SIS 40-100 type |
| Comparison type | Key Comparison |
| Consultative Committee | CCPR (Consultative Committee for Photometry and Radiometry) |
| Conducted by | COOMET (Euro-Asian Cooperation of National Metrological Institutions) |
| RMO Internal Identifier | COOMET 368/BY/06 |
| Comments | Results published on 22 June 2020. |
| Pilot institute |
BelGIM
Belarussian State Institute for Metrology Belarus |
| Contact person | Olga Tarasova +375 017 365 50 61 |
| Additional |
| Pilot laboratory | |
|---|---|
| BelGIM |
Belarussian State Institute for Metrology, Belarus, COOMET |
| KazStandard |
Kazakhstan Institute of Standardization and Metrology, Kazakhstan, COOMET |
| NSC IM |
National Scientific Centre "Institute of Metrology", Ukraine, EURAMET |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| VNIIOFI |
All-Russian Scientific Institute for Optical and Physical Measurements, Rosstandart, Russian Federation, COOMET |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
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.
