BIPM.EM-K13 and SIM.EM-K1
MEASURAND Resistance
NOMINAL VALUE 1 Ω
Degrees of equivalence represented by Di = (xI - xR) / 1, for which (xI - xR ) and 1 are expressed in Ω, and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in 10-8.
BIPM.EM-K13
MEASURAND Resistance
NOMINAL VALUE 10 kΩ
Degrees of equivalence represented by Di = (xI - xR) / 104, for which (xI - xR ) and 104 are expressed in Ω, and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in 10-8.
BIPM.EM-K13 and SIM.EM-K1
MEASURAND Resistance
BIPM.EM-K13 and SIM.EM-K1
NOMINAL VALUE 1 Ω
Degrees of equivalence represented by Di = (xI - xR) / 1, for which (xI - xR ) and 1 are expressed in Ω, and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in 10-8.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
10-8 |
10-8 |
10-8 |
||
| CEM (a) | -8.0 | 18 | ||
| JV | 2.7 | 12 | ||
| INPL | 18 | 30 | ||
| KRISS (a) | 3.1 | 8.4 | ||
| INM(RO) | 7.0 | 26 | ||
| NIST (a) | -1.4 | 4.2 | ||
| NMIA (b) | -13 | 23 | ||
| GUM (a) | -6.2 | 8.6 | ||
| BIM | -18 | 17 | ||
| NIMT | -7.1 | 19 | ||
| CMI (a) | 0.3 | 4.6 | ||
| SMD | -5.0 | 8.2 | ||
| NMISA | -12 | 12 | ||
| NIM (a) | 1.0 | 3.4 | ||
| NMC A*STAR (a) | -1.2 | 6.4 | ||
| EMI | -5.7 | 40 | ||
| NSAI NML | -8.1 | 9.0 | ||
| INMETRO (a) | 1.0 | 6.8 | ||
| NPLI | 37 | 87 | ||
| CEM | 5.6 | 10.6 | ||
| INRIM | -7.4 | 13.4 | ||
| INTI | -8.8 | 10 | ||
| UTE | 5.2 | 118 | ||
| NRC | -1.4 | 4.6 | ||
| CENAM | 17 | 19 |
BIPM.EM-K13
MEASURAND Resistance
NOMINAL VALUE 10 kΩ
Degrees of equivalence represented by Di = (xI - xR) / 104, for which (xI - xR ) and 104 are expressed in Ω, and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in 10-8.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
10-8 |
10-8 |
10-8 |
||
| CEM (a) | -2.0 | 4.0 | ||
| JV | 1.2 | 13.4 | ||
| INPL | -83 | 118 | ||
| EIM (a) | 7.3 | 7.0 | ||
| INM(RO) | -9.0 | 18 | ||
| GUM (a) | -3.7 | 6.8 | ||
| KRISS (a) | -0.1 | 3.2 | ||
| BIM | 0.6 | 30 | ||
| NIMT (a) | -31 | 74 | ||
| CMI (a) | -1.8 | 3.4 | ||
| SMD | 0.4 | 6.8 | ||
| NMISA | 52 | 60 | ||
| NIM (a) | -0.1 | 3.2 | ||
| NMC A*STAR (a) | 1.6 | 3.6 | ||
| EMI | 1.7 | 19 | ||
| NSAI NML | 6.9 | 42 | ||
| INMETRO (a) | 2.6 | 3.6 | ||
| NPLI | 31 | 17 | ||
| CEM | 2.0 | 6.8 | ||
| INRIM | -4.5 | 17.4 |
| Metrology area, Sub-field | Electricity and Magnetism, Resistance |
| Description | Resistance standards |
| Time of measurements | 1993 - |
| Status | Continuous, approved for equivalence |
| References | |
| Measurand | Resistance 1 Ω and 10 kΩ |
| Transfer device | Wirewound resistors |
| Comparison type | Key Comparison |
| Consultative Committee | CCEM (Consultative Committee for Electricity and Magnetism) |
| Conducted by | BIPM (Bureau International des Poids et Mesures) |
| Comments | From 22 September 2021, BIPM.EM-K13 covers the two former comparisons BIPM.EM-K13.a and BIPM.EM-K13.b. |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | Benjamin Rolland +33 01 45 07 62 81 |
| Pilot laboratory | |
|---|---|
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |
| 1993 |
| BIM |
Bulgarian Institute of Metrology, Bulgaria, EURAMET |
| 2013 |
| CEM |
Centro Español de Metrologia, Spain, EURAMET |
| 2022 | |
| 1996 |
BIPM Proc.-Verb. CIPM 1996 64 188 |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| 2015 | |
| 2008 | |
| 2000 | |
| 1998 |
| EIM |
Hellenic Institute of Metrology, Greece, EURAMET |
| 2003 |
| EMI |
Emirates Metrology Institute, United Arab Emirates, GULFMET |
| 2020 |
| GUM |
Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET |
| 2009 |
| INM |
National Institute of Metrology, Romania, EURAMET |
| 2006 |
| INMETRO |
Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM |
| 2020 |
| INPL |
National Physical Laboratory of Israel, Israel, N/A |
| 1998 |
| INRIM |
Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET |
| 2023 |
| IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |
| 1995 | |
| 1994 |
| JV |
Justervesenet, Norway, EURAMET |
| 1997 | |
| 1995 | |
| 1993 |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| 2010 to 2011 | |
| 2003 |
| NIM |
National Institute of Metrology, China, APMP |
| 2018 |
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| 2015 |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| 2007 |
| NMC, A*STAR |
National Metrology Centre, Agency for Science, Technology and Research, Singapore, APMP |
| 2018 |
| NMIA |
National Measurement Institute, Australia, Australia, APMP |
| 2008 |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| 2017 |
| NPLI |
CSIR National Physical Laboratory of India, India, APMP |
| 2022 |
|
| 2012 |
| NSAI NML |
NSAI National Metrology Laboratory, Ireland, EURAMET |
| 2021 | |
| 2020 | |
| 2018 | |
| 2014 to 2015 | |
| 2010 | |
| 2008 | |
| 2006 | |
| 2004 | |
| 2002 | |
| 2000 | |
| 1998 | |
| 1996 |
BIPM Proc.-Verb. CIPM 1996 64 188 |
| 1994 |
| SMD |
Service de la Métrologie Belge, Belgium, EURAMET |
| 2017 |
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" :
BIPM.EM-K13 and SIM.EM-K1
MEASURAND Resistance
NOMINAL VALUE 1 Ω
The key comparison reference value xR is the BIPM value. Its standard uncertainty is evaluated to be uR = 1.5x10-8 and is included in ui .
For laboratories that base their measurements on a calculable capacitor, the uncertainty associated with the use of RK-90, 1 × 10-7, needs to be included in the ui. This is a consequence of the use of the QHR reference at BIPM. Further details can be found here.
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: Di = xi and its expanded uncertainty (k = 2), Ui = 2ui, both expressed in 10-8.
The degree of equivalence between two laboratories i and j may be calculated, taking into account the correlation introduced by the BIPM measurements.
Linking SIM.EM-K1 to BIPM.EM-K13
The linkage of SIM.EM-K1 results to those of BIPM.EM-K13 is ensured by NIST who participated in both comparisons. The detailed calculation of the linkage is explained in Appendix G of the SIM.EM-K1 Final Report.
BIPM.EM-K13
MEASURAND Resistance
NOMINAL VALUE 10 kΩ
The key comparison reference value xR is the BIPM value. Its standard uncertainty is evaluated to be uR = 1.5x10-8 and is included in ui .
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: Di = xi and its expanded uncertainty (k = 2), Ui = 2ui, both expressed in 10-8.
The degree of equivalence between two laboratories i and j may be calculated, taking into account the correlation introduced by the BIPM measurements.
BIPM.EM-K13 and SIM.EM-K1
MEASURAND Resistance
NOMINAL VALUE 1 Ω
BIPM.EM-K13
xi : relative difference between the result of measurement of laboratory i and that of the BIPM
ui : combined standard uncertainty of xi
| Labi | xi / 10-8 |
ui / 10-8 |
measurement date | |
| (a) | CEM | -8.0 | 9.0 | 1996-06 |
| JV | 2.7 | 6.2 | 1997-06 | |
| NSAI NML | 3.0 | 20 | 1998-04 | |
| CMI | 11 | 10 | 1998-06 | |
| INPL | 18 | 15 | 1998-12 | |
| NSAI NML | -3.0 | 21 | 2000-04 | |
| NSAI NML | -7.0 | 23 | 2002-03 | |
| (a) | KRISS | 3.1 | 4.2 | 2003-06 |
| NSAI NML | -7.1 | 23 | 2004-04 | |
| NSAI NML | 0.0 | 19 | 2006-04 | |
| INM (RO) | 7.0 | 13 | 2006-04 | |
| (a) | NIST | -1.4 | 2.1 | 2007-08 |
| (a) | CMI | 4.0 | 3.1 | 2008-02 |
| NSAI NML | 4.2 | 5.4 | 2008-11 | |
| (b) | NMIA | -13 | 11 | 2008-11 |
| (a) | GUM | -6.2 | 4.3 | 2009-11 |
| NSAI NML | 10 | 5.7 | 2010-10 | |
| NPLI | 16 | 26 | 2012-09 | |
| BIM | -18 | 8.6 | 2013-04 | |
| NSAI NML | -6.7 | 8.1 | 2014-12 | |
| NIMT | -7.1 | 9.6 | 2015-05 | |
| (a) | CMI | 0.3 | 2.3 | 2015-10 |
| SMD | -5.3 | 4.0 | 2017-02 | |
| NMISA | -12 | 6.0 | 2017-12 | |
| NSAI NML | 2.6 | 8.6 | 2018-06 | |
| (a) | NIM | 1.0 | 1.7 | 2018-11 |
| (a) | NMC A*STAR | -1.2 | 3.2 | 2020-02 |
| EMI | -5.7 | 20 | 2020-05 | |
| (a) | INMETRO | 1.0 | 3.4 | 2021-06 |
| NSAI NML | -8.1 | 18 | 2021-08 | |
| NPLI | 36.0 | 43 | 2022-04 | |
| CEM | 5.6 | 5.3 | 2022-06 | |
| INRIM | -7.4 | 6.7 | 2022-12 |
(a) Institute using a quantum Hall resistance standard
(b) Measurements traceable to a calculable capacitor
BIPM.EM-K13
MEASURAND Resistance
NOMINAL VALUE 10 kΩ
xi : relative difference between the result of measurement of laboratory i and that of the BIPM
ui : combined standard uncertainty of xi
| Labi | xi / 10-8 |
ui / 10-8 |
measurement date | |
| (a) | CEM | -2.0 | 2.0 | 1996-06 |
| JV | 1.2 | 6.7 | 1997-06 | |
| NML(IE) | 23 | 75 | 1998-04 | |
| INPL | -83 | 59 | 1998-12 | |
| CMI | 12 | 20 | 2000-04 | |
| NML(IE) | -1.0 | 54 | 2000-05 | |
| NML(IE) | 0.7 | 59 | 2002-03 | |
| (a) | EIM | 7.3 | 3.5 | 2003-09 |
| NML(IE) | 2.8 | 59 | 2004-04 | |
| NML(IE) | 28 | 46 | 2006-04 | |
| INM(RO) | -9.0 | 9.0 | 2006-05 | |
| (a) | CMI | -2.8 | 3.5 | 2008-05 |
| NML(IE) | 3.9 | 30 | 2008-11 | |
| (a) | NIMT | 66 | 11 | 2009-04 |
| (a) | GUM | -3.7 | 3.4 | 2009-11 |
| NML(IE) | 0.0 | 30 | 2010-10 | |
| (a) | KRISS | -0.1 | 1.6 | 2011-03 |
| NPLI | 13 | 14 | 2012-09 | |
| BIM | 0.6 | 15 | 2013-04 | |
| NSAI NML | 1.6 | 21 | 2014-12 | |
| NIMT | -31 | 37 | 2015-05 | |
| (a) | CMI | -1.8 | 1.7 | 2015-10 |
| SMD | 0.2 | 3.4 | 2017-02 | |
| NMISA | 52 | 30 | 2017-12 | |
| NSAI NML | 6.6 | 21 | 2018-06 | |
| (a) | NIM | -0.1 | 1.6 | 2018-11 |
| (a) | NMC A*STAR | 1.6 | 1.8 | 2020-02 |
| EMI | 1.7 | 9.7 | 2021-05 | |
| (a) | INMETRO | 2.6 | 1.8 | 2021-06 |
| NSAI NML | 6.9 | 21 | 2021-08 | |
| NPLI | 30.6 | 8 | 2022-04 | |
| CEM | 2.0 | 3.4 | 2022-06 | |
| INRIM | -4.5 | 8.7 | 2022-12 |
(a) Institute using a quantum Hall resistance standard
