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 | Comparison of 1 Ω and 10 kΩ resistance standards |
| Time of measurements | 2023 - 2024 |
| Status | Measurements in progress |
| References | |
| Measurand | DC Resistance 1 Ω and 10 kΩ |
| Transfer device | One 1 Ω and one 10 kΩ travelling standards provided by NIMT M are used for this comparison. The 1 Ω standard and the 10 kΩ standard were made by Measurement International (MI), 9331 series, with serial number 1103855 and serial number 1103602, respectively. |
| Comparison type | Key Comparison |
| Consultative Committee | CCEM (Consultative Committee for Electricity and Magnetism) |
| Conducted by | APMP (Asia Pacific Metrology Programme) |
| Pilot institute |
NIMT
National Institute of Metrology (Thailand) Thailand |
| Contact person | Natenapit Khumthukthit 6625775100 ext.1240 |
| Additional |
| Pilot laboratory | |
|---|---|
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| CMS |
ITRI Center for Measurement Standards, Chinese Taipei, APMP |
| EMI |
Emirates Metrology Institute, United Arab Emirates, GULFMET |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| MASM |
Mongolian Agency for Standardization and Metrology, Mongolia, APMP |
| MSL |
Measurement Standards Laboratory, New Zealand, APMP |
| NMC, A*STAR |
National Metrology Centre, Agency for Science, Technology and Research, Singapore, APMP |
| NMIA |
National Measurement Institute, Australia, Australia, APMP |
| NMIM |
National Metrology Institute of Malaysia, Malaysia, APMP |
| NMLPHIL |
National Metrology Laboratory of the Philippines, Philippines, APMP |
| SASO-NMCC |
National Measurement and Calibration Center - Saudi Standards, Metrology and Quality Organization, Saudi Arabia, GULFMET |
| SCL |
Standards and Calibration Laboratory, Hong Kong, China, APMP |
| SNSU-BSN |
National Measurement Standard - National Standardization Agency of Indonesia, Indonesia, APMP |
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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
