CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) in µF/F
CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) in µF/F
CCEM-K4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) in µF/F
CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) in µF/F.
Results are presented in A4 format in Summary Results (PDF file).
CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) in µF/F.
Results are presented in A4 format in Summary Results (PDF file).
CCEM-K4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) in µF/F.
Results are presented in A4 format in Summary Results (PDF file).
| Metrology area, Sub-field | Electricity and Magnetism, Capacitance |
| Description | Comparison of 10 pF capacitance standards Optional: comparison of 100 pF capacitance standards |
| Time of measurements | 2025 - 2026 |
| Status | Measurements in progress |
| Measurand | Capacitance 10 pF Option: 100 pF |
| Transfer device | Two-terminal pair capacitance standards |
| Comparison type | Key Comparison |
| Consultative Committee | CCEM (Consultative Committee for Electricity and Magnetism) |
| Conducted by | EURAMET (European Association of National Metrology Institutes) |
| RMO Internal Identifier | EURAMET project number 1713 |
| Comments | In order to link the National Metrology Institutes organized in EURAMET to the key comparison CCEM-K4.2017, the EURAMET Technical Committee for Electricity and Magnetism decided to carry out a RMO key comparison EURAMET.EM-K4 of capacitance at 10 pF (and optional 100 pF), based on well characterized travelling standards. In this comparison, the value of a capacitance standard at a nominal value of 10 pF is derived by the participants from either the dc- or ac-quantum Hall resistance or a calculable Thompson-Lampard capacitor by means of a suitable chain of measuring bridges, or the value of a 10 pF capacitance standard traced to the BIPM’s dc quantum Hall resistance. Because the measuring chain usually includes several 10:1 ratio measurements, the comparison comprises a 100 pF capacitance standard as optional value to allow testing the 10:1 calibration of the participants. |
| Pilot institute |
PTB
Physikalisch-Technische Bundesanstalt Germany |
| Contact person | Stephan Bauer 00495315922620 |
| Pilot laboratory | |
|---|---|
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| AS METROSERT |
Central Office of Metrology, Estonia, EURAMET |
| BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |
| BIM |
Bulgarian Institute of Metrology, Bulgaria, EURAMET |
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| CEM |
Centro Español de Metrologia, Spain, EURAMET |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| GUM |
Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET |
| INRIM |
Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET |
| IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |
| LNE |
Laboratoire national de métrologie et d'essais, France, EURAMET |
| METAS |
Federal Institute of Metrology, Switzerland, EURAMET |
| MIKES |
VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus, Finland, EURAMET |
| MIRS/SIQ/Metrology |
MIRS/Slovenian Institute of Quality and Metrology/Metrology, Slovenia, EURAMET |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| NSAI NML |
NSAI National Metrology Laboratory, Ireland, EURAMET |
| RISE |
Research Institutes of Sweden AB, Sweden, EURAMET |
| SASO-NMCC |
National Measurement and Calibration Center - Saudi Standards, Metrology and Quality Organization, Saudi Arabia, GULFMET |
| Trescal |
Trescal Ltd, Denmark, EURAMET |
| UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |
| VSL |
VSL, Netherlands, EURAMET |
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" :
CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
|
The key comparison reference value KCRV10pF was calculated as the weighted mean of the relative differences Δi from the nominal capacitor value of the laboratories Labi. |
| The degree of equivalence of laboratory i with respect to the reference value is given by a pair of terms, both expressed in µF/F: Di = (Δi - KCRV10pF) and its expanded uncertainty Ui (k = 2) where Ui = 2 (u2(Δi) - u10pF2)1/2. |
CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
|
The key comparison reference value KCRV100pF was calculated as the weighted mean of the relative differences Δi from the nominal capacitor value of the laboratories Labi. |
| The degree of equivalence of laboratory i with respect to the reference value is given by a pair of terms, both expressed in µF/F: Di = (Δi - KCRV100pF) and its expanded uncertainty Ui (k = 2) where Ui = 2 (u2(Δi) - u100pF2)1/2. |
CCEM-K4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
|
The key comparison reference value KCRV10:1 was calculated as the weighted mean of the difference εi between the capacity ratio Labi and the BIPM. |
| The degree of equivalence of laboratory i with respect to the reference value is given by a pair of terms, both expressed in µF/F: Di = (εi - KCRV10:1) and its expanded uncertainty Ui (k = 2) where Ui = 2 (u2(εi) - u10:12)1/2. |
CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
The individual measurement results are presented in Section 10 of the CCEM-K4.2017 Final Report.
CCEM-K4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
The individual measurement results are presented in Section 10 of the CCEM-K4.2017 Final Report.
CCEM-K4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
The individual measurement results are presented in Section 13 of the CCEM-K4.2017 Final Report.
