CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (k = 2) in µF/F
CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (k = 2) in µF/F
CCEMK4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (k = 2) in µF/F
CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (k = 2) in µF/F.
Results are presented in A4 format in Summary Results (PDF file).
CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (k = 2) in µF/F.
Results are presented in A4 format in Summary Results (PDF file).
CCEMK4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (k = 2) in µF/F.
Results are presented in A4 format in Summary Results (PDF file).
Metrology area, Subfield  Electricity and Magnetism, Capacitance 
Description  Comparison of 10 pF capacitance standards Optional: comparison of 100 pF capacitance standards 
Time of measurements  2017 
Status  Approved for equivalence 
Final Reports of the comparisons  
References  
Measurand  Capacitance at 10 pF (optional capacitance at 100 pF) 
Parameters  Frequency at 1592 Hz (otptional frequency at 1233 Hz) / Voltage 100 V (10 V for optional 100 pF capacitance value) 
Transfer device  The scheme adopted is that of a collapsing star consisting in carrying out simultaneously a large number of bilateral comparisons piloted by the BIPM. The capacitance standards of each of the participant are compared using the BIPM capacitance standards as the common references. 
Comparison type  Key Comparison 
Consultative Committee  CCEM (Consultative Committee for Electricity and Magnetism) 
Conducted by  BIPM (Bureau International des Poids et Mesures) 
Comments  This comparison is a repeat of CCEMK4
Results published on 7 December 2018
Capacitance of nominal value 10 pF Capacitance of nominal value 100 pF Capacitance ratio at 100 pF : 10 pF

Pilot institute 
BIPM
Bureau International des Poids et Mesures BIPM  International Organization 
Contact person  P. Gournay +33 (0) 1 45 07 70 07 
Pilot laboratory  

BIPM 
Bureau International des Poids et Mesures, BIPM  International Organization, N/A 
LNE 
Laboratoire national de métrologie et d'essais, France, EURAMET 
METAS 
Federal Institute of Metrology, Switzerland, EURAMET 
NIM 
National Institute of Metrology, China, APMP 
NIST 
National Institute of Standards and Technology, United States, SIM 
NMIA 
National Measurement Institute, Australia, Australia, APMP 
NPL 
National Physical Laboratory, United Kingdom, EURAMET 
PTB 
PhysikalischTechnische Bundesanstalt, Germany, EURAMET 
VNIIM 
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET 
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CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
The key comparison reference value KCRV_{10pF} was calculated as the weighted mean of the relative differences Δ_{i} from the nominal capacitor value of the laboratories Lab_{i}. 
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: D_{i}_{ }= (Δ_{i}  KCRV_{10pF}) and its expanded uncertainty U_{i} (k = 2) where U_{i} = 2 (u^{2}(Δ_{i})  u_{10pF}^{2})^{1/2}. 
CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
The key comparison reference value KCRV_{100pF} was calculated as the weighted mean of the relative differences Δ_{i} from the nominal capacitor value of the laboratories Lab_{i}. 
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: D_{i}_{ }= (Δ_{i}  KCRV_{100pF}) and its expanded uncertainty U_{i} (k = 2) where U_{i} = 2 (u^{2}(Δ_{i})  u_{100pF}^{2})^{1/2}. 
CCEMK4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
The key comparison reference value KCRV_{10:1} was calculated as the weighted mean of the difference ε_{i} between the capacity ratio Lab_{i }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: D_{i}_{ }= (ε_{i}  KCRV_{10:1}) and its expanded uncertainty U_{i} (k = 2) where U_{i} = 2 (u^{2}(ε_{i})  u_{10:1}^{2})^{1/2}. 
CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 10 pF
FREQUENCY : ~ 1.6 kHz
The individual measurement results are presented in Section 10 of the CCEMK4.2017 Final Report.
CCEMK4.2017
MEASURAND : Capacitance
NOMINAL VALUE : 100 pF
FREQUENCY : ~ 1.6 kHz
The individual measurement results are presented in Section 10 of the CCEMK4.2017 Final Report.
CCEMK4.2017
MEASURAND : Capacitance ratio
NOMINAL VALUE : 100 pF : 10 pF
FREQUENCY : ~ 1.6 kHz
The individual measurement results are presented in Section 13 of the CCEMK4.2017 Final Report.