CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 1 kHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle
: participant in CCEM-K11.1 only
Brown squares: participants in EUROMET.EM-K11

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 20 kHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle
: participant in CCEM-K11.1 only
Brown squares: participants in EUROMET.EM-K11

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 100 kHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle
: participant in CCEM-K11.1 only
Brown squares: participants in EUROMET.EM-K11

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 1 MHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle
: participant in CCEM-K11.1 only
Brown squares: participants in EUROMET.EM-K11

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 kHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle: participant in CCEM-K11.1 only
Blue circles: participants in SIM.EM-K11 only
Brown squares: participants in EUROMET.EM-K11 only

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 20 kHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle: participant in CCEM-K11.1 only
Blue circles: participants in SIM.EM-K11 only
Brown squares: participants in EUROMET.EM-K11 only

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 100 kHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle: participant in CCEM-K11.1 only
Blue circles: participants in SIM.EM-K11 only
Brown squares: participants in EUROMET.EM-K11 only

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 MHz

Degrees of equivalence: Di and expanded uncertainty Ui (k = 2), both expressed in µV/V

Red diamonds: participants in CCEM-K11
Green triangle: participant in CCEM-K11.1 only
Blue circles: participants in SIM.EM-K11 only
Brown squares: participants in EUROMET.EM-K11 only

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 1 kHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB-640
NPL-429
VSL-939
NMIA011
INTI1325
NRC835
A*STAR-133
NIM-4178
SP-220
NIST638
JV531
INRIM-1726
BEV638
MKEH126
IPQ261
CEM-545
MIRS/SIQ/Metrology074
MIKES1333
Trescal-1646
LNE223
METAS-3038
UME551
NMISA-662
CMI258
EIM488
NPLI-726
VNIIM229

Green: participant in CCEM-K11.1 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE : 10 mV
FREQUENCY : 20 kHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB-1341
NPL-429
VSL-739
NMIA214
INTI1128
NRC231
A*STAR-236
NIM-2878
SP-121
NIST2540
JV1132
INRIM-1825
BEV038
MKEH-326
IPQ-660
CEM-445
MIRS/SIQ/Metrology-1273
MIKES832
Trescal-2646
LNE626
METAS-4237
UME751
NMISA1760
CMI162
EIM-383
NPLI-825
VNIIM2030

Green: participant in CCEM-K11.1 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE : 10 mV
FREQUENCY : 100 kHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB-943
NPL440
VSL-548
NMIA739
INTI1344
NRC759
A*STAR-942
NIM195
SP-330
NIST-353
JV1973
INRIM-3245
BEV-346
MKEH-937
IPQ-1071
CEM-265
MIRS/SIQ/Metrology-10123
MIKES-145
Trescal-3267
LNE-533
METAS-4458
UME-1960
NMISA2139
CMI184
EIM3990
NPLI-2230
VNIIM6269

Green: participant in CCEM-K11.1 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE : 10 mV
FREQUENCY : 1 MHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB-44100
NPL-46281
VSL26298
NMIA3102
INTI-29105
NRC4284
A*STAR-42369
NIM138184
SP-2494
NIST19151
JV8269
INRIM-141142
BEV-49148
MKEH-172233
IPQ79287
CEM2168
MIRS/SIQ/Metrology31754
MIKES-38147
Trescal-126207
LNE--
METAS-151129
UME-51132
NMISA-579758
CMI40243
EIM126190
NPLI-283
VNIIM53178

Green: participant in CCEM-K11.1 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 kHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB0.32.5
NPL-5.18.9
VSL-1.77.9
NMIA-0.15.7
INTI-0.19.9
NRC0.74.8
A*STAR-3.318.0
NIM3.713.9
SP0.56.5
NIST-0.912.3
UTE5.218.1
INMETRO-0.812.8
CENAM-1.325.1
JV0.814.3
INRIM-10.010.0
BEV2.412.7
MKEH1.68.0
IPQ9.541.2
CEM3.410.8
MIRS/SIQ/Metrology4.430.3
MIKES1.46.2
Trescal-8.78.5
LNE2.67.5
METAS-11.113.3
UME1.113.6
NMISA6.918.0
CMI2.319.4
EIM1.65.6
NPLI-7.711.5
VNIIM1.410.4

Green: participant in CCEM-K11.1 only
Blue: participants in SIM.EM-K11 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 20 kHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB-0.34.3
NPL-3.28.7
VSL0.911.8
NMIA2.96.7
INTI0.99.8
NRC-0.25.6
A*STAR-4.223.9
NIM-3.215.8
SP0.36.5
NIST-2.812.7
UTE-1.118.2
INMETRO-1.112.5
CENAM-5.124.9
JV0.315.6
INRIM-8.410.4
BEV0.414.1
MKEH0.59.9
IPQ6.148.3
CEM-7.911.4
MIRS/SIQ/Metrology1.130.5
MIKES0.27.8
Trescal-9.09.1
LNE0.59.1
METAS-12.110.0
UME5.015.1
NMISA6.518.7
CMI3.421.7
EIM2.86.6
NPLI-1.812.2
VNIIM18.214.1

Green: participant in CCEM-K11.1 only
Blue: participants in SIM.EM-K11 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 100 kHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB-1.56.0
NPL-2.612.7
VSL-0.614.7
NMIA-1.115.8
INTI-0.220.8
NRC3.56.6
A*STAR-5.826.9
NIM8.129.9
SP-1.612.8
NIST2.723.1
UTE-2.538.0
INMETRO-2.517.8
CENAM1.126.0
JV1.928.7
INRIM-19.213.7
BEV-2.618.9
MKEH-5.318.7
IPQ6.661.5
CEM-11.431.1
MIRS/SIQ/Metrology-7.550.7
MIKES-2.710.2
Trescal-14.614.5
LNE-4.515.4
METAS-16.015.4
UME-8.718.0
NMISA9.935.8
CMI-4.230.1
EIM-4.99.4
NPLI-19.414.4
VNIIM66.634.0

Green: participant in CCEM-K11.1 only
Blue: participants in SIM.EM-K11 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 MHz

   
Lab iDiUi
 / (µV/V)/ (µV/V)
PTB-2850
NPL-1867
VSL-1101
NMIA1377
INTI-3062
NRC1332
A*STAR-688
NIM7299
SP763
NIST177
UTE-34111
INMETRO19105
CENAM057
JV11111
INRIM-5971
BEV-2976
MKEH-44155
IPQ-3792
CEM-4792
MIRS/SIQ/Metrology-56403
MIKES-3156
Trescal-5862
LNE--
METAS-5774
UME-2361
NMISA194193
CMI-5792
EIM-4050
NPLI10658
VNIIM229127

Green: participant in CCEM-K11.1 only
Blue: participants in SIM.EM-K11 only
Brown: participants in EUROMET.EM-K11 only

Results are presented under A4 printable format in Summary Results (PDF file).

Comparison
Comparison close
SIM.EM-K11
Metrology area, Sub-field Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer
Description AC/DC voltage transfer difference at low voltages
Time of measurements 2004
Status Approved for equivalence
Final Reports of the comparisons
Measurand AC/DC voltage transfer difference
Parameters Voltage: 100 mV
Frequency: 1 kHz, 20 kHz, 100 kHz and 1 MHz
Transfer device AC/DC tranfer standard Fluke 792A
Comparison type Key Comparison
Consultative Committee CCEM (Consultative Committee for Electricity and Magnetism)
Conducted by SIM (Inter-American Metrology System)
RMO Internal Identifier SIM 1.9.K11
Comments

Results published on 31 March 2009

EUROMET.EM-K11 results and SIM.EM-K11 results are linked to those of CCEM-K11 and CCEM-K11.1

AC/DC voltage transfer standards

Pilot institute CENAM
Centro Nacional de Metrologia
Mexico
Contact person S. Campos
scampos@cenam.mx
+52 442 211 0500 ext 3424
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
CENAM

Centro Nacional de Metrologia, Mexico, SIM

INMETRO

Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM

INTI

Instituto Nacional de Tecnologia Industrial, Argentina, SIM

NIST

National Institute of Standards and Technology, United States, SIM

NRC

National Research Council, Canada, SIM

UTE

Administración Nacional de Usinas y Transmisiones Eléctricas, Uruguay, SIM

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE : 10 mV
FREQUENCY : 1 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = 1.6 µV/V; 2uR = 9.2 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE : 10 mV
FREQUENCY : 20 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = 1.0 µV/V; 2uR = 10.4 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE : 10 mV
FREQUENCY : 100 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = 2.8 µV/V; 2uR = 15.8 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE : 10 mV
FREQUENCY : 1 MHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = 24 µV/V; 2uR = 49 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = -0.5 µV/V; 2uR = 2.3 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.

  • Linking key comparison SIM.EM-K11 to CCEM-K11

INTI and NRC provide the link between SIM.EM-K11 and CCEM-K11. The linkage process is described in section 11 of SIM.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in SIM.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui, its expanded uncertainty (k = 2).

Pair-wive degrees of equivalence inside SIM.EM-K11 are not computed.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 20 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = -0.3 µV/V; 2uR = 2.9 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.

  • Linking key comparison SIM.EM-K11 to CCEM-K11

INTI and NRC provide the link between SIM.EM-K11 and CCEM-K11. The linkage process is described in section 11 of SIM.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in SIM.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui, its expanded uncertainty (k = 2).

Pair-wive degrees of equivalence inside SIM.EM-K11 are not computed.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 100 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = 1.6 µV/V; 2uR = 4.5 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.

  • Linking key comparison SIM.EM-K11 to CCEM-K11

INTI and NRC provide the link between SIM.EM-K11 and CCEM-K11. The linkage process is described in section 11 of SIM.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in SIM.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui, its expanded uncertainty (k = 2).

Pair-wive degrees of equivalence inside SIM.EM-K11 are not computed.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 MHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

The key comparison reference value xR is calculated as the weighted mean of the results of all participants in CCEM-K11. The value of the mean of the seven results of SP is used for the computation of xR, see equations 10 and 11 of the Final Report. The standard uncertainty uR of xR is computed as explained in section 6.1.4 of the Final Report.

xR = -7 µV/V; 2uR = 27 µV/V

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms both expressed in µV/V:
Di = (xi - xR) and its expanded uncertainty Ui (k = 2). The equations for the computation of Ui are given in section 6.1.6 of the Final Report.

The degree of equivalence between two laboratories i and j is given by two terms both expressed in µV/V:
Dij = (xi - xj) and its expanded uncertainty Uij (k = 2). The equations for the computation of Uij are given in section 6.1.7 of the Final Report.

  • Linking key comparison SIM.EM-K11 to CCEM-K11

INTI and NRC provide the link between SIM.EM-K11 and CCEM-K11. The linkage process is described in section 11 of SIM.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in SIM.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui, its expanded uncertainty (k = 2).

Pair-wive degrees of equivalence inside SIM.EM-K11 are not computed.
  • Linking key comparison EUROMET.EM-K11 to CCEM-K11

The degrees of equivalence relative to the EUROMET.EM-K11 reference value are reported in Table 19 (page 30) and in Table 20 (page 33) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
SP, PTB and VSL then provide the link between EUROMET.EM-K11 and CCEM-K11. The linkage process is described in Sections 6.1.10, 6.1.11 and 6.1.12 of the EUROMET.EM-K11 Final Report.

The degree of equivalence of laboratory i participant in EUROMET.EM-K11 with respect to the CCEM-K11 key comparison reference value is given by a pair of terms both expressed in µV/V: Di and Ui its expanded uncertainty (k = 2).

Pair-wise degrees of equivalence inside EUROMET.EM-K11 are reported in Appendix 1 of the EUROMET.EM-K11 Final Report.

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 1 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 of the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)
ULab i
/ (µV/V)
Date of measurement
 SP

-0.7

22.2 Sep 01
 PTB -4.6 41.1 Oct 01
 NPL -2.1 30.2 Dec 01
 VSL -7.1 40.1 Jan 02
 SP -1.2 22.2 Jul 02
 NMIA 1.4 14.3 Aug 02
 INTI 14.3 26.2 Oct 02
 SP 0.9 22.2 Jan 03
 NRC 9.6 36.1 Feb 03
 SP 1.9 22.2 Jun 03
 A*STAR 0.2 34.1 Jul 03
 NIM -39.0 78.0 Aug 03
 SP 0.8 22.2 Oct 03
 SP

-0.7

22.2

Jun 04

 NIST

7.3

36.5

Aug 04

 SP

-0.9

22.2

Feb 05

 Laboratory participant in CCEM-K11.1
  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 20 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 of the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)

ULab i
/ (µV/V)

Date of measurement
 SP -0.7 22.8 Sep 01
 PTB -11.7 42.4 Oct 01
 NPL -2.8 30.5 Dec 01
 VSL -5.7 40.4 Jan 02
 SP -2.3 22.6 Jul 02
 NMIA 3.4 16.9 Aug 02
 INTI 12.4 29.5 Oct 02
 SP 1.3 22.6 Jan 03
 NRC 3.2 32.4 Feb 03
 SP 4.3 22.6 Jun 03
 A*STAR -0.7 37.4 Jul 03
 NIM -26.7 78.2 Aug 03
 SP -0.6 22.6 Oct 03
 SP

-0.8

22.7

Jun 04

 NIST

25.8

38.9

Aug 04

 SP

-1.1

22.8

Feb 05

 Laboratory participant in CCEM-K11.1

  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 100 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 of the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)
ULab i
/ (µV/V)
Date of measurement
 SP 1.7 33.3 Sep 01
 PTB -6.2 45.2 Oct 01
 NPL 6.4 42.2 Dec 01
 VSL -2.2 50.2 Jan 02
 SP 0.6 33.2 Jul 02
 NMIA 9.7 42.2 Aug 02
 INTI 15.5 46.2 Oct 02
 SP -2.1 33.3 Jan 03
 NRC 9.9 61.1 Feb 03
 SP -1.5 33.2 Jun 03
 A*STAR -6.6 44.2 Jul 03
 NIM 4.2 96.1 Aug 03
 SP -1.1 33.2 Oct 03
 SP

1.2

33.2

Jun 04

 NIST

0.3

50.6

Aug 04

 SP

1.1

33.3

Feb 05

 Laboratory participant in CCEM-K11.1

  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).

CCEM-K11, CCEM-K11.1 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 10 mV
FREQUENCY : 1 MHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 of the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)
ULab i
/ (µV/V)
Date of measurement
 SP

-4.4

100.7 Sep 01
 PTB -20.6 107.3 Oct 01
 NPL -21.9 283.6 Dec 01
 VSL 50.1 300.7 Jan 02
 SP 1.1 100.1 Jul 02
 NMIA 26.9 108.9 Aug 02
 INTI -5.0 111.8 Oct 02
 SP 2.5 101.8 Jan 03
 NRC 65.3 92.2 Feb 03
 SP -2.8 100.4 Jun 03
 A*STAR -18.3 370.7 Jul 03
 NIM 161.2 188.2 Aug 03
 SP 12.1 101.5 Oct 03
 SP

-6.8

100.5

Jun 04

 NIST

43.1

143.1

Aug 04

 SP

-1.8

101.3

Feb 05

 Laboratory participant in CCEM-K11.1

  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)
ULab i
/ (µV/V)
Date of measurement
 SP -0.3 6.7 Sep 01
 PTB -0.2 3.0 Oct 01
 NPL -5.6 9.1 Dec 01
 VSL -2.2 8.1 Jan 02
 SP 0.4 6.7 Jul 02
 NMIA -0.6 6.0 Aug 02
 INTI -0.6 10.0 Oct 02
 SP 0.6 6.7 Jan 03
 NRC 0.2 5.1 Feb 03
 SP -0.3 6.7 Jun 03
 A*STAR -3.8 18.0 Jul 03
 NIM 3.2 14.0 Aug 03
 SP -0.5 6.7 Oct 03
 SP

0.0

6.7

Jun 04

 NIST

-1.4

12.0

Aug 04

 SP

0.1

6.7

Feb 05

 Laboratory participant in CCEM-K11.1

  • Key comparison SIM.EM-K11

dLab i-SIM : result of measurement carried out by laboratory i participant in SIM.EM-K11
ULab i-SIM : expanded uncertainty (k = 2) of dLab i-SIM
uLab i-SIM : standard uncertainty (k = 1) of dLab i-SIM

 Lab i dLab i-SIM
/ (µV/V)
ULab i-SIM
/ (µV/V)

Date of measurement

 INTI

8.7

12.6

04 Mar to 16 Apr 04
 INMETRO 8.0 8.0 28 Jun to 28 July 04
 CENAM

7.5

23

26 to 30 Aug 04

 NRC

9.5

9.5

Sep to Oct 04

 Lab i dLab i-SIM
/ (µV/V)
uLab i-SIM
/ (µV/V)

Date of measurement

 UTE 14.0 7.5 18 May to 22 Jun 04
  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 20 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 of the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)
ULab i
/ (µV/V)
Date of measurement
 SP -0.2 6.9 Sep 01
 PTB -0.6 5.0 Oct 01
 NPL -3.5 9.1 Dec 01
 VSL 0.6 12.1 Jan 02
 SP 0.9 6.9 Jul 02
 NMIA 2.6 7.1 Aug 02
 INTI 0.6 10.1 Oct 02
 SP -0.4 6.9 Jan 03
 NRC -0.5 6.1 Feb 03
 SP -0.3 6.9 Jun 03
 A*STAR -4.5 24.0 Jul 03
 NIM -3.5 16.0 Aug 03
 SP -0.4 6.9 Oct 03
 SP

0.0

6.9

Jun 04

 NIST

-3.1

12.4

Aug 04

 SP

0.3

6.9

Feb 05

 Laboratory participant in CCEM-K11.1

  • Key comparison SIM.EM-K11

dLab i-SIM : result of measurement carried out by laboratory i participant in SIM.EM-K11
ULab i-SIM : expanded uncertainty (k = 2) of dLab i-SIM
uLab i-SIM : standard uncertainty (k = 1) of dLab i-SIM

 Lab i dLab i-SIM
/ (µV/V)
ULab i-SIM
/ (µV/V)

Date of measurement

 INTI

3.0

13

04 Mar to 16 Apr 04
 INMETRO -2.0 8.0 28 Jun to 28 July 04
 CENAM

-6.0

23

26 to 30 Aug 04

 NRC

-1.8

8.5

Sep to Oct 04

 Lab i dLab i-SIM
/ (µV/V)
uLab i-SIM
/ (µV/V)

Date of measurement

 UTE -2.0 7.7 18 May to 22 Jun 04
  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 100 kHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 of the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)
ULab i
/ (µV/V)
Date of measurement
 SP 0.2 13.1 Sep 01
 PTB 0.1 6.8 Oct 01
 NPL -1.0 13.1 Dec 01
 VSL 1.0 15.1 Jan 02
 SP 0.6 13.1 Jul 02
 NMIA 0.5 16.1 Aug 02
 INTI 1.4 21.1 Oct 02
 SP 0.1 13.2 Jan 03
 NRC 5.1 7.3 Feb 03
 SP -1.1 13.1 Jun 03
 A*STAR -4.2 27.1 Jul 03
 NIM 9.7 30.0 Aug 03
 SP -0.4 13.2 Oct 03
 SP

0.1

13.1

Jun 04

 NIST

4.3

22.7

Aug 04

 SP

0.6

13.2

Feb 05

 Laboratory participant in CCEM-K11.1

  • Key comparison SIM.EM-K11

dLab i-SIM : result of measurement carried out by laboratory i participant in SIM.EM-K11
ULab i-SIM : expanded uncertainty (k = 2) of dLab i-SIM
uLab i-SIM : standard uncertainty (k = 1) of dLab i-SIM

 Lab i dLab i-SIM
/ (µV/V)
ULab i-SIM
/ (µV/V)

Date of measurement

 INTI

19.0

25

04 Mar to 16 Apr 04
 INMETRO 18.0 13.0 28 Jun to 28 July 04
 CENAM

21.6

23

26 to 30 Aug 04

 NRC

24.1

10.3

Sep to Oct 04

 Lab i dLab i-SIM
/ (µV/V)
uLab i-SIM
/ (µV/V)

Date of measurement

 UTE 18.0 18 18 May to 22 Jun 04
  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).

CCEM-K11, CCEM-K11.1, SIM.EM-K11 and EUROMET.EM-K11

MEASURAND : AC/DC voltage transfer difference
NOMINAL VOLTAGE
: 100 mV
FREQUENCY : 1 MHz

  • Key comparisons CCEM-K11 and CCEM-K11.1

xi : measurement result of laboratory i corrected as explained in section 6 of the Final Report
ULab i : expanded uncertainty (k = 2) of xi

 Lab i xi
/ (µV/V)
ULab i
/ (µV/V)
Date of measurement
 SP 0.4 62.8 Sep 01
 PTB -35.4 50.6 Oct 01
 NPL -25.2 67.5 Dec 01
 VSL -8.0 101.3 Jan 02
 SP -6.4 62.2 Jul 02
 NMIA 5.6 77.7 Aug 02
 INTI -36.9 62.1 Oct 02
 SP 10.3 65.2 Jan 03
 NRC 6.4 32.9 Feb 03
 SP -1.2 62.5 Jun 03
 A*STAR -12.8 87.9 Jul 03
 NIM 64.8 99.4 Aug 03
 SP 1.1 63.6 Oct 03
 SP

-8.0

62.8

Jun 04

 NIST

-6.4

71.8

Aug 04

 SP

3.9

64.1

Feb 05

 Laboratory participant in CCEM-K11.1

  • Key comparison SIM.EM-K11

dLab i-SIM : result of measurement carried out by laboratory i participant in SIM.EM-K11
ULab i-SIM : expanded uncertainty (k = 2) of dLab i-SIM
uLab i-SIM : standard uncertainty (k = 1) of dLab i-SIM

 Lab i dLab i-SIM
/ (µV/V)
ULab i-SIM
/ (µV/V)

Date of measurement

 INTI

14.0

75

04 Mar to 16 Apr 04
 INMETRO 79.0 98.0 28 Jun to 28 July 04
 CENAM

59.9

42

26 to 30 Aug 04

 NRC

75.0

23.0

Sep to Oct 04

 Lab i dLab i-SIM
/ (µV/V)
uLab i-SIM
/ (µV/V)

Date of measurement

 UTE 26 52 18 May to 22 Jun 04
  • Key comparison EUROMET.EM-K11

The values reported by the participants in EUROMET.EM-K11 are given in Table 9 (page 14) and Table 10 (page 18) of the EUROMET.EM-K11 Final Report for 100 mV and 10 mV, respectively.
Measurements were conducted between June 2005 and Aoril 2008.
The results after correction for the drift of the travelling standard are reported in Section 6.1.8 of the EUROMET.EM-K11 Final Report (page 22 to page 29).