CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 1 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Blue circles: participants in SIM.EMK9 only
Orange squares : participants in APMP.EMK9
Brown square : participant in SIM.EMK9.1 only
CCEMK9, EUROMET.EMK9, SIM.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 10 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Blue circles: participants in SIM.EMK9 only
Orange squares : participants in APMP.EMK9
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 20 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Blue circles: participants in SIM.EMK9 only
Orange squares : participants in APMP.EMK9
Brown square : participant in SIM.EMK9.1 only
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 50 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Blue circles : participants in SIM.EMK9 only
Orange squares : participants in APMP.EMK9
Brown square : participant in SIM.EMK9.1
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 100 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Blue circles: participants in SIM.EMK9 only
Orange squares : participants in APMP.EMK9
Brown square : participant in SIM.EMK9.1 only
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 1 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Orange squares : participants in APMP.EMK9 only
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 10 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Orange squares : participants in APMP.EMK9 only
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 20 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Orange squares : participants in APMP.EMK9 only
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 50 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Orange squares : participants in APMP.EMK9 only
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 100 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Click on the graph for a closer view
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
Orange squares : participants in APMP.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 1 kHz
Degrees of equivalence: D_{i} = (x_{i}  x_{R}) and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 10 kHz
Degrees of equivalence: D_{i} = (x_{i}  x_{R}) and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 20 kHz
Degrees of equivalence: D_{i} = (x_{i}  x_{R}) and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 50 kHz
Degrees of equivalence: D_{i} = (x_{i}  x_{R}) and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 100 kHz
Degrees of equivalence: D_{i} = (x_{i}  x_{R}) and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red diamonds : participants in CCEMK9
Green triangles : participants in EUROMET.EMK9 only
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 1 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95% level of confidence, both expressed in µV/V
Dark blue :participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Blue : participants in SIM.EMK9 only
Orange : participants in APMP.EMK9
Brown : participant in SIM.EMK9.1 only
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 17 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  5.8  15.8 
AREPA  4.5  20.9 
NPL  0.5  12.7 
SP  2.5  8.6 
IEN  0.9  14.6 
CEM  6.5  35.9 
PTB  0.7  7.4 
NMiVSL  2.8  19.8 
INTI  4.7  13.8 
NMIA  0.8  10.7 
NRC  0.3  9.6 
VNIIM  0.8  20.1 
METAS  1.7  5.4 
NIST  7.2  16.8 
NIM  1.0  24.1 
BEV  0.5  18.4 
MIKES  0.1  10.6 
INETI  13.5  32.1 
OMH  0.8  43.1 
JV  1.3  22.3 
UME  0.7  30.3 
CMI  7.3  50.1 
Results are presented under A4 printable format in the Summary Results for 1000 V (PDF file).
CCEMK9, EUROMET.EMK9, SIM.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 10 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95% level of confidence, both expressed in µV/V
Dark blue :participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Blue : participants in SIM.EMK9 only
Orange : participants in APMP.EMK9
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 18 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  1.3  34.8 
AREPA  4.2  20.8 
NPL  2.8  12.7 
SP  3.2  9.5 
IEN  2.6  14.9 
CEM  0.2  39.9 
PTB  1.5  7.2 
NMiVSL  0.8  19.7 
INTI  2.3  15.7 
NMIA  2.7  13.7 
NRC  3.7  9.5 
VNIIM  0.7  20.4 
METAS  1.7  6.3 
NIST  3.9  16.8 
NIM  0.6  24.3 
BEV  3.2  20.4 
MIKES  6.8  10.6 
INETI  25.2  40.1 
OMH  3.3  52.1 
JV  0.5  24.3 
UME  3.5  30.3 
CMI  2.7  50.1 
Results are presented under A4 printable format in the Summary Results for 1000 V (PDF file).
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 20 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95% level of confidence, both expressed in µV/V
Dark blue :participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Blue : participants in SIM.EMK9 only
Orange : participants in APMP.EMK9
Brown : participant in SIM.EMK9.1 only
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 19 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  2.8  34.8 
AREPA  5.3  25.7 
NPL  5.7  22.8 
SP  2.3  10.5 
IEN  6.6  24.8 
CEM  1.7  43.8 
PTB  2.0  7.1 
NMiVSL  4.9  24.7 
INTI  5.0  19.7 
NMIA  3.0  15.7 
NRC  6.0  9.4 
VNIIM  4.9  32.2 
METAS  1.6  6.1 
NIST  5.7  15.9 
NIM  1.4  29.0 
BEV  5.3  24.4 
MIKES  11.6  11.5 
INETI  34.3  52.1 
OMH  15.4  80.1 
JV  2.4  28.2 
UME  4.6  40.2 
CMI  4.0  62.1 
Results are presented under A4 printable format in the Summary Results for 1000 V (PDF file).
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 50 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95% level of confidence, both expressed in µV/V
Dark blue :participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Blue : participants in SIM.EMK9 only
Orange : participants in APMP.EMK9
Brown : participant in SIM.EMK9.1 only
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 20 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  11.8  68.8 
AREPA  1.8  40.7 
NPL  7.2  31.6 
SP  4.8  14.2 
IEN  11.0  36.9 
CEM  16.2  63.8 
PTB  2.0  8.7 
NMiVSL  5.3  34.6 
INTI  4.1  23.6 
NMIA  4.9  27.5 
NRC  7.9  11.0 
VNIIM  22.3  51.4 
METAS  1.3  8.8 
NIST  3.3  20.9 
NIM  2.8  45.1 
BEV     
MIKES  27.3  23.8 
INETI  53.8  68.2 
OMH  25.3  120.1 
JV  0.4  42.3 
UME  6.4  44.3 
CMI  8.1  78.2 
Results are presented under A4 printable format in the Summary Results for 1000 V (PDF file).
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 100 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95% level of confidence, both expressed in µV/V
Dark blue : participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Blue : participants in SIM.EMK9 only
Orange : participants in APMP.EMK9
Brown : participant in SIM.EMK9.1
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 21 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  20.5  68.3 
AREPA  0.5  80.4 
NPL  10.5  61.2 
SP  10.5  20.8 
IEN  13.4  78.8 
CEM  9.5  97.5 
PTB  3.5  28.3 
NMiVSL  8.3  49.0 
INTI  2.7  38.7 
NMIA  12.3  39.8 
NRC  0.7  21.8 
VNIIM  22.7  100.5 
METAS  3.3  26.2 
NIST  6.1  27.4 
NIM  19.6  58.8 
BEV     
MIKES  40.3  82.7 
INETI  89.5  102.5 
OMH  27.1  200.2 
JV  11.6  68.7 
UME  12.0  66.8 
CMI  10.7  112.4 
Results are presented under A4 printable format in the Summary Results for 1000 V (PDF file).
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 1 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red : participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Orange : participants in APMP.EMK9
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 12 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  1.6  12.9 
AREPA  2.8  20.9 
NPL  1.2  12.9 
SP  1.8  7.8 
IEN  0.8  9.3 
CEM  2.2  30.0 
PTB  2.3  7.5 
NMiVSL  0.8  14.7 
INTI  3.2  11.9 
NMIA  2.4  8.8 
NRC  0.8  8.6 
VNIIM  0.5  16.5 
METAS  1.4  5.6 
NIST  4.1  10.8 
NIM  1.7  19.5 
BEV  0.2  13.5 
MIKES  0.9  8.8 
INETI  3.8  26.2 
OMH  2.2  31.1 
JV  0.5  20.3 
UME  1.5  22.3 
CMI  1.8  38.2 
Results are presented under A4 printable format in Summary Results for 500 V (PDF file).
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 10 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red : participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Orange : participants in APMP.EMK9
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 13 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  0.3  20.9 
AREPA  2.9  20.9 
NPL  5.1  12.8 
SP  2.9  8.7 
IEN  2.8  9.1 
CEM  1.1  29.9 
PTB  0.6  7.5 
NMiVSL  2.1  14.7 
INTI  3.9  13.8 
NMIA  3.1  8.7 
NRC  3.1  8.2 
VNIIM  0.0  16.9 
METAS  1.3  5.5 
NIST  3.3  10.3 
NIM  1.4  19.4 
BEV  1.9  15.4 
MIKES  6.5  8.0 
INETI  9.1  30.1 
OMH  3.1  36.1 
JV  0.4  22.3 
UME  2.4  22.3 
CMI  2.9  38.1 
Results are presented under A4 printable format in Summary Results for 500 V (PDF file).
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 20 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red : participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Orange : participants in APMP.EMK9
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 14 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  0.2  20.9 
AREPA  2.6  20.9 
NPL  6.4  16.8 
SP  1.6  9.7 
IEN  6.5  13.7 
CEM  1.6  29.9 
PTB  1.2  7.3 
NMiVSL  3.4  19.7 
INTI  3.3  15.8 
NMIA  3.7  9.6 
NRC  5.7  9.6 
VNIIM  5.8  24.5 
METAS  1.1  5.3 
NIST  3.8  10.8 
NIM  0.5  21.1 
BEV  3.6  19.4 
MIKES  8.2  8.8 
INETI  12.4  36.1 
OMH  1.3  40.1 
JV  0.1  24.3 
UME  2.1  26.3 
CMI  2.3  46.1 
Results are presented under A4 printable format in Summary Results for 500 V (PDF file).
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 50 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red : participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Orange : participants in APMP.EMK9
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 15 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  2.7  35.8 
AREPA  1.0  20.7 
NPL  8.0  23.7 
SP  5.0  13.5 
IEN  12.2  19.9 
CEM  6.0  37.8 
PTB  1.6  9.1 
NMiVSL  4.8  24.6 
INTI  4.0  17.6 
NMIA  7.0  14.5 
NRC  8.0  9.8 
VNIIM  20.1  40.4 
METAS  0.4  8.1 
NIST  4.1  13.5 
NIM  4.0  28.9 
BEV  7.0  21.5 
MIKES  22.1  13.8 
INETI  17.0  46.2 
OMH  1.9  63.1 
JV  1.8  34.3 
UME  2.8  36.2 
CMI  18.0  56.2 
Results are presented under A4 printable format in Summary Results for 500 V (PDF file).
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 100 kHz
Degrees of equivalence: D_{i} and expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in µV/V
Red : participants in CCEMK9
Green : participants in EUROMET.EMK9 only
Orange : participants in APMP.EMK9
Matrix of equivalence for CCEMK9 and EUROMET.EMK9
Pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 16 of the APMP.EMK9 Final Report.
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  1.7  35.3 
AREPA  6.0  40.4 
NPL  9.0  45.5 
SP  11.0  19.7 
IEN  14.4  47.1 
CEM  4.0  49.4 
PTB  0.6  20.6 
NMiVSL  3.9  39.3 
INTI  3.1  29.1 
NMIA  13.9  21.8 
NRC  0.9  22.9 
VNIIM  20.3  59.9 
METAS  3.9  25.0 
NIST  7.1  16.2 
NIM  21.6  39.0 
BEV  19.0  32.0 
MIKES  31.2  36.8 
INETI  12.0  72.4 
OMH  1.2  100.3 
JV  14.4  48.7 
UME  10.0  56.6 
CMI  13.1  80.4 
Results are presented under A4 printable format in Summary Results for 500 V (PDF file).
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 1 kHz
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  1.5  12.0 
AREPA  2.1  10.9 
NPL  5.1  12.0 
SP  2.1  6.9 
IEN  0.8  8.6 
CEM  2.1  22.0 
PTB  1.9  7.6 
NMiVSL  
INTI  4.5  9.9 
NMIA  1.6  6.9 
NRC  1.5  9.9 
VNIIM  1.0  12.6 
METAS  2.9  5.8 
NIST  4.0  5.4 
NIM  1.3  10.9 
BEV  0.1  10.5 
MIKES  0.8  7.5 
INETI  5.1  16.4 
OMH  
JV  0.8  18.7 
UME  1.1  18.3 
CMI  2.5  24.2 
In green : participants in EUROMET.EMK9 only
"" : pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed
No values from NMiVSL and OMH for this voltage and this frequency
Results are presented under A4 printable format in the Summary Results for 200 V (.PDF file).
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 10 kHz
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  3.3  12.9 
AREPA  2.9  10.8 
NPL  5.1  11.8 
SP  4.9  7.8 
IEN  1.1  8.6 
CEM  5.9  22.0 
PTB  0.8  7.6 
NMiVSL  
INTI  2.7  9.8 
NMIA  0.3  6.8 
NRC  0.7  9.8 
VNIIM  1.2  12.2 
METAS  1.9  5.7 
NIST  3.5  5.5 
NIM  3.1  10.8 
BEV  1.9  10.5 
MIKES  0.7  6.4 
INETI  4.9  16.3 
OMH  
JV  1.0  18.7 
UME  0.3  18.3 
CMI  7.7  24.2 
In green : participants in EUROMET.EMK9 only
"" : pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed
No values from NMiVSL and OMH for this voltage and this frequency
Results are presented under A4 printable format in the Summary Results for 200 V (.PDF file).
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 20 kHz
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  1.8  12.8 
AREPA  1.3  10.8 
NPL  3.7  13.9 
SP  4.3  8.7 
IEN  5.1  12.6 
CEM  5.3  21.8 
PTB  1.4  7.6 
NMiVSL  
INTI  2.4  11.8 
NMIA  0.4  7.7 
NRC  1.6  9.8 
VNIIM  2.6  20.0 
METAS  1.6  5.5 
NIST  3.4  5.5 
NIM  2.9  10.8 
BEV  2.3  12.4 
MIKES  1.2  7.1 
INETI  4.3  18.2 
OMH  
JV  0.8  20.2 
UME  2.2  24.1 
CMI  4.4  28.1 
In green : participants in EUROMET.EMK9 only
"" : pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed
No values from NMiVSL and OMH for this voltage and this frequency
Results are presented under A4 printable format in the Summary Results for 200 V (.PDF file).
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 50 kHz
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  6.3  15.8 
AREPA  1.2  10.6 
NPL  1.2  15.8 
SP  3.8  12.7 
IEN  9.9  18.0 
CEM  2.8  23.8 
PTB  0.8  9.4 
NMiVSL  
INTI  1.8  15.7 
NMIA  2.2  10.6 
NRC  5.2  13.7 
VNIIM  7.8  30.1 
METAS  0.9  8.5 
NIST  1.6  7.3 
NIM  2.5  11.9 
BEV  2.8  16.6 
MIKES  1.7  7.9 
INETI  5.8  20.4 
OMH  
JV  2.6  26.3 
UME  0.6  30.3 
CMI  4.8  36.3 
In green : participants in EUROMET.EMK9 only
"" : pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed
No values from NMiVSL and OMH for this voltage and this frequency
Results are presented under A4 printable format in the Summary Results for 200 V (.PDF file).
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 100 kHz
Lab i  D_{i}  U_{i} 
/ (µV/V)  / (µV/V)  
LNE  10.3  15.3 
AREPA  5.8  25.6 
NPL  0.8  19.4 
SP  11.2  18.5 
IEN  11.1  42.2 
CEM  6.2  28.4 
PTB  1.5  21.4 
NMiVSL  
INTI  0.9  23.5 
NMIA  7.1  17.3 
NRC  4.1  22.1 
VNIIM  0.6  40.2 
METAS  0.1  23.5 
NIST  1.9  9.6 
NIM  5.5  12.3 
BEV  8.2  21.8 
MIKES  5.9  10.0 
INETI  11.2  30.6 
OMH  
JV  11.8  36.5 
UME  1.1  44.4 
CMI  2.9  60.2 
In green : participants in EUROMET.EMK9 only
"" : pairwise degrees of equivalence between participants in CCEMK9 only and in EUROMET.EMK9 only are not explicitely computed
No values from NMiVSL and OMH for this voltage and this frequency
Results are presented under A4 printable format in the Summary Results for 200 V (.PDF file).
Metrology area, Subfield  Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer 
Description  Comparison of high voltage AC/DC converters 
Time of measurements  2000  2002 
Status  Approved for equivalence 
Final Reports of the comparisons  
Measurand  AC/DC transfer difference 
Parameters  Voltage: 1000 V, 500 V and 200 V Frequency: 1 kHz, 10 kHz, 20 kHz, 50 kHz and 100 kHz 
Transfer device  Reference voltage standards 
Comparison type  Key Comparison 
Consultative Committee  CCEM (Consultative Committee for Electricity and Magnetism) 
Conducted by  CCEM (Consultative Committee for Electricity and Magnetism) 
Comments  Results published on 02 December 2005 EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and SIM.EMK9.1 results are linked to those of CCEMK9 for common voltages and frequencies AC/DC voltage transfer standards

Pilot institute 
LNE
Laboratoire national de métrologie et d'essais France 
Contact person  A. Poletaeff +33 (0) 1 30 69 21 75 
Pilot laboratory  

LNE 
Laboratoire national de métrologie et d'essais, France, EURAMET 
AREPA 
Arepa Test and Calibration A/S, Denmark, EURAMET 
CEM 
Centro Español de Metrologia, Spain, EURAMET 
IEN 
Istituto Elettrotecnico Nazionale Galileo Ferraris; from 1st January 2006: Istituto Nazionale di Ricerca Metrologica, INRIM, Italy, EURAMET 
INTI 
Instituto Nacional de Tecnologia Industrial, Argentina, SIM 
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 
NMiVSL 
Nederlands Meetinstituut  Van Swinden Laboratorium (became VSL in 2009), Netherlands, EURAMET 
NPL 
National Physical Laboratory, United Kingdom, EURAMET 
NRC 
National Research Council, Canada, SIM 
PTB 
PhysikalischTechnische Bundesanstalt, Germany, EURAMET 
SP 
Technical Research Institute of Sweden from 2017 Research Institutes of Sweden AB, Sweden, EURAMET 
VNIIM 
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET 
This page proposes printout 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" :
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 1 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 0.2 µV/V, U_{R} = 3.1 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
INTI, NRC and NIST provide the link between key comparisons CCEMK9 and SIM.EMK9. The linkage process is described in section 11 of SIM.EMK9 Final Report. 
The degree of equivalence of the laboratory i participant in SIM.EMK9 with respect to the key comparison reference value is given by a pair of terms: D_{i}_{ }and U_{i}, its expanded uncertainty (k = 2). The computation of the degrees of equivalence is explained in SIM.EMK9 Final Report. 
The degree of equivalence between two laboratories i and j is not computed for the laboratories participant in key comparison SIM.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes it possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 17 of the Final Report. They are not reported here.
The linkage process is based on the results of the common participant, the LNE, and is detailed in Section 9 of the SIM.EMK9.1 Final Report. This makes it possible to extend the graph of equivalence to INMETRO.
CCEMK9, EUROMET.EMK9, SIM.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 10 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 2.3 µV/V, U_{R} = 3.4 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
INTI, NRC and NIST provide the link between key comparisons CCEMK9 and SIM.EMK9. The linkage process is described in section 11 of SIM.EMK9 Final Report. 
The degree of equivalence of the laboratory i participant in SIM.EMK9 with respect to the key comparison reference value is given by a pair of terms: D_{i}_{ }and U_{i}, its expanded uncertainty (k = 2). The computation of the degrees of equivalence is explained in SIM.EMK9 Final Report. 
The degree of equivalence between two laboratories i and j is not computed for the laboratories participant in key comparison SIM.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes in possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 18 of the Final Report. They are not reported here.
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 20 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 5.2 µV/V, U_{R} = 3.7 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
INTI, NRC and NIST provide the link between key comparisons CCEMK9 and SIM.EMK9. The linkage process is described in section 11 of SIM.EMK9 Final Report. 
The degree of equivalence of the laboratory i participant in SIM.EMK9 with respect to the key comparison reference value is given by a pair of terms: D_{i}_{ }and U_{i}, its expanded uncertainty (k = 2). The computation of the degrees of equivalence is explained in SIM.EMK9 Final Report. 
The degree of equivalence between two laboratories i and j is not computed for the laboratories participant in key comparison SIM.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes it possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 19 of the Final Report. They are not reported here.
The linkage process is based on the results of the common participant, the LNE, and is detailed in Section 9 of the SIM.EMK9.1 Final Report. This makes it possible to extend the graph of equivalence to INMETRO.
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 50 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 19.9 µV/V, U_{R} = 5.0 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
INTI, NRC and NIST provide the link between key comparisons CCEMK9 and SIM.EMK9. The linkage process is described in section 11 of SIM.EMK9 Final Report. 
The degree of equivalence of the laboratory i participant in SIM.EMK9 with respect to the key comparison reference value is given by a pair of terms: D_{i}_{ }and U_{i}, its expanded uncertainty (k = 2). The computation of the degrees of equivalence is explained in SIM.EMK9 Final Report. 
The degree of equivalence between two laboratories i and j is not computed for the laboratories participant in key comparison SIM.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes it possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 20 of the Final Report. They are not reported here.
The linkage process is based on the results of the common participant, the LNE, and is detailed in Section 9 of the SIM.EMK9.1 Final Report. This makes it possible to extend the graph of equivalence to INMETRO.
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 100 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 53.1 µV/V, U_{R} = 10.0 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
INTI, NRC and NIST provide the link between key comparisons CCEMK9 and SIM.EMK9. The linkage process is described in section 11 of SIM.EMK9 Final Report. 
The degree of equivalence of the laboratory i participant in SIM.EMK9 with respect to the key comparison reference value is given by a pair of terms: D_{i}_{ }and U_{i}, its expanded uncertainty (k = 2). The computation of the degrees of equivalence is explained in SIM.EMK9 Final Report. 
The degree of equivalence between two laboratories i and j is not computed for the laboratories participant in key comparison SIM.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes it possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 21 of the Final Report. They are not reported here.
The linkage process is based on the results of the common participant, the LNE, and is detailed in Section 9 of the SIM.EMK9.1 Final Report. This makes it possible to extend the graph of equivalence to INMETRO.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 1 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 1.8 µV/V, U_{R} = 2.8 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes in possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 12 of the Final Report. They are not reported here.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 10 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 2.2 µV/V, U_{R} = 2.8 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes in possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 13 of the Final Report. They are not reported here.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 20 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 5.8 µV/V, U_{R} = 3.2 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes in possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 14 of the Final Report. They are not reported here.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 50 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 20.9 µV/V, U_{R} = 4.2 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes in possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 15 of the Final Report. They are not reported here.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 100 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 59.9 µV/V, U_{R} = 7.6 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
The linkage process is based on the results of the common participants, NMIA and PTB, and is detailed in Sections 8 and 9 of the APMP.EMK9 Final Report.
This makes in possible to extend the graph of equivalence to participants in APMP.EMK9 only.
Pairwise degrees of equivalence inside APMP.EMK9 are given in Table 16 of the Final Report. They are not reported here.
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 1 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 1.4 µV/V, U_{R} = 2.4 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 10 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 2.5 µV/V, U_{R} = 2.5 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 20 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 5.9 µV/V, U_{R} = 2.6 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 50 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 21.9 µV/V, U_{R} = 3.5 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 100 kHz
The key comparison reference value, x_{R}, is computed as the weighted average of the adjusted values obtained by the CCEMK9 participants. Its expanded uncertainty is U_{R} = 2u_{R}, where u_{R} is the standard uncertainty of the weighted average. All adjusted values from CCEMK9 participants have been taken into account in the calculation, except the value of AREPA, which is traceable to PTB. x_{R} = 60.4 µV/V, U_{R} = 5.3 µV/V 
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by two terms: D_{i} = (x_{i}  x_{R}) and its expanded uncertainty at a 95 % level of confidence U_{i} computed as explained on page 15 of the CCEMK9 Final Report and on page 12 of the EUROMET.EMK9 Final Report, both expressed in µV/V. 
The degree of equivalence between two laboratories i and j is given by two terms: D_{ij} = (D_{i}  D_{j}) and its expanded uncertainty U_{ij} at a 95 % level of confidence computed as explained in the Appendices 1 of the CCEMK9 Final Report and EUROMET.EMK9 Final Report, both expressed in µV/V. The CCEMK9 Matrix of equivalence is extended with degrees of equivalence between participants in EUROMET.EMK9. 
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 1 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{Lab} _{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{Lab} _{i} / (µV/V) 
Date of measurement 
LNE*  6.0  16.1  Feb 2000 
BEV** 
0.7 
18.1 
Apr 2000 
MIKES** 
0.1 
10.1 
May 2000 
INETI** 
13.7 
32.0 
Jun 2000 
AREPA*  4.7  21.1  Jul 2000 
NPL*  0.3  13.1  Aug 2000 
SP*  2.7  9.1  Sep 2000 
IEN*  0.7  14.9  Oct 2000 
CEM*  6.3  36.0  Nov 2000 
PTB*  0.5  8.0  Jan 2001 
NMiVSL*  3.0  20.0  May 2001 
OMH** 
0.6 
43.0 
Oct 2001 
JV** 
1.1 
22.1 
Mar 2002 
UME** 
0.9 
30.1 
Apr 2002 
INTI  4.5  14.1  Jul 2000 
NMIA  1.0  11.1  Nov 2000 
NRC  0.5  10.1  Mar 2001 
VNIIM  0.6  20.3  May 2001 
METAS*  1.5  6.2  Aug 2001 
NIST  7.4  17.1  Jan 2002 
NIM  0.8  24.3  May 2002 
CMI** 
7.5 
50.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
d_{Lab iSIM} : result of measurement carried out by laboratory i participant in SIM.EMK9
U_{Lab }_{iSIM} : expanded uncertainty (k = 2) of d_{Lab iSIM}
u_{Lab iSIM }: standard uncertainty (k = 1) of d_{Lab iSIM}
Lab i  d_{Lab iSIM} / (µV/V) 
U_{Lab iSIM} / (µV/V) 
Date of measurement 
NIST  10  11.6  Jan to Feb 04 
INTI 
5.2 
16 
04 Mar to 16 Apr 04 
INMETRO  5  18  28 Jun to 28 July 04 
CENAM 
5.7 
15 
07 to 24 Aug 04 
NRC 
6.7 
10 
Sep to Oct 04 
Lab i  d_{Lab iSIM} / (µV/V) 
u_{Lab iSIM} / (µV/V) 
Date of measurement 
UTE  4  11  18 May to 22 Jun 04 
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 3 of the Final Report. They were taken between 2000 and 2004.
Measurement results of the participants in key comparison SIM.EMK9.1 are given in Table IV of the Final Report. They were taken in 2012.
CCEMK9, EUROMET.EMK9, SIM.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 10 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{Lab} _{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{Lab} _{i} / (µV/V) 
Date of measurement 
LNE*  1.0  35.0  Feb 2000 
BEV** 
0.9 
20.1 
Apr 2000 
MIKES** 
9.1 
10.0 
May 2000 
INETI** 
22.9 
40.0 
Jun 2000 
AREPA*  1.9  21.1  Jul 2000 
NPL*  5.1  13.1  Aug 2000 
SP*  0.9  10.1  Sep 2000 
IEN*  4.9  15.3  Oct 2000 
CEM*  2.1  40.0  Nov 2000 
PTB*  3.8  8.0  Jan 2001 
NMiVSL*  3.1  20.0  May 2001 
OMH** 
1.0 
52.0 
Oct 2001 
JV** 
2.8 
24.1 
Mar 2002 
UME** 
1.2 
30.1 
Apr 2002 
INTI  4.6  16.1  Jul 2000 
NMIA  0.4  14.1  Nov 2000 
NRC  1.4  10.1  Mar 2001 
VNIIM  3.0  20.7  May 2001 
METAS*  4.0  7.2  Aug 2001 
NIST  1.6  17.1  Jan 2002 
NIM  1.7  24.5  May 2002 
CMI** 
0.4 
50.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
d_{Lab iSIM} : result of measurement carried out by laboratory i participant in SIM.EMK9
U_{Lab }_{iSIM} : expanded uncertainty (k = 2) of d_{Lab iSIM}u_{Lab iSIM }: standard uncertainty (k = 1) of d_{Lab iSIM}
Lab i  d_{Lab iSIM} / (µV/V) 
U_{Lab iSIM} / (µV/V) 
Date of measurement 
NIST  4  11.7  Jan to Feb 04 
INTI 
3.2 
20 
04 Mar to 16 Apr 04 
INMETRO  0  18  28 Jun to 28 July 04 
CENAM 
4.2 
15 
07 to 24 Aug 04 
NRC 
2.9 
10 
Sep to Oct 04 
Lab i  d_{Lab iSIM} / (µV/V) 
u_{Lab iSIM} / (µV/V) 
Date of measurement 
UTE  10  12  18 May to 22 Jun 04 
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 3 of the Final Report. They were taken between 2000 and 2004.
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 20 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{Lab} _{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{Lab} _{i} / (µV/V) 
Date of measurement 
LNE*  8.0  35.0  Feb 2000 
BEV** 
0.1 
24.1 
Apr 2000 
MIKES** 
16.8 
10.9 
May 2000 
INETI** 
29.1 
52.0 
Jun 2000 
AREPA*  0.1  26.0  Jul 2000 
NPL*  10.9  23.1  Aug 2000 
SP*  2.9  11.1  Sep 2000 
IEN*  11.8  25.1  Oct 2000 
CEM*  6.9  44.0  Nov 2000 
PTB*  7.2  8.0  Jan 2001 
NMiVSL*  10.1  25.0  May 2001 
OMH** 
20.6 
80.0 
Oct 2001 
JV** 
7.6 
28.0 
Mar 2002 
UME** 
0.6 
40.0 
Apr 2002 
INTI  10.2  20.0  Jul 2000 
NMIA  2.2  16.1  Nov 2000 
NRC  0.8  10.1  Mar 2001 
VNIIM  10.1  32.4  May 2001 
METAS*  6.8  7.1  Aug 2001 
NIST  0.5  16.3  Jan 2002 
NIM  3.8  29.2  May 2002 
CMI** 
1.2 
62.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
d_{Lab iSIM} : result of measurement carried out by laboratory i participant in SIM.EMK9
U_{Lab }_{iSIM} : expanded uncertainty (k = 2) of d_{Lab iSIM}
u_{Lab iSIM }: standard uncertainty (k = 1) of d_{Lab iSIM}
Lab i  d_{Lab iSIM} / (µV/V) 
U_{Lab iSIM} / (µV/V) 
Date of measurement 
NIST  1  14.1  Jan to Feb 04 
INTI 
6.1 
33 
04 Mar to 16 Apr 04 
INMETRO  2  18  28 Jun to 28 July 04 
CENAM 
3.9 
17 
07 to 24 Aug 04 
NRC 
2.2 
10 
Sep to Oct 04 
Lab i  d_{Lab iSIM} / (µV/V) 
u_{Lab iSIM} / (µV/V) 
Date of measurement 
UTE  11  11  18 May to 22 Jun 04 
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 3 of the Final Report. They were taken between 2000 and 2004.
Measurement results of the participants in key comparison SIM.EMK9.1 are given in Table IV of the Final Report. They were taken in 2012.
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 50 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{Lab} _{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{Lab} _{i} / (µV/V) 
Date of measurement 
LNE*  31.7  69.0  Feb 2000 
BEV** 
 
 
Apr 2000 
MIKES** 
47.2 
23.3 
May 2000 
INETI** 
33.9 
68.0 
Jun 2000 
AREPA*  18.1  41.0  Jul 2000 
NPL*  27.1  32.0  Aug 2000 
SP*  15.1  15.1  Sep 2000 
IEN*  30.9  37.2  Oct 2000 
CEM*  36.1  64.0  Nov 2000 
PTB*  21.9  10.0  Jan 2001 
NMiVSL*  25.2  35.0  May 2001 
OMH** 
45.2 
120.0 
Oct 2001 
JV** 
19.5 
42.0 
Mar 2002 
UME** 
13.5 
44.0 
Apr 2002 
INTI  24.0  24.1  Jul 2000 
NMIA  15.0  28.0  Nov 2000 
NRC  12.0  12.1  Mar 2001 
VNIIM  42.2  51.6  May 2001 
METAS*  21.2  10.1  Aug 2001 
NIST  23.2  21.5  Jan 2002 
NIM  22.7  45.4  May 2002 
CMI** 
28.0 
78.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
d_{Lab iSIM} : result of measurement carried out by laboratory i participant in SIM.EMK9
U_{Lab }_{iSIM} : expanded uncertainty (k = 2) of d_{Lab iSIM}
Lab i  d_{Lab iSIM} / (µV/V) 
U_{Lab iSIM} / (µV/V) 
Date of measurement 
NIST  18  15.4  Jan to Feb 04 
INTI 
1.7 
37 
04 Mar to 16 Apr 04 
INMETRO  9  18  28 Jun to 28 July 04 
CENAM 
3.3 
27 
07 to 24 Aug 04 
NRC 
10.6 
13 
Sep to Oct 04 
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 3 of the Final Report. They were taken between 2000 and 2004.
Measurement results of the participants in key comparison SIM.EMK9.1 are given in Table IV of the Final Report. They were taken in 2012.
CCEMK9, EUROMET.EMK9, SIM.EMK9, APMP.EMK9 and
SIM.EMK9.1
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 1000 V
FREQUENCY : 100 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{Lab} _{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{Lab} _{i} / (µV/V) 
Date of measurement 
LNE*  73.6  69.0  Feb 2000 
BEV** 
 
 
Apr 2000 
MIKES** 
93.4 
82.1 
May 2000 
INETI** 
36.4 
102.0 
Jun 2000 
AREPA*  52.6  81.0  Jul 2000 
NPL*  63.6  62.0  Aug 2000 
SP*  42.6  23.1  Sep 2000 
IEN*  66.5  79.4  Oct 2000 
CEM*  62.6  98.0  Nov 2000 
PTB*  56.6  30.0  Jan 2001 
NMiVSL*  61.4  50.0  May 2001 
OMH** 
80.2 
200.0 
Oct 2001 
JV** 
41.5 
68.0 
Mar 2002 
UME** 
41.1 
66.0 
Apr 2002 
INTI  55.8  40.0  Jul 2000 
NMIA  40.8  41.0  Nov 2000 
NRC  53.8  24.0  Mar 2001 
VNIIM  30.4  101.0  May 2001 
METAS*  49.8  28.0  Aug 2001 
NIST  59.2  29.2  Jan 2002 
NIM  72.7  59.6  May 2002 
CMI** 
63.8 
112.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
d_{Lab iSIM} : result of measurement carried out by laboratory i participant in SIM.EMK9
U_{Lab }_{iSIM} : expanded uncertainty (k = 2) of d_{Lab iSIM}
Lab i  d_{Lab iSIM} / (µV/V) 
U_{Lab iSIM} / (µV/V) 
Date of measurement 
NIST  35  23.4  Jan to Feb 04 
INTI 
10.5 
74 
04 Mar to 16 Apr 04 
INMETRO  25  42  28 Jun to 28 July 04 
CENAM 
3.9 
27 
07 to 24 Aug 04 
NRC 
18 
25 
Sep to Oct 04 

Measurement results of the participants in key comparison APMP.EMK9 are given in Table 3 of the Final Report. They were taken between 2000 and 2004.
Measurement results of the participants in key comparison SIM.EMK9.1 are given in Table IV of the Final Report. They were taken in 2012.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 1 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  3.4  13.2  Feb 2000 
BEV** 
1.6 
13.2 
Apr 2000 
MIKES** 
0.9 
8.3 
May 2000 
INETI** 
5.6 
26.1 
Jun 2000 
AREPA*  4.6  21.1  Jul 2000 
NPL*  0.6  13.2  Aug 2000 
SP*  3.6  8.3  Sep 2000 
IEN*  1.0  9.7  Oct 2000 
CEM*  0.4  30.1  Nov 2000 
PTB*  0.5  8.0  Jan 2001 
NMiVSL*  2.6  15.0  May 2001 
OMH** 
0.4 
31.0 
Oct 2001 
JV** 
1.3 
20.1 
Mar 2002 
UME** 
0.3 
22.1 
Apr 2002 
INTI  1.4  12.2  Jul 2000 
NMIA  4.2  9.2  Nov 2000 
NRC  2.6  9.0  Mar 2001 
VNIIM  2.3  16.7  May 2001 
METAS*  0.4  6.3  Aug 2001 
NIST  5.9  11.2  Jan 2002 
NIM  0.1  19.7  May 2002 
CMI** 
3.6 
38.1 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 2 of the Final Report. They were taken between 2000 and 2004.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 10 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  2.5  21.1  Feb 2000 
BEV** 
0.3 
15.1 
Apr 2000 
MIKES** 
8.7 
7.5 
May 2000 
INETI** 
11.3 
30.0 
Jun 2000 
AREPA*  0.7  21.1  Jul 2000 
NPL*  7.3  13.1  Aug 2000 
SP*  0.7  9.1  Sep 2000 
IEN*  5.0  9.5  Oct 2000 
CEM*  3.3  30.0  Nov 2000 
PTB*  2.8  8.0  Jan 2001 
NMiVSL*  4.3  15.0  May 2001 
OMH** 
5.3 
36.0 
Oct 2001 
JV** 
1.8 
22.1 
Mar 2002 
UME** 
0.2 
22.1 
Apr 2002 
INTI  6.1  14.1  Jul 2000 
NMIA  0.9  9.1  Nov 2000 
NRC  0.9  8.7  Mar 2001 
VNIIM  2.2  17.1  May 2001 
METAS*  3.5  6.2  Aug 2001 
NIST  1.1  10.7  Jan 2002 
NIM  3.6  19.6  May 2002 
CMI** 
5.1 
38.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 2 of the Final Report. They were taken between 2000 and 2004.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 20 kHz
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  6.0  21.1  Feb 2000 
BEV** 
2.2 
19.1 
Apr 2000 
MIKES** 
14.0 
8.2 
May 2000 
INETI** 
18.2 
36.0 
Jun 2000 
AREPA*  3.2  21.1  Jul 2000 
NPL*  12.2  17.1  Aug 2000 
SP*  4.2  10.2  Sep 2000 
IEN*  12.3  14.1  Oct 2000 
CEM*  4.2  30.1  Nov 2000 
PTB*  7.0  8.0  Jan 2001 
NMiVSL*  9.2  20.0  May 2001 
OMH** 
7.1 
40.0 
Oct 2001 
JV** 
5.7 
24.1 
Mar 2002 
UME** 
3.7 
26.1 
Apr 2002 
INTI  9.1  16.1  Jul 2000 
NMIA  2.1  10.1  Nov 2000 
NRC  0.1  10.1  Mar 2001 
VNIIM  11.6  24.7  May 2001 
METAS*  6.9  6.2  Aug 2001 
NIST  2.0  11.3  Jan 2002 
NIM  6.3  21.3  May 2002 
CMI** 
8.1 
46.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 2 of the Final Report. They were taken between 2000 and 2004.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 50 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  23.6  36.0  Feb 2000 
BEV** 
13.9 
21.1 
Apr 2000 
MIKES** 
43.0 
13.1 
May 2000 
INETI** 
37.9 
46.0 
Jun 2000 
AREPA*  19.9  21.1  Jul 2000 
NPL*  28.9  24.1  Aug 2000 
SP*  15.9  14.1  Sep 2000 
IEN*  33.1  20.3  Oct 2000 
CEM*  26.9  38.0  Nov 2000 
PTB*  22.5  10.0  Jan 2001 
NMiVSL*  25.7  25.0  May 2001 
OMH** 
19.0 
63.0 
Oct 2001 
JV** 
19.1 
34.0 
Mar 2002 
UME** 
18.1 
36.0 
Apr 2002 
INTI  24.9  18.1  Jul 2000 
NMIA  13.9  15.1  Nov 2000 
NRC  12.9  10.7  Mar 2001 
VNIIM  41.0  40.6  May 2001 
METAS*  21.3  9.1  Aug 2001 
NIST  25.0  14.1  Jan 2002 
NIM  24.9  29.2  May 2002 
CMI** 
38.9 
56.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 2 of the Final Report. They were taken between 2000 and 2004.
CCEMK9, EUROMET.EMK9 and APMP.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 500 V
FREQUENCY : 100 kHz
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  61.6  36.1  Feb 2000 
BEV** 
40.9 
31.1 
Apr 2000 
MIKES** 
91.1 
36.0 
May 2000 
INETI** 
71.9 
72.0 
Jun 2000 
AREPA*  53.9  41.1  Jul 2000 
NPL*  68.9  46.1  Aug 2000 
SP*  48.9  21.1  Sep 2000 
IEN*  74.3  47.7  Oct 2000 
CEM*  55.9  50.0  Nov 2000 
PTB*  60.5  22.0  Jan 2001 
NMiVSL*  63.8  40.0  May 2001 
OMH** 
61.1 
100.0 
Oct 2001 
JV** 
45.5 
48.1 
Mar 2002 
UME** 
49.9 
56.1 
Apr 2002 
INTI  63.0  30.1  Jul 2000 
NMIA  46.0  23.1  Nov 2000 
NRC  59.0  24.1  Mar 2001 
VNIIM  80.2  60.4  May 2001 
METAS*  56.0  26.1  Aug 2001 
NIST  67.0  17.9  Jan 2002 
NIM  81.5  39.7  May 2002 
CMI** 
73.0 
80.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
Measurement results of the participants in key comparison APMP.EMK9 are given in Table 2 of the Final Report. They were taken between 2000 and 2004.
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 1 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  0.1  12.2  Feb 2000 
BEV** 
1.5 
10.2 
Apr 2000 
MIKES** 
0.6 
7.1 
May 2000 
INETI** 
6.5 
16.2 
Jun 2000 
AREPA*  3.5  11.2  Jul 2000 
NPL*  6.5  12.2  Aug 2000 
SP*  3.5  7.3  Sep 2000 
IEN*  2.2  8.9  Oct 2000 
CEM*  3.5  22.1  Nov 2000 
PTB*  0.5  8.0  Jan 2001 
NMiVSL*      May 2001 
OMH** 
 
 
Oct 2001 
JV** 
0.6 
18.5 
Mar 2002 
UME** 
0.3 
18.1 
Apr 2002 
INTI  3.1  10.2  Jul 2000 
NMIA  0.2  7.3  Nov 2000 
NRC  0.1  10.2  Mar 2001 
VNIIM  2.4  12.8  May 2001 
METAS*  1.5  6.3  Aug 2001 
NIST  5.4  5.9  Jan 2002 
NIM  0.1  11.2  May 2002 
CMI** 
1.1 
24.1 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 10 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  5.8  13.1  Feb 2000 
BEV** 
0.6 
10.2 
Apr 2000 
MIKES** 
1.8 
5.9 
May 2000 
INETI** 
2.4 
16.1 
Jun 2000 
AREPA*  0.4  11.1  Jul 2000 
NPL*  7.6  12.1  Aug 2000 
SP*  2.4  8.2  Sep 2000 
IEN*  3.6  9.0  Oct 2000 
CEM*  3.4  22.1  Nov 2000 
PTB*  3.3  8.0  Jan 2001 
NMiVSL*      May 2001 
OMH** 
 
 
Oct 2001 
JV** 
1.5 
18.5 
Mar 2002 
UME** 
2.2 
18.1 
Apr 2002 
INTI  5.2  10.1  Jul 2000 
NMIA  2.2  7.2  Nov 2000 
NRC  3.2  10.1  Mar 2001 
VNIIM  1.3  12.5  May 2001 
METAS*  4.4  6.2  Aug 2001 
NIST  1.0  6.0  Jan 2002 
NIM  5.6  11.1  May 2002 
CMI** 
10.2 
24.1 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 20 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  7.7  13.1  Feb 2000 
BEV** 
3.6 
12.1 
Apr 2000 
MIKES** 
4.7 
6.6 
May 2000 
INETI** 
1.6 
18.0 
Jun 2000 
AREPA*  4.6  11.1  Jul 2000 
NPL*  9.6  14.1  Aug 2000 
SP*  1.6  9.1  Sep 2000 
IEN*  11.0  12.9  Oct 2000 
CEM*  0.6  22.0  Nov 2000 
PTB*  7.3  8.0  Jan 2001 
NMiVSL*      May 2001 
OMH** 
 
 
Oct 2001 
JV** 
5.1 
20.0 
Mar 2002 
UME** 
8.1 
24.0 
Apr 2002 
INTI  8.3  12.1  Jul 2000 
NMIA  6.3  8.1  Nov 2000 
NRC  4.3  10.1  Mar 2001 
VNIIM  3.3  20.2  May 2001 
METAS*  7.5  6.1  Aug 2001 
NIST  2.5  6.1  Jan 2002 
NIM  8.8  11.1  May 2002 
CMI** 
10.3 
28.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 50 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  28.2  16.2  Feb 2000 
BEV** 
19.1 
16.2 
Apr 2000 
MIKES** 
20.2 
7.1 
May 2000 
INETI** 
16.1 
20.1 
Jun 2000 
AREPA*  23.1  11.2  Jul 2000 
NPL*  23.1  16.2  Aug 2000 
SP*  18.1  13.2  Sep 2000 
IEN*  31.8  18.3  Oct 2000 
CEM*  19.1  24.1  Nov 2000 
PTB*  22.7  10.0  Jan 2001 
NMiVSL*      May 2001 
OMH** 
 
 
Oct 2001 
JV** 
19.3 
26.1 
Mar 2002 
UME** 
21.3 
30.1 
Apr 2002 
INTI  23.7  16.1  Jul 2000 
NMIA  19.7  11.2  Nov 2000 
NRC  16.7  14.1  Mar 2001 
VNIIM  14.1  30.3  May 2001 
METAS*  22.8  9.2  Aug 2001 
NIST  20.3  8.1  Jan 2002 
NIM  24.4  12.4  May 2002 
CMI** 
26.7 
36.1 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only
CCEMK9 and EUROMET.EMK9
MEASURAND : AC/DC voltage transfer difference
VOLTAGE : 200 V
FREQUENCY : 100 kHz
x_{i} : adjusted value of the measurement reported by laboratory i (see on page 13 of the CCEM Final Report and on page 11 of the EUROMET.EMK9 Final Report)
U_{i} : expanded uncertainty at a 95 % level of confidence of x_{i}
Lab i  x_{i} / (µV/V) 
U_{i} / (µV/V) 
Date of measurement 
LNE*  70.7  16.2  Feb 2000 
BEV** 
52.2 
21.1 
Apr 2000 
MIKES** 
54.5 
8.5 
May 2000 
INETI** 
49.2 
30.1 
Jun 2000 
AREPA*  66.2  26.1  Jul 2000 
NPL*  61.2  20.1  Aug 2000 
SP*  49.2  19.2  Sep 2000 
IEN*  71.5  42.5  Oct 2000 
CEM*  54.2  28.9  Nov 2000 
PTB*  61.9  22.0  Jan 2001 
NMiVSL*      May 2001 
OMH** 
 
 
Oct 2001 
JV** 
48.6 
36.1 
Mar 2002 
UME** 
59.3 
44.1 
Apr 2002 
INTI  61.3  24.1  Jul 2000 
NMIA  53.3  18.1  Nov 2000 
NRC  56.3  22.7  Mar 2001 
VNIIM  61.0  40.5  May 2001 
METAS*  60.3  24.1  Aug 2001 
NIST  58.5  11.0  Jan 2002 
NIM  65.9  13.4  May 2002 
CMI** 
63.3 
60.0 
Dec 2002 
* common participant in CCEMK9 and EUROMET.EMK9
** participant in EUROMET.EMK9 only