CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K

Measurand : Resistance ratio, W, at fixed-point temperature

GRAPH OF APPROXIMATE EQUIVALENCE (graph with no baseline)

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K

GRAPH OF APPROXIMATE EQUIVALENCE (graph with no baseline)

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K

GRAPH OF APPROXIMATE EQUIVALENCE (graph with no baseline)

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K

Click on one of the following links to access to the graphs of equivalence relative to each of the participating laboratories in CCT-K3:

The BIPM and the SMU did not participate in the measurements of the Indium Freezing Point.

GRAPH OF APPROXIMATE EQUIVALENCE (graph with no baseline)

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K

GRAPH OF APPROXIMATE EQUIVALENCE (graph with no baseline)

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K

GRAPH OF APPROXIMATE EQUIVALENCE (graph with no baseline)

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Aluminum Freezing Point, 933.473 K

Click on one of the following links to access to the graphs of equivalence relative to each of the participating laboratories in CCT-K3:

The BIPM, the MSL and the NPL did not participate in the measurements of the Aluminum Freezing Point.

GRAPH OF APPROXIMATE EQUIVALENCE (graph with no baseline)

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K

Measurand : Resistance ratio, W, at fixed-point temperature

Click on Matrix of equivalence to view the degrees of equivalence
Dij and expanded uncertainty Uij

(at a 95% level of confidence), expressed in mK

Unless otherwise stated, in the final numbers presented in the Matrices of equivalence, rounding has been applied according to ISO-31-0 Annex B Rule B.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K

Click on Matrix of equivalence to view the degrees of equivalence
Dij and expanded uncertainty Uij

(at a 95% level of confidence), expressed in mK

Unless otherwise stated, in the final numbers presented in the Matrices of equivalence, rounding has been applied according to ISO-31-0 Annex B Rule B.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K

Click on Matrix of equivalence to view the degrees of equivalence
Dij and expanded uncertainty Uij

(at a 95% level of confidence), expressed in mK

Unless otherwise stated, in the final numbers presented in the Matrices of equivalence, rounding has been applied according to ISO-31-0 Annex B Rule B.

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K

Click on Matrix of equivalence to view the degrees of equivalence
Dij and expanded uncertainty Uij
(at a 95% level of confidence), expressed in mK

Unless otherwise stated, in the final numbers presented in the Matrices of equivalence, rounding has been applied according to ISO-31-0 Annex B Rule B.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K

Click on Matrix of equivalence to view the degrees of equivalence
Dij and expanded uncertainty Uij

(at a 95% level of confidence), expressed in mK

Unless otherwise stated, in the final numbers presented in the Matrices of equivalence, rounding has been applied according to ISO-31-0 Annex B Rule B.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K

Click on Matrix of equivalence to view the degrees of equivalence
Dij and expanded uncertainty Uij

(at a 95% level of confidence), expressed in mK

Unless otherwise stated, in the final numbers presented in the Matrices of equivalence, rounding has been applied according to ISO-31-0 Annex B Rule B.

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Aluminum Freezing Point, 933.473 K

Click on Matrix of equivalence to view the degrees of equivalence
Dij and expanded uncertainty Uij
(at a 95% level of confidence), expressed in mK

Unless otherwise stated, in the final numbers presented in the Matrices of equivalence, rounding has been applied according to ISO-31-0 Annex B Rule B.

Comparison
Comparison close
CC comparison
Linked comparison
Metrology area, Sub-field Thermometry, Standard Platinum Resistance Thermometers
Description Realizations of the ITS-90 from 83.8058 K to 933.473 K
Time of measurements 1997 - 2001
Status Approved for equivalence
Final Reports of the comparisons
Measurand Temperature: 83.8058 K to 933.473 K
Transfer device Long-stem standard platinum resistance thermometers, Ga and Cd Fixed-point cells
Comparison type Key Comparison
Consultative Committee CCT (Consultative Committee for Thermometry)
Conducted by CCT (Consultative Committee for Thermometry)
Comments

Measurements were carried out at 7 temperatures:

  • Argon (Ar) Triple Point, 83.8058 K,
  • Mercury (Hg) Triple Point, 234.3156 K,
  • Gallium (Ga) Melting Point, 302.9146 K,
  • Indium (In) Freezing Point, 429.7485 K,
  • Tin (Sn) Freezing Point, 505.078 K,
  • Zinc (Zn) Freezing Point, 692.677 K, and
  • Aluminum (Al) Freezing Point, 933.473 K.

Results were published on 25 March 2003

Realizations of the ITS-90 from 83.8058 K to 933.473 K

Pilot institute NIST
National Institute of Standards and Technology
United States
Contact person B. Mangum
noemail1@nist.gov
+1 301 975 4803
Additional
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
NIST

National Institute of Standards and Technology, United States, SIM

BIPM

Bureau International des Poids et Mesures, BIPM - International Organization, N/A

BNM-INM

Bureau National de Métrologie - Institut National de Métrologie, France, EURAMET

CNR-IMGC

Consiglio Nazionale delle Ricerche - Istituto di Metrologia G. Colonnetti (until 2006), Italy, EURAMET

CSIRO-NML

Commonwealth Scientific and Industrial Research Organization - National Measurement Laboratory; became National Measurement Institute, Australia, NMIA in 2004, Australia, APMP

KRISS

Korea Research Institute of Standards and Science, Korea, Republic of, APMP

MSL

Measurement Standards Laboratory, New Zealand, APMP

NIM

National Institute of Metrology, China, APMP

NMIJ AIST

National Metrology Institute of Japan, Japan, APMP

NMi-VSL

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

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

SMU

Slovensky Metrologicky Ustav, Slovakia, EURAMET

VNIIM

D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K

Measurand : Resistance ratio, W, at fixed-point temperature

Key comparison reference value:
The contents of the Appendix B of the MRA for CCT Key Comparison 3 were approved by a majority vote of the CCT. Due to the myriad of technical problems, it was not possible to reach a consensus on whether 1) to use a key comparison reference value, or 2) not to use a key comparison value. The viewpoints of the NMI participants are contained within the CCT-K3 Final Report (NIST Technical Note 1450).
The CCT agrees by consensus that the absence of a key comparison reference value in this Appendix does not preclude the use of a key comparison refrence value in other key comparisons.

The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = Ti - Tj and the expanded uncertainty (95%) Uij of Dij, both expressed in mK.

The pair-wise temperature differences and their associated uncertainties were calculated for the various laboratories by two paths. Those paths are indicated by the terms ‘direct’ and ‘inclusive’, or the corresponding abbreviations ‘dir.’ and ‘inc.’, and yield results that are indicated in the equivalence matrices and graphs by the same terms. In some cases, the paths are identical.

The ‘direct’ differences are the temperature differences between the realizations of a pair of laboratories that were obtained using the shortest available path linking those laboratories. In some cases, this means that the laboratories are compared using measurements made on the same SPRT or SPRTs. Where necessary, however, NIST or NML serves as an intermediary, linking the measurements of the two laboratories.

The ‘inclusive’ differences are those in which all of the data obtained by the pair of laboratories involved are used in the calculations of their pair-wise temperature differences and their associated uncertainties. In inclusive differences, whether or not there is a direct linkage between the laboratories, NIST (and possibly also NML) may be used as an intermediary so that the temperature differences can be computed using all relevant data. For the inclusive path, NIST was selected as the intermediate laboratory because, overall, that results in a minimum number of intermediate laboratories in the pair-wise differences.

The expanded uncertainty, UL (95%), listed in the matrices of equivalence and used in the ‘no baseline’ graphs of approximate equivalence is derived for each laboratory by combining the Type A standard uncertainty for the smallest number of measurements (n) across SPRTs and the Type B standard uncertainty for each fixed point. The uncertainty UL (95%) is only for the respective laboratory with no contribution from the other laboratories.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K

Measurand : Resistance ratio, W, at fixed-point temperature

Key comparison reference value:
The contents of the Appendix B of the MRA for CCT Key Comparison 3 were approved by a majority vote of the CCT. Due to the myriad of technical problems, it was not possible to reach a consensus on whether 1) to use a key comparison reference value, or 2) not to use a key comparison value. The viewpoints of the NMI participants are contained within the CCT-K3 Final Report (NIST Technical Note 1450).
The CCT agrees by consensus that the absence of a key comparison reference value in this Appendix does not preclude the use of a key comparison refrence value in other key comparisons.

The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = Ti - Tj and the expanded uncertainty (95%) Uij of Dij, both expressed in mK.

The pair-wise temperature differences and their associated uncertainties were calculated for the various laboratories by two paths. Those paths are indicated by the terms ‘direct’ and ‘inclusive’, or the corresponding abbreviations ‘dir.’ and ‘inc.’, and yield results that are indicated in the equivalence matrices and graphs by the same terms. In some cases, the paths are identical.

The ‘direct’ differences are the temperature differences between the realizations of a pair of laboratories that were obtained using the shortest available path linking those laboratories. In some cases, this means that the laboratories are compared using measurements made on the same SPRT or SPRTs. Where necessary, however, NIST or NML serves as an intermediary, linking the measurements of the two laboratories.

The ‘inclusive’ differences are those in which all of the data obtained by the pair of laboratories involved are used in the calculations of their pair-wise temperature differences and their associated uncertainties. In inclusive differences, whether or not there is a direct linkage between the laboratories, NIST (and possibly also NML) may be used as an intermediary so that the temperature differences can be computed using all relevant data. For the inclusive path, NIST was selected as the intermediate laboratory because, overall, that results in a minimum number of intermediate laboratories in the pair-wise differences.

The expanded uncertainty, UL (95%), listed in the matrices of equivalence and used in the ‘no baseline’ graphs of approximate equivalence is derived for each laboratory by combining the Type A standard uncertainty for the smallest number of measurements (n) across SPRTs and the Type B standard uncertainty for each fixed point. The uncertainty UL (95%) is only for the respective laboratory with no contribution from the other laboratories.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K

Measurand : Resistance ratio, W, at fixed-point temperature

Key comparison reference value:
The contents of the Appendix B of the MRA for CCT Key Comparison 3 were approved by a majority vote of the CCT. Due to the myriad of technical problems, it was not possible to reach a consensus on whether 1) to use a key comparison reference value, or 2) not to use a key comparison value. The viewpoints of the NMI participants are contained within the CCT-K3 Final Report (NIST Technical Note 1450).
The CCT agrees by consensus that the absence of a key comparison reference value in this Appendix does not preclude the use of a key comparison refrence value in other key comparisons.

The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = Ti - Tj and the expanded uncertainty (95%) Uij of Dij, both expressed in mK.

The pair-wise temperature differences and their associated uncertainties were calculated for the various laboratories by two paths. Those paths are indicated by the terms ‘direct’ and ‘inclusive’, or the corresponding abbreviations ‘dir.’ and ‘inc.’, and yield results that are indicated in the equivalence matrices and graphs by the same terms. In some cases, the paths are identical.

The ‘direct’ differences are the temperature differences between the realizations of a pair of laboratories that were obtained using the shortest available path linking those laboratories. In some cases, this means that the laboratories are compared using measurements made on the same SPRT or SPRTs. Where necessary, however, NIST or NML serves as an intermediary, linking the measurements of the two laboratories.

The ‘inclusive’ differences are those in which all of the data obtained by the pair of laboratories involved are used in the calculations of their pair-wise temperature differences and their associated uncertainties. In inclusive differences, whether or not there is a direct linkage between the laboratories, NIST (and possibly also NML) may be used as an intermediary so that the temperature differences can be computed using all relevant data. For the inclusive path, NIST was selected as the intermediate laboratory because, overall, that results in a minimum number of intermediate laboratories in the pair-wise differences.

The expanded uncertainty, UL (95%), listed in the matrices of equivalence and used in the ‘no baseline’ graphs of approximate equivalence is derived for each laboratory by combining the Type A standard uncertainty for the smallest number of measurements (n) across SPRTs and the Type B standard uncertainty for each fixed point. The uncertainty UL (95%) is only for the respective laboratory with no contribution from the other laboratories.

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K

Measurand : Resistance ratio, W, at fixed-point temperature

Key comparison reference value:
The contents of the Appendix B of the MRA for CCT Key Comparison 3 were approved by a majority vote of the CCT. Due to the myriad of technical problems, it was not possible to reach a consensus on whether 1) to use a key comparison reference value, or 2) not to use a key comparison value. The viewpoints of the NMI participants are contained within the CCT-K3 Final Report (NIST Technical Note 1450).
The CCT agrees by consensus that the absence of a key comparison reference value in this Appendix does not preclude the use of a key comparison refrence value in other key comparisons.

The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = Ti - Tj and the expanded uncertainty (95%) Uij of Dij, both expressed in mK.

The pair-wise temperature differences and their associated uncertainties were calculated for the various laboratories by two paths. Those paths are indicated by the terms ‘direct’ and ‘inclusive’, or the corresponding abbreviations ‘dir.’ and ‘inc.’, and yield results that are indicated in the equivalence matrices and graphs by the same terms. In some cases, the paths are identical.

The ‘direct’ differences are the temperature differences between the realizations of a pair of laboratories that were obtained using the shortest available path linking those laboratories. In some cases, this means that the laboratories are compared using measurements made on the same SPRT or SPRTs. Where necessary, however, NIST or NML serves as an intermediary, linking the measurements of the two laboratories.

The ‘inclusive’ differences are those in which all of the data obtained by the pair of laboratories involved are used in the calculations of their pair-wise temperature differences and their associated uncertainties. In inclusive differences, whether or not there is a direct linkage between the laboratories, NIST (and possibly also NML) may be used as an intermediary so that the temperature differences can be computed using all relevant data. For the inclusive path, NIST was selected as the intermediate laboratory because, overall, that results in a minimum number of intermediate laboratories in the pair-wise differences.

The expanded uncertainty, UL (95%), listed in the matrices of equivalence and used in the ‘no baseline’ graphs of approximate equivalence is derived for each laboratory by combining the Type A standard uncertainty for the smallest number of measurements (n) across SPRTs and the Type B standard uncertainty for each fixed point. The uncertainty UL (95%) is only for the respective laboratory with no contribution from the other laboratories.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K

Measurand : Resistance ratio, W, at fixed-point temperature

Key comparison reference value:
The contents of the Appendix B of the MRA for CCT Key Comparison 3 were approved by a majority vote of the CCT. Due to the myriad of technical problems, it was not possible to reach a consensus on whether 1) to use a key comparison reference value, or 2) not to use a key comparison value. The viewpoints of the NMI participants are contained within the CCT-K3 Final Report (NIST Technical Note 1450).
The CCT agrees by consensus that the absence of a key comparison reference value in this Appendix does not preclude the use of a key comparison refrence value in other key comparisons.

The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = Ti - Tj and the expanded uncertainty (95%) Uij of Dij, both expressed in mK.

The pair-wise temperature differences and their associated uncertainties were calculated for the various laboratories by two paths. Those paths are indicated by the terms ‘direct’ and ‘inclusive’, or the corresponding abbreviations ‘dir.’ and ‘inc.’, and yield results that are indicated in the equivalence matrices and graphs by the same terms. In some cases, the paths are identical.

The ‘direct’ differences are the temperature differences between the realizations of a pair of laboratories that were obtained using the shortest available path linking those laboratories. In some cases, this means that the laboratories are compared using measurements made on the same SPRT or SPRTs. Where necessary, however, NIST or NML serves as an intermediary, linking the measurements of the two laboratories.

The ‘inclusive’ differences are those in which all of the data obtained by the pair of laboratories involved are used in the calculations of their pair-wise temperature differences and their associated uncertainties. In inclusive differences, whether or not there is a direct linkage between the laboratories, NIST (and possibly also NML) may be used as an intermediary so that the temperature differences can be computed using all relevant data. For the inclusive path, NIST was selected as the intermediate laboratory because, overall, that results in a minimum number of intermediate laboratories in the pair-wise differences.

The expanded uncertainty, UL (95%), listed in the matrices of equivalence and used in the ‘no baseline’ graphs of approximate equivalence is derived for each laboratory by combining the Type A standard uncertainty for the smallest number of measurements (n) across SPRTs and the Type B standard uncertainty for each fixed point. The uncertainty UL (95%) is only for the respective laboratory with no contribution from the other laboratories.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K

Measurand : Resistance ratio, W, at fixed-point temperature

Key comparison reference value:
The contents of the Appendix B of the MRA for CCT Key Comparison 3 were approved by a majority vote of the CCT. Due to the myriad of technical problems, it was not possible to reach a consensus on whether 1) to use a key comparison reference value, or 2) not to use a key comparison value. The viewpoints of the NMI participants are contained within the CCT-K3 Final Report (NIST Technical Note 1450).
The CCT agrees by consensus that the absence of a key comparison reference value in this Appendix does not preclude the use of a key comparison refrence value in other key comparisons.

The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = Ti - Tj and the expanded uncertainty (95%) Uij of Dij, both expressed in mK.

The pair-wise temperature differences and their associated uncertainties were calculated for the various laboratories by two paths. Those paths are indicated by the terms ‘direct’ and ‘inclusive’, or the corresponding abbreviations ‘dir.’ and ‘inc.’, and yield results that are indicated in the equivalence matrices and graphs by the same terms. In some cases, the paths are identical.

The ‘direct’ differences are the temperature differences between the realizations of a pair of laboratories that were obtained using the shortest available path linking those laboratories. In some cases, this means that the laboratories are compared using measurements made on the same SPRT or SPRTs. Where necessary, however, NIST or NML serves as an intermediary, linking the measurements of the two laboratories.

The ‘inclusive’ differences are those in which all of the data obtained by the pair of laboratories involved are used in the calculations of their pair-wise temperature differences and their associated uncertainties. In inclusive differences, whether or not there is a direct linkage between the laboratories, NIST (and possibly also NML) may be used as an intermediary so that the temperature differences can be computed using all relevant data. For the inclusive path, NIST was selected as the intermediate laboratory because, overall, that results in a minimum number of intermediate laboratories in the pair-wise differences.

The expanded uncertainty, UL (95%), listed in the matrices of equivalence and used in the ‘no baseline’ graphs of approximate equivalence is derived for each laboratory by combining the Type A standard uncertainty for the smallest number of measurements (n) across SPRTs and the Type B standard uncertainty for each fixed point. The uncertainty UL (95%) is only for the respective laboratory with no contribution from the other laboratories.

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Aluminum Freezing Point, 933.473 K

Measurand : Resistance ratio, W, at fixed-point temperature

Key comparison reference value:
The contents of the Appendix B of the MRA for CCT Key Comparison 3 were approved by a majority vote of the CCT. Due to the myriad of technical problems, it was not possible to reach a consensus on whether 1) to use a key comparison reference value, or 2) not to use a key comparison value. The viewpoints of the NMI participants are contained within the CCT-K3 Final Report (NIST Technical Note 1450).
The CCT agrees by consensus that the absence of a key comparison reference value in this Appendix does not preclude the use of a key comparison refrence value in other key comparisons.

The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = Ti - Tj and the expanded uncertainty (95%) Uij of Dij, both expressed in mK.

The pair-wise temperature differences and their associated uncertainties were calculated for the various laboratories by two paths. Those paths are indicated by the terms ‘direct’ and ‘inclusive’, or the corresponding abbreviations ‘dir.’ and ‘inc.’, and yield results that are indicated in the equivalence matrices and graphs by the same terms. In some cases, the paths are identical.

The ‘direct’ differences are the temperature differences between the realizations of a pair of laboratories that were obtained using the shortest available path linking those laboratories. In some cases, this means that the laboratories are compared using measurements made on the same SPRT or SPRTs. Where necessary, however, NIST or NML serves as an intermediary, linking the measurements of the two laboratories.

The ‘inclusive’ differences are those in which all of the data obtained by the pair of laboratories involved are used in the calculations of their pair-wise temperature differences and their associated uncertainties. In inclusive differences, whether or not there is a direct linkage between the laboratories, NIST (and possibly also NML) may be used as an intermediary so that the temperature differences can be computed using all relevant data. For the inclusive path, NIST was selected as the intermediate laboratory because, overall, that results in a minimum number of intermediate laboratories in the pair-wise differences.

The expanded uncertainty, UL (95%), listed in the matrices of equivalence and used in the ‘no baseline’ graphs of approximate equivalence is derived for each laboratory by combining the Type A standard uncertainty for the smallest number of measurements (n) across SPRTs and the Type B standard uncertainty for each fixed point. The uncertainty UL (95%) is only for the respective laboratory with no contribution from the other laboratories.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K

Measurand : Resistance ratio, W, at fixed-point temperature
No laboratory individual measurements are available for this comparison. Please click on Equivalence statements.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K

Measurand : Resistance ratio, W, at fixed-point temperature
No laboratory individual measurements are available for this comparison. Please click on Equivalence statements.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K

Measurand : Resistance ratio, W, at fixed-point temperature
No laboratory individual measurements are available for this comparison. Please click on Equivalence statements.

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K

Measurand : Resistance ratio, W, at fixed-point temperature
No laboratory individual measurements are available for this comparison. Please click on Equivalence statements.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K

Measurand : Resistance ratio, W, at fixed-point temperature
No laboratory individual measurements are available for this comparison. Please click on Equivalence statements.

CCT-K3, CCT-K3.1 and CCT-K3.2

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K

Measurand : Resistance ratio, W, at fixed-point temperature
No laboratory individual measurements are available for this comparison. Please click on Equivalence statements.

Realizations of the ITS-90 from 83.8058 K to 933.473 K

NOMINAL TEMPERATURE : Aluminum Freezing Point, 933.473 K

Measurand : Resistance ratio, W, at fixed-point temperature
No laboratory individual measurements are available for this comparison. Please click on Equivalence statements.