CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~ 20 kPa
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
expressed in mm^{2}
Red diamonds: participants in CCM.P-K6
Green triangles: participants in APMP.M.P-K6 only
Blue circles: participants in APMP.M.P-K6.1 only
Orange squares: participants in EURAMET.M.P-K8
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL PRESSURE : p = 50 kPa
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
expressed in mm^{2}
Red diamonds: participants in CCM.P-K6
Orange squares: participants in EURAMET.M.P-K8
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~70 kPa
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
expressed in mm^{2} for participants in CCM.P-K6
From 1st March 2009, NMi-VSL has been named VSL
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
expressed in mm^{2} for participants in EURAMET.M.P-K8
CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~ 100 kPa
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
expressed in mm^{2}
Red diamonds: participants in CCM.P-K6
Green triangles: participants in APMP.M.P-K6 only
Blue circles: participants in APMP.M.P-K6.1 only
Orange squares: partcipants in EURAMET.M.P-K8
CCM.P-K2 and EURAMET.M.P-K8
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 20 kPa
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 50 kPa
CCM.P-K2 and EURAMET.M.P-K8
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
APMP.M.P-K9
Degrees of equivalence represented by D_{i}_{ }= (x_{I} - x_{R}) and its expanded uncertainty U_{i}_{ }at a 95 % level of confidence, both expressed in Pa.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 70 kPa
CCM.P-K2 and EURAMET.M.P-K8
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
APMP.M.P-K9
Degrees of equivalence represented by D_{i}_{ }= (x_{I} - x_{R}) and its expanded uncertainty U_{i}_{ }at a 95 % level of confidence, both expressed in Pa.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 100 kPa
CCM.P-K2 and EURAMET.M.P-K8
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
APMP.M.P-K9
Degrees of equivalence represented by D_{i}_{ }= (x_{I} - x_{R}) and its expanded uncertainty U_{i}_{ }at a 95 % level of confidence, both expressed in Pa.
CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~ 20 kPa
Degrees of equivalence relative to the CCM.P-K6 key comparison reference value, expressed in mm^{2}
* participants in APMP.M.P-K6 only
**participants in APMP.M.P-K6.1 only
Orange : participants in EURAMET.M.P-K8
Matrix of equivalence inside APMP.M.P-K6.1:
Lab i | D_{i} | U_{i} |
/ mm^{2} | / mm^{2} | |
VSL | 0.0010 | 0.011 |
METAS | -0.0261 | 0.050 |
PTB | 0.0000 | 0.0041 |
NIST | -0.0011 | 0.0026 |
NIM | 0.0018 | 0.0032 |
NPL | -0.0005 | 0.0048 |
NRC | 0.0002 | 0.0027 |
The matrices of equivalence computed inside key comparisons CCM.P-K6, APMP.M.P-K6 and APMP.M.P-K6.1 are available in Summary Results (.PDF file).
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL PRESSURE : p = 50 kPa
Lab i | D_{i} | U_{i} |
/ mm^{2} | / mm^{2} | |
VSL | 0.0012 | 0.011 |
METAS | -0.0167 | 0.026 |
PTB | 0.0005 | 0.0032 |
NIST | -0.0013 | 0.0026 |
NIM | 0.0000 | 0.0032 |
NPL | 0.0000 | 0.0025 |
NRC | -0.0010 | 0.0025 |
METAS* | -0.0020 | 0.0061 |
LNE* | -0.0041 | 0.0055 |
PTB* | 0.0006 | 0.0033 |
NSAI NML* | -0.0018 | 0.0117 |
MIKES* | -0.0043 | 0.0069 |
VSL* | -0.0001 | 0.0100 |
NIS* | -0.0049 | 0.0078 |
INRIM* | -0.0033 | 0.0073 |
UME* | -0.0030 | 0.0059 |
EIM* | -0.0038 | 0.0086 |
CMI* | -0.0026 | 0.0061 |
BEV* | -0.0046 | 0.0098 |
MIRS/IMT/LMT* | -0.0027 | 0.0053 |
HMI/FSB-LPM* | 0.0002 | 0.0108 |
IMBIH* | -0.0018 | 0.0138 |
CEM* | -0.0056 | 0.0107 |
KRISS* | -0.0024 | 0.0077 |
INM(RO)* | -0.0038 | 0.0098 |
FORCE* | -0.0185 | 0.0174 |
IPQ* | 0.0021 | 0.0104 |
MKEH* | -0.0099 | 0.0086 |
MCCAA-SMI* | -0.0022 | 0.0060 |
*Participants in EURAMET.M.P-K8
Results are presented under A4 printable format in Summary Results (.PDF file).
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~ 70 kPa
Matrix of equivalence inside CCM.P-K6:
Lab i | D_{i} | U_{i} |
/ mm^{2} | / mm^{2} | |
VSL | 0.0010 | 0.011 |
METAS | -0.0158 | 0.018 |
PTB | 0.0010 | 0.0037 |
NIST | -0.0014 | 0.0026 |
NIM | 0.0009 | 0.0032 |
NPL | 0.0000 | 0.0022 |
NRC | -0.0010 | 0.0024 |
Degrees of equivalence relative to the CCM.P-K6 key comparison reference value, expressed in mm^{2} for the participants in EURAMET.M.P-K8.
Orange : Participants in EURAMET.M.P-K8
Results are presented under A4 printable format in Summary Results (.PDF file).
CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~ 100 kPa
Degrees of equivalence relative to the CCM.P-K6 key comparison reference value, expressed in mm^{2}
* participants in APMP.M.P-K6 only
**participants in APMP.M.P-K6.1 only
Orange: participants in EURAMET.M.P-K8
Matrix of equivalence inside APMP.M.P-K6.1:
Lab i | D_{i} | U_{i} |
/ mm^{2} | / mm^{2} | |
VSL | 0.0005 | 0.011 |
METAS | -0.0142 | 0.016 |
PTB | 0.0008 | 0.0032 |
NIST | -0.0016 | 0.0027 |
NIM | 0.0012 | 0.0033 |
NPL | 0.0000 | 0.0022 |
NRC | -0.0014 | 0.0026 |
The matrices of equivalence computed inside key comparisons CCM.P-K6, APMP.M.P-K6 and APMP.M.P-K6.1 are available in Summary Results (.PDF file).
CCM.P-K2 and EURAMET.M.P-K8
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 20 kPa
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 50 kPa
CCM.P-K2 and EURAMET.M.P-K8
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
APMP.M.P-K9
Degrees of equivalence represented by D_{i}_{ }= (x_{I} - x_{R}) and its expanded uncertainty U_{i}_{ }at a 95 % level of confidence, both expressed in Pa.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 70 kPa
CCM.P-K2 and EURAMET.M.P-K8
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
APMP.M.P-K9
Degrees of equivalence represented by D_{i}_{ }= (x_{I} - x_{R}) and its expanded uncertainty U_{i}_{ }at a 95 % level of confidence, both expressed in Pa.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 100 kPa
CCM.P-K2 and EURAMET.M.P-K8
Degrees of equivalence represented by D_{i} = (x_{I }- x_{R}) and its expanded uncertainty U_{i} at a 95 % level of confidence, both expressed in mm^{2}.
APMP.M.P-K9
Degrees of equivalence represented by D_{i}_{ }= (x_{I} - x_{R}) and its expanded uncertainty U_{i}_{ }at a 95 % level of confidence, both expressed in Pa.
Metrology area, Sub-field | Mass and related quantities, Pressure |
Description | Pressure measurements (gauge and absolute mode) |
Time of measurements | 2009 - 2012 |
Status | Approved for equivalence |
Final Reports of the comparisons | |
Measurand | Effective area of a piston-cylinder unit: 10^{-3} m^{2} |
Parameters | Pressure: 25 kPa to 200 kPa |
Transfer device | Piston-cylinder unit |
Comparison type | Key Comparison |
Consultative Committee | CCM (Consultative Committee for Mass and Related Quantities) |
Conducted by | EURAMET (European Association of National Metrology Institutes) |
RMO Internal Identifier | EURAMET Project No 1041 |
Comments | Results published on 12 September 2016 EURAMET.M.P-K8 results are linked to those of CCM.P-K6 (Gauge pressure) and CCM.P-K2 (Absolute pressure) |
Pilot institute |
METAS
Federal Institute of Metrology Switzerland |
Contact person | C. Wüthrich +41 (0) 31 32 33 423 |
Pilot laboratory | |
---|---|
METAS |
Federal Institute of Metrology, Switzerland, EURAMET |
BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |
CEM |
Centro Español de Metrologia, Spain, EURAMET |
CMI |
Czech Metrology Institute, Czechia, EURAMET |
EIM |
Hellenic Institute of Metrology, Greece, EURAMET |
FORCE |
FORCE Technology, Denmark, EURAMET |
HMI/FSB-LPM |
FSB - Laboratory for Process Measurements, Croatia, EURAMET |
IMBIH |
Institute of Metrology of Bosnia and Herzegovina, Bosnia and Herzegovina, EURAMET |
INM |
National Institute of Metrology, Romania, EURAMET |
INRIM |
Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET |
IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |
KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
LNE |
Laboratoire national de métrologie et d'essais, France, EURAMET |
MCCAA-SMI |
Malta Competition and Consumer Affairs Authority - Standards and Metrology Institute, Malta, EURAMET |
MIKES |
VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus, Finland, EURAMET |
MIRS/IMT/LMT |
MIRS/Institute of Metals and Technology/Laboratory of Pressure Metrology, Slovenia, EURAMET |
MKEH |
Hungarian Trade Licensing Office; now BFKH, Hungary, EURAMET |
NIS |
National Institute for Standards, Egypt, AFRIMETS |
NSAI NML |
NSAI National Metrology Laboratory, Ireland, EURAMET |
PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |
VSL |
VSL, Netherlands, EURAMET |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~ 20 kPa
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value. |
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}: D_{i} = (x_{i} - x_{R}) and U_{i} = 2(u_{i}^{2} + u_{R}^{2})^{1/2}, its expanded uncertainty (k = 2). |
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij} = D_{i} - D_{j} = (x_{i} - x_{j}) and U_{ij} = 2(u_{i}^{2} + u_{j}^{2})^{1/2}, its expanded uncertainty (k = 2). |
PTB is the common participant to both key comparisons CCM.P-K6 and APMP.M.P-K6: its results are used to compute the linkage as explained in Sections 5.1 and 5.2 of the APMP.M.P-K6 Final Report.
Degrees of equivalence relative to the CCM.P-K6 key comparison reference value are obtained for laboratories having participated in APMP.M.P-K6 only, as explained in Section 5.3 of the APMP.M.P-K6 Final Report. They are expressed in mm^{2}. |
Pair-wise degrees of equivalence among pairs of participants in APMP.M.P-K6 are obtained as explained in Section 5.4 of the APMP.M.P-K6 Final Report. They are expressed in relative terms. |
The key comparison APMP.M.P-K6.1 is linked to the CCM.P-K6 key comparison through the APMP.M.P-K6 key comparison.
A*STAR is the common participant to both key comparisons APMP.M.P-K6 and APMP.M.P-K6.1: its results are used to compute the linkage as explained in paragraph 4.1 the APMP.M.P-K6.1 Final Report.
Degrees of equivalence relative to the CCM.P-K6 key comparison reference value are obtained for laboratories having participated in APMP.M.P-K6.1 only, as explained in paragraph 4.2 of the APMP.M.P-K6.1 Final Report. They are expressed in mm^{2}. |
Pair-wise degrees of equivalence among pairs of participants in APMP.M.P-K6.1 are obtained as explained in paragraph 4.3 of the APMP.M.P-K6.1 Final Report. They are expressed in relative terms. |
PTB and VSL provide the link between key comparisons CCM.P-K6 and EURAMET.M.P-K8 for the following nominal pressures: 25 kPa, 50 kPa, 75 kPa and 100 kPa.
The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The measurements of EURAMET.M.P-K8 at the nominal pressure 25 kPa are linked with the averaged value of the 20 kPa and 30 kPa measurements of the CCM comparison, and those at the nominal pressure 75 kPa are linked with the averaged value of the 70 kPa and 80 kPa measurements of the CCM comparison.
Therefore, the degrees of equivalence of the laboratories having participated in EURAMET.M.P-K8 for 25 kPa and 75 kPa are shown on a different graph from the ones for the participants in CCM.P-K6.
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 50 kPa
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value. |
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}: D_{i} = (x_{i} - x_{R}) and U_{i} = 2(u_{i}^{2} + u_{R}^{2})^{1/2}, its expanded uncertainty (k = 2). |
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij} = D_{i} - D_{j} = (x_{i} - x_{j}) and U_{ij} = 2(u_{i}^{2} + u_{j}^{2})^{1/2}, its expanded uncertainty (k = 2). |
PTB and VSL provide the link between key comparisons CCM.P-K6 and EURAMET.M.P-K8 for the following nominal pressures: 25 kPa, 50 kPa, 75 kPa and 100 kPa.
The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The measurements of EURAMET.M.P-K8 at the nominal pressure 25 kPa are linked with the averaged value of the 20 kPa and 30 kPa measurements of the CCM comparison, and those at the nominal pressure 75 kPa are linked with the averaged value of the 70 kPa and 80 kPa measurements of the CCM comparison.
Therefore, the degrees of equivalence of the laboratories having participated in EURAMET.M.P-K8 for 25 kPa and 75 kPa are shown on a different graph from the ones for the participants in CCM.P-K6.
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 70 kPa
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value. |
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}: D_{i} = (x_{i} - x_{R}) and U_{i} = 2(u_{i}^{2} + u_{R}^{2})^{1/2}, its expanded uncertainty (k = 2). |
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij} = D_{i} - D_{j} = (x_{i} - x_{j}) and U_{ij} = 2(u_{i}^{2} + u_{j}^{2})^{1/2}, its expanded uncertainty (k = 2). |
PTB and VSL provide the link between key comparisons CCM.P-K6 and EURAMET.M.P-K8 for the following nominal pressures: 25 kPa, 50 kPa, 75 kPa and 100 kPa.
The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The measurements of EURAMET.M.P-K8 at the nominal pressure 25 kPa are linked with the averaged value of the 20 kPa and 30 kPa measurements of the CCM comparison, and those at the nominal pressure 75 kPa are linked with the averaged value of the 70 kPa and 80 kPa measurements of the CCM comparison.
Therefore, the degrees of equivalence of the laboratories having participated in EURAMET.M.P-K8 for 25 kPa and 75 kPa are shown on a different graph from the ones for the participants in CCM.P-K6.
CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p ~ 100 kPa
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value. |
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}: D_{i} = (x_{i} - x_{R}) and U_{i} = 2(u_{i}^{2} + u_{R}^{2})^{1/2}, its expanded uncertainty (k = 2). |
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij} = D_{i} - D_{j} = (x_{i} - x_{j}) and U_{ij} = 2(u_{i}^{2} + u_{j}^{2})^{1/2}, its expanded uncertainty (k = 2). |
PTB is the common participant to both key comparisons CCM.P-K6 and APMP.M.P-K6: its results are used to compute the linkage as explained in Sections 5.1 and 5.2 of the APMP.M.P-K6 Final Report.
Degrees of equivalence relative to the CCM.P-K6 key comparison reference value are obtained for laboratories having participated in APMP.M.P-K6 only, as explained in Section 5.3 of the APMP.M.P-K6 Final Report. They are expressed in mm^{2}. |
Pair-wise degrees of equivalence among pairs of participants in APMP.M.P-K6 are obtained as explained in Section 5.4 of the APMP.M.P-K6 Final Report. They are expressed in relative terms. |
The key comparison APMP.M.P-K6.1 is linked to the CCM.P-K6 key comparison through the APMP.M.P-K6 key comparison.
A*STAR is the common participant to both key comparisons APMP.M.P-K6 and APMP.M.P-K6.1: its results are used to compute the linkage as explained in paragraph 4.1 the APMP.M.P-K6.1 Final Report.
Degrees of equivalence relative to the CCM.P-K6 key comparison reference value are obtained for laboratories having participated in APMP.M.P-K6.1 only, as explained in paragraph 4.2 of the APMP.M.P-K6.1 Final Report. They are expressed in mm^{2}. |
Pair-wise degrees of equivalence among pairs of participants in APMP.M.P-K6.1 are obtained as explained in paragraph 4.3 of the APMP.M.P-K6.1 Final Report. They are expressed in relative terms. |
PTB and VSL provide the link between key comparisons CCM.P-K6 and EURAMET.M.P-K8 for the following nominal pressures: 25 kPa, 50 kPa, 75 kPa and 100 kPa.
The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The measurements of EURAMET.M.P-K8 at the nominal pressure 25 kPa are linked with the averaged value of the 20 kPa and 30 kPa measurements of the CCM comparison, and those at the nominal pressure 75 kPa are linked with the averaged value of the 70 kPa and 80 kPa measurements of the CCM comparison.
Therefore, the degrees of equivalence of the laboratories having participated in EURAMET.M.P-K8 for 25 kPa and 75 kPa are shown on a different graph from the ones for the participants in CCM.P-K6.
CCM.P-K2 and EURAMET.M.P-K8
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 20 kPa
CCM.P-K2
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value.
x_{R} = 335.744 8 mm^{2}
u_{R} = 0.001 7 mm^{2}
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}:
D_{i} = (x_{i} - x_{R}) and U_{i}_{ }= 2(u_{i}^{2} + u_{R}^{2} + u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). u_{T} is the uncertainty due to the instability of the transfer standard: u_{T} = 0.002 5 mm^{2} (see page 15 of the Final Report).
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij}_{ }= D_{i}_{ }- D_{j} = (xi_{ }- x_{j}) and U_{ij}_{ }= 2(u_{i}^{2} + u_{j}^{2} + 2u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). Effects of correlation should be taken into consideration.
Linking EURAMET.M.P-K8 to CCM.P-K2
PTB and INRiM provides the link between key comparisons CCM.P-K2 and EURAMET.M.P-K8, having participated in both comparisons. The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The degrees of equivalence of the laboratories having participated in EURAMET.M.P-K4.2010, with respect to the CCM.P-K2 key comparison reference value, are expressed in Pa, and therefore are shown on a different graph from the one for the participants in CCM.P-K2.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 50 kPa
CCM.P-K2
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value.
x_{R} = 335.744 0 mm^{2}
u_{R} = 0.000 8 mm^{2}
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}:
D_{i} = (x_{i} - x_{R}) and U_{i}_{ }= 2(u_{i}^{2} + u_{R}^{2} + u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). u_{T} is the uncertainty due to the instability of the transfer standard: u_{T} = 0.002 5 mm^{2} (see page 15 of the Final Report).
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij}_{ }= D_{i}_{ }- D_{j} = (xi_{ }- x_{j}) and U_{ij}_{ }= 2(u_{i}^{2} + u_{j}^{2} + 2u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). Effects of correlation should be taken into consideration.
Linking EURAMET.M.P-K8 to CCM.P-K2
PTB and INRiM provides the link between key comparisons CCM.P-K2 and EURAMET.M.P-K8, having participated in both comparisons. The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The degrees of equivalence of the laboratories having participated in EURAMET.M.P-K4.2010, with respect to the CCM.P-K2 key comparison reference value, are expressed in Pa, and therefore are shown on a different graph from the one for the participants in CCM.P-K2.
Linking APMP.M.P-K9 to CCM.P-K2
NMIA and PTB provides the link between key comparisons CCM.P-K2 and APMP.M.P-K9, having participated in both comparisons. The linkage process is described in Section 6 of the APMP.M.P-K9 Final Report.
The degrees of equivalence of the laboratories having participated in APMP.M.P-K9, with respect to the CCM.P-K2 key comparison reference value, are expressed in Pa, and therefore are shown on a different graph from the one for the participants in CCM.P-K2.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 70 kPa
CCM.P-K2
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value.
x_{R} = 335.745 3 mm^{2}
u_{R} = 0.000 5 mm^{2}
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}:
D_{i} = (x_{i} - x_{R}) and U_{i}_{ }= 2(u_{i}^{2} + u_{R}^{2} + u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). u_{T} is the uncertainty due to the instability of the transfer standard: u_{T} = 0.002 5 mm^{2} (see page 15 of the Final Report).
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij}_{ }= D_{i}_{ }- D_{j} = (xi_{ }- x_{j}) and U_{ij}_{ }= 2(u_{i}^{2} + u_{j}^{2} + 2u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). Effects of correlation should be taken into consideration.
Linking EURAMET.M.P-K8 to CCM.P-K2
PTB and INRiM provides the link between key comparisons CCM.P-K2 and EURAMET.M.P-K8, having participated in both comparisons. The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The degrees of equivalence of the laboratories having participated in EURAMET.M.P-K4.2010, with respect to the CCM.P-K2 key comparison reference value, are expressed in Pa, and therefore are shown on a different graph from the one for the participants in CCM.P-K2.
Linking APMP.M.P-K9 to CCM.P-K2
NMIA and PTB provides the link between key comparisons CCM.P-K2 and APMP.M.P-K9, having participated in both comparisons. The linkage process is described in Section 6 of the APMP.M.P-K9 Final Report.
The degrees of equivalence of the laboratories having participated in APMP.M.P-K9, with respect to the CCM.P-K2 key comparison reference value, are expressed in Pa, and therefore are shown on a different graph from the one for the participants in CCM.P-K2.
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 100 kPa
CCM.P-K2
The key comparison reference value, x_{R}, is calculated as the median of the participants' values. The standard uncertainty of the key comparison reference value, u_{R}, is calculated by the formula u_{R} = 1.858 MAD / (n - 1)^{1/2}, where MAD is the median of absolute deviations from the median, and n is the number of participants contributing to the reference value.
x_{R} = 335.745 1 mm^{2}
u_{R} = 0.000 7 mm^{2}
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms expressed in mm^{2}:
D_{i} = (x_{i} - x_{R}) and U_{i}_{ }= 2(u_{i}^{2} + u_{R}^{2} + u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). u_{T} is the uncertainty due to the instability of the transfer standard: u_{T} = 0.002 5 mm^{2} (see page 15 of the Final Report).
The degree of equivalence between two laboratories i and j is given by a pair of terms expressed in mm^{2}: D_{ij}_{ }= D_{i}_{ }- D_{j} = (xi_{ }- x_{j}) and U_{ij}_{ }= 2(u_{i}^{2} + u_{j}^{2} + 2u_{T}^{2})^{1/2}, its expanded uncertainty (k = 2). Effects of correlation should be taken into consideration.
Linking EURAMET.M.P-K8 to CCM.P-K2
PTB and INRiM provides the link between key comparisons CCM.P-K2 and EURAMET.M.P-K8, having participated in both comparisons. The linkage process is described in Section 11 of the EURAMET.M.P-K8 Final Report.
The degrees of equivalence of the laboratories having participated in EURAMET.M.P-K4.2010, with respect to the CCM.P-K2 key comparison reference value, are expressed in Pa, and therefore are shown on a different graph from the one for the participants in CCM.P-K2.
Linking APMP.M.P-K9 to CCM.P-K2
NMIA and PTB provides the link between key comparisons CCM.P-K2 and APMP.M.P-K9, having participated in both comparisons. The linkage process is described in Section 6 of the APMP.M.P-K9 Final Report.
The degrees of equivalence of the laboratories having participated in APMP.M.P-K9, with respect to the CCM.P-K2 key comparison reference value, are expressed in Pa, and therefore are shown on a different graph from the one for the participants in CCM.P-K2.
CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 20 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
u_{i} : combined standard uncertainty of x_{i}
Lab i | x_{i} / mm^{2} |
u_{i} / x_{i} / 10^{-6} |
Date of measurement |
VSL |
335.745 4 |
16 |
Aug-Sep 1998 |
METAS |
335.718 3 |
74 |
Nov-Dec 1998 |
PTB | 335.744 4 | 5.6 | Feb-Mar 1999 |
NIST | 335.743 3 | 3.1 | Sep-Oct 1999 |
NIM |
335.746 2 |
4.3 |
Nov-Dec 1999 |
NPL | 335.743 9 | 6.8 | Aug-Sep 2000 |
NRC | 335.744 6 | 3.4 | Jul-Sep 2001 |
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 21.4 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
u_{i} : combined standard uncertainty of x_{i}
Lab i | x_{i} / mm^{2} |
u_{i} / x_{i} / 10^{-6} |
Date of measurement |
NPLI |
335.737 3 |
15.80 |
Oct 1998 |
KRISS |
335.742 1 |
11.10 |
Apr 1999 |
NMIA | 335.749 7 | 12.60 | Feb 2001 |
NMIJ | 335.738 8 | 8.80 | Sep 1999 |
PTB |
335.737 6 |
6.40 |
Mar 2001 |
MSL | 335.749 3 | 11.80 | May 1999 |
A*STAR | 335.737 5 | 19.20 | Nov 1998 |
NML-SIRIM |
335.744 8 |
11.40 |
Jan 1999 |
SCL |
335.747 7 |
18.00 |
Jun 1999 |
NMISA |
335.740 7 |
14.60 |
Oct 1999 |
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.75 mm^{2}
NOMINAL PRESSURE : p = 21.4 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
U_{Labi} : relative expanded uncertainty (k =2) of x_{i}
Lab i | x_{i} / mm^{2} |
U_{Lab}_{i} / 10^{-6} |
Date of measurement |
CMS/ITRI |
335.623 5 |
30.2 |
Apr 03 - Apr 04 |
A*STAR |
335.633 9 |
22.0 |
Apr 03 - Apr 04 |
NIMT | 335.635 1 | 18.6 | Apr 03 - Apr 04 |
MEASURAND : Effective area of a piston-cylinder assembly determined in gauge pressure mode
NOMINAL VALUE : 980 mm^{2}
NOMINAL PRESSURE : p = 25 kPa
The laboratory individual measurements of the participants in the key comparison EURAMET.M.P-K8 are given in Table 7 on page 26 of the EURAMET.M.P-K8 Final Report.
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 50 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
u_{i} : combined standard uncertainty of x_{i}
Lab i | x_{i} / mm^{2} |
u_{i} / x_{i} / 10^{-6} |
Date of measurement |
VSL |
335.745 5 |
16 |
Aug-Sep 1998 |
METAS |
335.727 6 |
39 |
Nov-Dec 1998 |
PTB | 335.744 8 | 4.2 | Feb-Mar 1999 |
NIST | 335.743 0 | 3.1 | Sep-Oct 1999 |
NIM |
335.744 3 |
4.2 |
Nov-Dec 1999 |
NPL | 335.744 3 | 3.0 | Aug-Sep 2000 |
NRC | 335.743 3 | 2.9 | Jul-Sep 2001 |
MEASURAND : Effective area of a piston-cylinder assembly determined in gauge pressure mode
NOMINAL VALUE : 980 mm^{2}
NOMINAL PRESSURE : p = 50 kPa
The laboratory individual measurements of the participants in the key comparison EURAMET.M.P-K8 are given in Table 7 on page 26 of the EURAMET.M.P-K8 Final Report.
CCM.P-K6 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 70 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
u_{i} : combined standard uncertainty of x_{i}
Lab i | x_{i} / mm^{2} |
u_{i} / x_{i} / 10^{-6} |
Date of measurement |
VSL |
335.745 3 |
16 |
Aug-Sep 1998 |
METAS |
335.728 5 |
26 |
Nov-Dec 1998 |
PTB | 335.745 3 | 5.0 | Feb-Mar 1999 |
NIST | 335.742 9 | 3.1 | Sep-Oct 1999 |
NIM |
335.745 2 |
4.2 |
Nov-Dec 1999 |
NPL | 335.744 3 | 2.3 | Aug-Sep 2000 |
NRC | 335.743 3 | 2.8 | Jul-Sep 2001 |
MEASURAND : Effective area of a piston-cylinder assembly determined in gauge pressure mode
NOMINAL VALUE : 980 mm^{2}
NOMINAL PRESSURE : p = 75 kPa
The laboratory individual measurements of the participants in the key comparison EURAMET.M.P-K8 are given in Table 7 on page 26 of the EURAMET.M.P-K8 Final Report.
CCM.P-K6, APMP.M.P-K6, APMP.M.P-K6.1 and EURAMET.M.P-K8
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 100 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
u_{i} : combined standard uncertainty of x_{i}
Lab i | x_{i} / mm^{2} |
u_{i} / x_{i} / 10^{-6} |
Date of measurement |
VSL |
335.745 0 |
16 |
Aug-Sep 1998 |
METAS |
335.730 4 |
24 |
Nov-Dec 1998 |
PTB | 335.745 3 | 3.8 | Feb-Mar 1999 |
NIST | 335.742 9 | 3.0 | Sep-Oct 1999 |
NIM |
335.745 7 |
4.1 |
Nov-Dec 1999 |
NPL | 335.744 5 | 1.8 | Aug-Sep 2000 |
NRC | 335.743 1 | 2.7 | Jul-Sep 2001 |
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.7 mm^{2}
NOMINAL PRESSURE : p = 101.2 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
u_{i} : combined standard uncertainty of x_{i}
Lab i | x_{i} / mm^{2} |
u_{i} / x_{i} / 10^{-6} |
Date of measurement |
NPLI |
335.737 7 |
15.80 |
Oct 1998 |
KRISS |
335.739 7 |
11.10 |
Apr 1999 |
NMIA | 335.741 0 | 12.60 | Feb 2001 |
NMIJ | 335.737 8 | 8.80 | Sep 1999 |
PTB |
335.739 7 |
5.90 |
Mar 2001 |
MSL | 335.741 0 | 11.70 | May 1999 |
A*STAR | 335.734 0 | 19.10 | Nov 1998 |
NML-SIRIM |
335.742 0 |
11.40 |
Jan 1999 |
SCL |
335.742 0 |
17.60 |
Jun 1999 |
NMISA |
335.732 0 |
14.60 |
Oct 1999 |
MEASURAND : Effective area of a piston-cylinder assembly
NOMINAL VALUE : 335.75 mm^{2}
NOMINAL PRESSURE : p = 101.4 kPa
x_{i} : result obtained from the mean of measurements by laboratory i
U_{Labi} : relative expanded uncertainty (k =2) of x_{i}
Lab i | x_{i} / mm^{2} |
U_{Lab}_{i} / 10^{-6} |
Date of measurement |
CMS/ITRI |
335.624 4 |
30.0 |
Apr 03 - Apr 04 |
A*STAR |
335.632 2 |
21.2 |
Apr 03 - Apr 04 |
NIMT | 335.636 7 | 17.8 | Apr 03 - Apr 04 |
MEASURAND : Effective area of a piston-cylinder assembly determined in gauge pressure mode
NOMINAL VALUE : 980 mm^{2}
NOMINAL PRESSURE : p = 100 kPa
The laboratory individual measurements of the participants in the key comparison EURAMET.M.P-K8 are given in Table 7 on page 26 of the EURAMET.M.P-K8 Final Report.
CCM.P-K2 and EURAMET.M.P-K8
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 20 kPa
x_{i} results obtained by laboratory i, Lab_{i}
u_{i} combined standard uncertainty of x_{i}
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 50 kPa
x_{i} results obtained by laboratory i, Lab_{i}
u_{i} combined standard uncertainty of x_{i}
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 70 kPa
x_{i} results obtained by laboratory i, Lab_{i}
u_{i} combined standard uncertainty of x_{i}
CCM.P-K2, EURAMET.M.P-K8 and APMP.M.P-K9
MEASURAND Effective area of a piston-cylinder assembly
NOMINAL VALUE 335.7 mm^{2}
NOMINAL PRESSURE 100 kPa
x_{i} results obtained by laboratory i, Lab_{i}
u_{i} combined standard uncertainty of x_{i}