CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 3 Pa
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (95% level of confidence) expressed in Pa
Red diamonds : participants in CCM.P-K4
Pink squares : participants in EUROMET.M.P-K1.a
Blue triangles : participants in EURAMET.M.P-K4.2010
Note: Information not apparent on the graph
- D_{CSIRO-NML }= 0.30 Pa and U_{CSIRO-NML} = 0.05 Pa,
- U_{OMH} = 0.23 Pa
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 10 Pa
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (95% level of confidence) expressed in Pa
Red diamonds : participants in CCM.P-K4
Pink squares : participants in EUROMET.M.P-K1.a
Blue triangles : participants in EURAMET.M.P-K4.2010
Note: Information not apparent on the graph
- D_{CSIRO-NML }= 0.57 Pa and U_{CSIRO-NML} = 0.10 Pa,
- D_{OMH} = 0.40 Pa and U_{OMH} = 0.92 Pa
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 30 Pa
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (95% level of confidence) expressed in Pa
Red diamonds : participants in CCM.P-K4
Pink squares : participants in EUROMET.M.P-K1.a
Blue triangles : participants in EURAMET.M.P-K4.2010
Note: Information not apparent on the graph
- D_{CSIRO-NML }= 0.91 Pa and U_{CSIRO-NML} = 0.15 Pa,
- D_{OMH} = 2.0 Pa and U_{OMH} = 3.2 Pa
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 100 Pa
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (95% level of confidence) expressed in Pa
Red diamonds : participants in CCM.P-K4
Pink squares : participants in EUROMET.M.P-K1.a only
Note: Information not apparent on the graph
D_{OMH} = 2.5 Pa and U_{OMH} = 3.1 Pa
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 300 Pa
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (95% level of confidence) expressed in Pa
Red diamonds : participants in CCM.P-K4
Pink squares : participants in EUROMET.M.P-K1.a only
CNR-IMGC: two different methods
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 1000 Pa
Degrees of equivalence D_{i} and expanded uncertainty U_{i} (95% level of confidence) expressed in Pa
Red diamonds : participants in CCM.P-K4
Pink squares : participants in EUROMET.M.P-K1.a only
CNR-IMGC: two different methods
CCM.P-K4, EUROMET.M.P-K1.a, EUROMET.M.P-K1.b, SIM-EUROMET.M.P-BK3 and EURAMET.M.P-K15.1
MEASURAND Pressure
NOMINAL VALUE 1 Pa
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-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 3 Pa
Lab i | ||
D_{i} | U_{i} | |
/ Pa | / Pa | |
CSIRO-NML | 0.301 | 0.052 |
CNR-IMGC | 0.004 | 0.016 |
NIST | 0.0008 | 0.0037 |
NPLI | -0.0071 | 0.0049 |
NPL | 0.001 | 0.016 |
PTB | -0.0013 | 0.0075 |
BNM-LNE | -0.017 | 0.013 |
MIKES | 0.041 | 0.052 |
SP | 0.0056 | 0.068 |
CEM | 0.0020 | 0.024 |
OMH | -0.093 | 0.23 |
UME | 0.018 | 0.018 |
NMi-VSL | -0.033 | 0.036 |
CMI | 0.008 | 0.026 |
INRIM | 0.010 | 0.026 |
LNE | 0.003 | 0.026 |
MIKES | 0.022 | 0.072 |
In pink: participants in EUROMET.M.P-K1.a.
In blue: participants in EURAMET.M.P-K4.2010.
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a and EURAMET.M.P-K4.2010.
Results are presented under A4 printable format in Summary Results (PDF file).
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 10 Pa
Lab i | ||
D_{i} | U_{i} | |
/ Pa | / Pa | |
CSIRO-NML | 0.57 | 0.10 |
CNR-IMGC | 0.015 | 0.053 |
KRISS | 0.003 | 0.023 |
NIST | 0.000 | 0.013 |
NPLI | -0.018 | 0.016 |
NPL | 0.003 | 0.053 |
PTB | -0.005 | 0.025 |
BNM-LNE | -0.040 | 0.041 |
MIKES | 0.043 | 0.082 |
SP | -0.0080 | 0.13 |
CEM | -0.0072 | 0.079 |
OMH | -0.40 | 0.92 |
UME | 0.051 | 0.058 |
NMi-VSL | 0.0058 | 0.037 |
CMI | -0.010 | 0.028 |
INRIM | -0.003 | 0.028 |
LNE | -0.010 | 0.028 |
MIKES | 0.001 | 0.073 |
In pink: participants in EUROMET.M.P-K1.a.
In blue: participants in EURAMET.M.P-K4.2010.
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a and EURAMET.M.P-K4.2010.
Results are presented under A4 printable format in Summary Results (PDF file).
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 30 Pa
Lab i | ||
D_{i} | U_{i} | |
/ Pa | / Pa | |
CSIRO-NML | 0.91 | 0.15 |
CNR-IMGC | 0.06 | 0.16 |
KRISS | 0.022 | 0.035 |
NIST | -0.010 | 0.029 |
NPLI | -0.047 | 0.041 |
NPL | -0.03 | 0.10 |
PTB | 0.002 | 0.062 |
BNM-LNE | -0.078 | 0.11 |
MIKES | 0.050 | 0.20 |
SP | -0.055 | 0.32 |
CEM | -0.037 | 0.20 |
OMH | 2.0 | 3.2 |
UME | 0.11 | 0.14 |
NMi-VSL | 0.064 | 0.042 |
CMI | -0.016 | 0.028 |
INRIM | -0.004 | 0.028 |
LNE | -0.014 | 0.028 |
MIKES | -0.007 | 0.074 |
In pink: participants in EUROMET.M.P-K1.a.
In blue: participants in EURAMET.M.P-K4.2010.
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a and EURAMET.M.P-K4.2010.
Results are presented under A4 printable format in Summary Results (PDF file).
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 100 Pa
Lab i | ||
D_{i} | U_{i} | |
/ Pa | / Pa | |
CSIRO-NML | 0.83 | 0.20 |
CNR-IMGC | 0.18 | 0.11 |
KRISS | 0.036 | 0.081 |
NIST | -0.009 | 0.074 |
NPLI | -0.13 | 0.11 |
NPL | -0.08 | 0.30 |
PTB | 0.00 | 0.19 |
BNM-LNE | -0.17 | 0.38 |
MIKES | 0.077 | 0.70 |
SP | -0.15 | 0.96 |
CEM | -0.15 | 0.63 |
OMH | 2.5 | 3.1 |
UME | 0.32 | 0.47 |
NMi-VSL | 0.096 | 0.069 |
CNR-IMGC | -0.080 | 0.40 |
In pink: participants in EUROMET.M.P-K1.a only.
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a.
Results are presented under A4 printable format in Summary Results (PDF file).
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 300 Pa
Lab i | ||
D_{i} | U_{i} | |
/ Pa | / Pa | |
CSIRO-NML | 0.57 | 0.34 |
CNR-IMGC | 0.13 | 0.24 |
KRISS | 0.01 | 0.22 |
NIST | -0.01 | 0.22 |
NPLI | -0.24 | 0.33 |
NPL | -0.20 | 0.90 |
PTB | -0.08 | 0.56 |
BNM-LNE | -0.30 | 0.57 |
MIKES | -0.10 | 1.3 |
SP | -0.30 | 1.3 |
CEM | -0.30 | 1.3 |
CNR-IMGC | 0.13 | 0.61 |
In pink: participants in EUROMET.M.P-K1.a only.
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a.
Results are presented under A4 printable format in Summary Results (PDF file).
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 1000 Pa
Lab i | ||
D_{i} | U_{i} | |
/ Pa | / Pa | |
CSIRO-NML | 0.33 | 0.78 |
CNR-IMGC | 0.18 | 0.74 |
KRISS | 0.06 | 0.74 |
NIST | 0.03 | 0.73 |
NPLI | -0.9 | 1.4 |
NPL | 0.7 | 3.0 |
PTB | -0.3 | 1.9 |
BNM-LNE | -0.38 | 1.9 |
MIKES | 0.32 | 4.5 |
SP | 0.51 | 2.3 |
CEM | -0.38 | 4.2 |
CNR-IMGC | 0.38 | 2.0 |
In pink: participants in EUROMET.M.P-K1.a only.
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a.
Results are presented under A4 printable format in Summary Results (PDF file).
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4, EUROMET.M.P-K1.a, EUROMET.M.P-K1.b, SIM-EUROMET.M.P-BK3 and EURAMET.M.P-K15.1
MEASURAND Pressure
NOMINAL VALUE 1 Pa
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 in gas (absolute mode) |
Time of measurements | 2001 - 2002 |
Status | Approved for equivalence |
Final Reports of the comparisons | |
Measurand | Pressure: 3 mPa to 0.9 Pa |
Transfer device | Spinning rotor gauges |
Comparison type | Key Comparison |
Consultative Committee | CCM (Consultative Committee for Mass and Related Quantities) |
Conducted by | SIM (Inter-American Metrology System) |
Comments | This is a bilateral key comparison between CENAM and PTB. The CCM.P-K4 results were published on 08 February 2002, then completed with EUROMET.M.P-K1.b and SIM-EUROMET.M.P-BK3 results at nominal pressure close to 1 Pa, on 15 November 2004. Additional results from EUROMET.M.P-K1.a were published on 25 March 2005 for the pressure range 1 Pa to 1000 Pa, and from EURAMET.M.P-K4.2010 on 15 April 2014 for the nominal pressures 1 Pa, 3 Pa and 30 Pa. Pressure measurements in gas (absolute mode) |
Pilot institute |
PTB
Physikalisch-Technische Bundesanstalt Germany |
Contact person | K. Jousten +49 (0) 30 34 81 7262 |
Additional |
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-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 3 Pa
The key comparison reference value, p_{R}, is obtained from an unweighted mean of the measurement method means (outliers excluded). A correction is applied to set p_{R} numerically equal to the nominal pressure (see CCM.P-K4 Final Report, page 41). |
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: D_{i} = (p_{i} - p_{R}) and U_{i}, its expanded uncertainty at a 95% level of confidence, both expressed in Pa. |
The degree of equivalence between two laboratories is given by a pair of terms: D_{ij} = D_{i} - D_{j} = (p_{i} - p_{j}) and U_{ij}, its expanded uncertainty at 95% level of confidence, both expressed in Pa. |
The results of EUROMET.M.P-K1.a are linked to those of CCM.P-K4 for 7 pressure nominal values in the range 1 Pa to 1000 Pa, through the common participation of three laboratories: CNR-IMGC, PTB, and NPL.
The CNR-IMGC, however, does not participate in the linking process in the pressure range 100 Pa to 1000 Pa, because it did not use a Static Expansion System for that range of measurements in CCM.P-K4.
The detailed calculation used in the linking process is presented on pages 20 and 21 of the EUROMET.M.P-K1.a Final report.
The degrees of equivalence of laboratories having participated in EUROMET.M.P-K1.a only (plus those of CNR-IMGC in the range 100 Pa to 1000 Pa) relative to the CCM.P-K4 key comparison reference values are obtained from the linking process and are given in table 11 on page 22 of the EUROMET.M.P-K1.a Final Report. |
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a. |
PTB provides the link between key comparisons CCM.P-K4 and EURAMET.M.P-K4.2010 for nominal pressures 3 Pa, 10 Pa, and 30 Pa.
The linkage process is described in Section 11 of the EURAMET.M.P-K4.2010 Final Report.
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 10 Pa
The key comparison reference value, p_{R}, is obtained from an unweighted mean of the measurement method means (outliers excluded). A correction is applied to set p_{R} numerically equal to the nominal pressure (see CCM.P-K4 Final Report, page 41). The combined standard uncertainty of p_{R} is u_{R} (see CCM.P-K4 Final Report, page 42). |
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: D_{i} = (p_{i} - p_{R}) and U_{i}, its expanded uncertainty at a 95% level of confidence, both expressed in Pa. |
The degree of equivalence between two laboratories is given by a pair of terms: D_{ij} = D_{i} - D_{j} = (p_{i} - p_{j}) and U_{ij}, its expanded uncertainty at 95% level of confidence, both expressed in Pa. |
The results of EUROMET.M.P-K1.a are linked to those of CCM.P-K4 for 7 pressure nominal values in the range 1 Pa to 1000 Pa, through the common participation of three laboratories: CNR-IMGC, PTB, and NPL.
The CNR-IMGC, however, does not participate in the linking process in the pressure range 100 Pa to 1000 Pa, because it did not use a Static Expansion System for that range of measurements in CCM.P-K4.
The detailed calculation used in the linking process in presented on pages 20 and 21 of the EUROMET.M.P-K1.a Final report.
The degrees of equivalence of laboratories having participated in EUROMET.M.P-K1.a only (plus those of CNR-IMGC in the range 100 Pa to 1000 Pa) relative to the CCM.P-K4 key comparison reference values are obtained from the linking process and are given in table 11 on page 22 of the EUROMET.M.P-K1.a Final Report. |
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a. |
PTB provides the link between key comparisons CCM.P-K4 and EURAMET.M.P-K4.2010 for nominal pressures 3 Pa, 10 Pa, and 30 Pa.
The linkage process is described in Section 11 of the EURAMET.M.P-K4.2010 Final Report.
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL VALUE : 30 Pa
The key comparison reference value, p_{R}, is obtained from an unweighted mean of the measurement method means (outliers excluded). A correction is applied to set p_{R} numerically equal to the nominal pressure (see CCM.P-K4 Final Report, page 41). The combined standard uncertainty of p_{R} is u_{R} (see CCM.P-K4 Final Report, page 42). |
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: D_{i} = (p_{i} - p_{R}) and U_{i}, its expanded uncertainty at a 95% level of confidence, both expressed in Pa. |
The degree of equivalence between two laboratories is given by a pair of terms: D_{ij} = D_{i} - D_{j} = (p_{i} - p_{j}) and U_{ij}, its expanded uncertainty at 95% level of confidence, both expressed in Pa. |
The results of EUROMET.M.P-K1.a are linked to those of CCM.P-K4 for 7 pressure nominal values in the range 1 Pa to 1000 Pa, through the common participation of three laboratories: CNR-IMGC, PTB, and NPL.
The CNR-IMGC, however, does not participate in the linking process in the pressure range 100 Pa to 1000 Pa, because it did not use a Static Expansion System for that range of measurements in CCM.P-K4.
The detailed calculation used in the linking process in presented on pages 20 and 21 of the EUROMET.M.P-K1.a Final report.
The degrees of equivalence of laboratories having participated in EUROMET.M.P-K1.a only (plus those of CNR-IMGC in the range 100 Pa to 1000 Pa) relative to the CCM.P-K4 key comparison reference values are obtained from the linking process and are given in table 11 on page 22 of the EUROMET.M.P-K1.a Final Report. |
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a. |
PTB provides the link between key comparisons CCM.P-K4 and EURAMET.M.P-K4.2010 for nominal pressures 3 Pa, 10 Pa, and 30 Pa.
The linkage process is described in Section 11 of the EURAMET.M.P-K4.2010 Final Report.
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 100 Pa
The key comparison reference value, p_{R}, is obtained from an unweighted mean of the measurement method means (outliers excluded). |
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: D_{i} = (p_{i} - p_{R}) and U_{i}, its expanded uncertainty at a 95% level of confidence, both expressed in Pa. |
The degree of equivalence between two laboratories is given by a pair of terms: D_{ij} = D_{i} - D_{j} = (p_{i} - p_{j}) and U_{ij}, its expanded uncertainty at 95% level of confidence, both expressed in Pa. |
The results of EUROMET.M.P-K1.a are linked to those of CCM.P-K4 for 7 pressure nominal values in the range 1 Pa to 1000 Pa, through the common participation of three laboratories: CNR-IMGC, PTB, and NPL.
The CNR-IMGC, however, does not participate in the linking process in the pressure range 100 Pa to 1000 Pa, because it did not use a Static Expansion System for that range of measurements in CCM.P-K4.
The detailed calculation used in the linking process in presented on pages 20 and 21 of the EUROMET.M.P-K1.a Final report.
The degrees of equivalence of laboratories having participated in EUROMET.M.P-K1.a only (plus those of CNR-IMGC in the range 100 Pa to 1000 Pa) relative to the CCM.P-K4 key comparison reference values are obtained from the linking process and are given in table 11 on page 22 of the EUROMET.M.P-K1.a Final Report. |
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a. |
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 300 Pa
The key comparison reference value, p_{R}, is obtained from an unweighted mean of the measurement method means. |
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: D_{i} = (p_{i} - p_{R}) and U_{i}, its expanded uncertainty at a 95% level of confidence, both expressed in Pa. |
The degree of equivalence between two laboratories is given by a pair of terms: D_{ij} = D_{i} - D_{j} = (p_{i} - p_{j}) and U_{ij}, its expanded uncertainty at 95% level of confidence, both expressed in Pa. |
The results of EUROMET.M.P-K1.a are linked to those of CCM.P-K4 for 7 pressure nominal values in the range 1 Pa to 1000 Pa, through the common participation of three laboratories: CNR-IMGC, PTB, and NPL.
The CNR-IMGC, however, does not participate in the linking process in the pressure range 100 Pa to 1000 Pa, because it did not use a Static Expansion System for that range of measurements in CCM.P-K4.
The detailed calculation used in the linking process in presented on pages 20 and 21 of the EUROMET.M.P-K1.a Final report.
The degrees of equivalence of laboratories having participated in EUROMET.M.P-K1.a only (plus those of CNR-IMGC in the range 100 Pa to 1000 Pa) relative to the CCM.P-K4 key comparison reference values are obtained from the linking process and are given in table 11 on page 22 of the EUROMET.M.P-K1.a Final Report. |
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a. |
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL VALUE : 1000 Pa
The key comparison reference value, p_{R}, is obtained from an unweighted mean of the measurement method means. |
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: D_{i} = (p_{i} - p_{R}) and U_{i}, its expanded uncertainty at a 95% level of confidence, both expressed in Pa. |
The degree of equivalence between two laboratories is given by a pair of terms: D_{ij} = D_{i} - D_{j} = (p_{i} - p_{j}) and U_{ij}, its expanded uncertainty at 95% level of confidence, both expressed in Pa. |
The results of EUROMET.M.P-K1.a are linked to those of CCM.P-K4 for 7 pressure nominal values in the range 1 Pa to 1000 Pa, through the common participation of three laboratories: CNR-IMGC, PTB, and NPL.
The CNR-IMGC, however, does not participate in the linking process in the pressure range 100 Pa to 1000 Pa, because it did not use a Static Expansion System for that range of measurements in CCM.P-K4.
The detailed calculation used in the linking process in presented on pages 20 and 21 of the EUROMET.M.P-K1.a Final report.
The degrees of equivalence of laboratories having participated in EUROMET.M.P-K1.a only (plus those of CNR-IMGC in the range 100 Pa to 1000 Pa) relative to the CCM.P-K4 key comparison reference values are obtained from the linking process and are given in table 11 on page 22 of the EUROMET.M.P-K1.a Final Report. |
No pair-wise degrees of equivalence are deduced from the measurements carried out in the framework of key comparison EUROMET.M.P-K1.a. |
CCM.P-K4, EUROMET.M.P-K1.a, EUROMET.M.P-K1.b, SIM-EUROMET.M.P-BK3 and EURAMET.M.P-K15.1
MEASURAND Pressure
NOMINAL VALUE 1 Pa
CCM.P-K4
The key comparison reference value, x_{R}, is obtained from an unweighted mean of the measurement method means (outliers excluded). A correction is applied to set x_{R} numerically equal to the nominal pressure (see CCM.P-K4 Final Report, page 41). The combined standard uncertainty of x_{R} is u_{R} (see CCM.P-K4 Final Report, page 42), where
x_{R} = 1 Pa and u_{R} = 0.0008 Pa
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms:
D_{i} = (x_{i} - x_{R}) and U_{i}, its expanded uncertainty at a 95% level of confidence (k = 2), both expressed in Pa
Linking EUROMET.M.P-K1.a to CCM.P-K4
The results of EUROMET.M.P-K1.a are linked to those of CCM.P-K4 via CNR-IMGC, PTB, and NPL; who participated in both vcomparisons.
Linking EUROMET.M.P-K1.b to CCM.P-K4
The results of EUROMET.M.P-K1.b are linked to those of CCM.P-K4 via CNR-IMGC, PTB, and NPL; who participated in both vcomparisons.
Linking SIM-EUROMET.M.P-BK3 to CCM.P-K4
The results of SIM-EUROMET.M.P-BK3 are linked to those of CCM.P-K4 via PTB / EUROMET.M.P-K1.b who participated in these comparisons.
Linking EURAMET.M.P-K15.1 to CCM.P-K4
The results of EURAMET.M.P-K15.1 at 1 Pas are linked to those of CCM.P-K4 via PTB who participated in both comparisons
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL PRESSURE : 3 Pa
p_{i} : corrected mean gauge reading obtained by laboratory i
u_{i} : combined standard uncertainty of p_{i}
Further information on p_{i} and u_{i} may be found respectively on page 15 and page 22 of CCM.P-K4 Final Report.
The laboratory individual measurements of the participants in EUROMET.M.P-K1.a are given in Table 7 and 8 on pages 17, 18, and 19 of the EUROMET.M.P-K1.a Final Report.
All measurements used a Static Expansion System and were carried out between September 1998 and April 2004.
The laboratory individual measurements of the participants in the key comparison EURAMET.M.P-K4.2010 are given in Table 10.7a on page 23 of the EURAMET.M.P-K4.2010 Final Report.
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL PRESSURE : 10 Pa
p_{i} : corrected mean gauge reading obtained by laboratory i
u_{i} : combined standard uncertainty of p_{i}
Further information on p_{i} and u_{i} may be found respectively on page 15 and page 22 of CCM.P-K4 Final Report.
The laboratory individual measurements of the participants in EUROMET.M.P-K1.a are given in Table 7 and 8 on pages 17, 18, and 19 of the EUROMET.M.P-K1.a Final Report.
All measurements used a Static Expansion System and were carried out between September 1998 and April 2004.
The laboratory individual measurements of the participants in the key comparison EURAMET.M.P-K4.2010 are given in Table 10.7a on page 23 of the EURAMET.M.P-K4.2010 Final Report.
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4, EUROMET.M.P-K1.a, and EURAMET.M.P-K4.2010
MEASURAND : Pressure
NOMINAL PRESSURE : 30 Pa
p_{i} : corrected mean gauge reading obtained by laboratory i
u_{i} : combined standard uncertainty of p_{i}
Further information on p_{i} and u_{i} may be found respectively on page 15 and page 22 of CCM.P-K4 Final Report.
The laboratory individual measurements of the participants in EUROMET.M.P-K1.a are given in Table 7 and 8 on pages 17, 18, and 19 of the EUROMET.M.P-K1.a Final Report.
All measurements used a Static Expansion System and were carried out between September 1998 and April 2004.
The laboratory individual measurements of the participants in the key comparison EURAMET.M.P-K4.2010 are given in Table 10.7a on page 23 of the EURAMET.M.P-K4.2010 Final Report.
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL PRESSURE : 100 Pa
p_{i} : corrected mean gauge reading obtained by laboratory i
u_{i} : combined standard uncertainty of p_{i}
Further information on p_{i} and u_{i} may be found respectively on page 15 and page 22 of CCM.P-K4 Final Report.
Lab i | p_{i} / Pa |
u_{i} / Pa |
Measurement method |
Date of |
CSIRO-NML | 100.831 | 0.093 |
Liquid-Column Manometer |
24 Feb to 03 Mar 1999 |
CNR-IMGC | 100.176 | 0.051 |
Liquid-Column Manometer |
19 Jan to 08 Feb 1999 |
KRISS | 100.036 | 0.021 |
Liquid-Column Manometer |
15 Jun to 22 Jun 1999 |
NIST | 99.9909 | 0.0053 |
Liquid-Column Manometer(s) |
17 Mar to 03 Apr and 08 Jul to 24 Jul 1998, 23 Apr to 06 May and 23 Aug to 10 Sep 1999 |
NPLI | 99.874 | 0.055 |
Static Expansion System |
01 Jan to 14 Jan 1999 |
NPL | 99.92 | 0.18 |
Static Expansion System |
17 Nov to 25 Nov 1998 |
PTB | 100.00 | 0.11 |
Static Expansion System |
28 May to 04 Jun 1998 |
The laboratory individual measurements of the participants in EUROMET.M.P-K1.a are given in Table 7 and 8 on pages 17, 18, and 19 of the EUROMET.M.P-K1.a Final Report.
All measurements used a Static Expansion System and were carried out between September 1998 and April 2004.
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL PRESSURE : 300 Pa
p_{i} : corrected mean gauge reading obtained by laboratory i
u_{i} : combined standard uncertainty of p_{i}
Further information on p_{i} and u_{i} may be found respectively on page 15 and page 22 of CCM.P-K4 Final Report.
Lab i | p_{i} / Pa |
u_{i} / Pa |
Measurement method |
Date of |
CSIRO-NML | 300.57 | 0.16 |
Liquid-Column Manometer |
24 Feb to 03 Mar 1999 |
CNR-IMGC | 300.132 | 0.060 |
Liquid-Column Manometer |
19 Jan to 08 Feb 1999 |
KRISS | 300.010 | 0.023 |
Liquid-Column Manometer |
15 Jun to 22 Jun 1999 |
NIST | 299.9871 | 0.0054 |
Liquid-Column Manometer(s) |
17 Mar to 03 Apr and 08 Jul to 24 Jul 1998, 23 Apr to 06 May and 23 Aug to 10 Sep 1999 |
NPLI | 299.76 | 0.16 |
Static Expansion System |
01 Jan to 14 Jan 1999 |
NPL | 299.80 | 0.54 |
Static Expansion System |
17 Nov to 25 Nov 1998 |
PTB | 299.92 | 0.32 |
Static Expansion System |
28 May to 04 Jun 1998 |
The laboratory individual measurements of the participants in EUROMET.M.P-K1.a are given in Table 7 and 8 on pages 17, 18, and 19 of the EUROMET.M.P-K1.a Final Report.
All measurements used a Static Expansion System and were carried out between September 1998 and April 2004.
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4 and EUROMET.M.P-K1.a
MEASURAND : Pressure
NOMINAL PRESSURE : 1000 Pa
p_{i} : corrected mean gauge reading obtained by laboratory i
u_{i} : combined standard uncertainty of p_{i}
Further information on p_{i} and u_{i} may be found respectively on page 15 and page 22 of CCM.P-K4 Final Report.
Lab i | p_{i} / Pa |
u_{i} / Pa |
Measurement method |
Date of |
CSIRO-NML | 1000.33 | 0.16 |
Liquid-Column Manometer |
24 Feb to 03 Mar 1999 |
CNR-IMGC | 1000.178 | 0.061 |
Liquid-Column Manometer |
19 Jan to 08 Feb 1999 |
KRISS | 1000.056 | 0.055 |
Liquid-Column Manometer |
15 Jun to 22 Jun 1999 |
NIST | 1000.0308 | 0.0059 |
Liquid-Column Manometer(s) |
17 Mar to 03 Apr and 08 Jul to 24 Jul 1998, 23 Apr to 06 May and 23 Aug to 10 Sep 1999 |
NPLI | 999.12 | 0.74 |
Static Expansion System |
01 Jan to 14 Jan 1999 |
NPL | 1000.7 | 1.8 |
Static Expansion System |
17 Nov to 25 Nov 1998 |
PTB | 999.7 | 1.1 |
Static Expansion System |
28 May to 04 Jun 1998 |
The laboratory individual measurements of the participants in EUROMET.M.P-K1.a are given in Table 7 and 8 on pages 17, 18, and 19 of the EUROMET.M.P-K1.a Final Report.
All measurements used a Static Expansion System and were carried out between September 1998 and April 2004.
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
CCM.P-K4, EUROMET.M.P-K1.a, EUROMET.M.P-K1.b, SIM-EUROMET.M.P-BK3 and EURAMET.M.P-K15.1
MEASURAND Pressure
NOMINAL VALUE 1 Pa
The initial measurement results are available in the Final Reports.