CCT-K6 and SIM.T-K6.3
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -10 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in°C.
CCT-K6, SIM.T-K6.3 and SIM.T-K6.7
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 1 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
CCT-K6, SIM.T-K6.3 and SIM.T-K6.7
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 20 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
CCT-K6 and CCT-K6.2
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -50 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
CCT-K6 and CCT-K6.2
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -30 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
CCT-K6 and SIM.T-K6.3
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -10 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
°C |
°C |
°C |
||
NPL | 0.007 | 0.05 | ||
NMIJ | -0.015 | 0.062 | ||
VSL | 0.069 | 0.047 | ||
MIKES | 0.031 | 0.046 | ||
INTA | 0.013 | 0.044 | ||
INRIM | 0.039 | 0.045 | ||
NIST | -0.039 | 0.043 | ||
NMC, A*STAR | -0.028 | 0.058 | ||
NIM | -0.091 | 0.099 | ||
VNIIFTRI | -0.031 | 0.041 | ||
INMETRO | 0.04 | 0.2 |
CCT-K6, SIM.T-K6.3 and SIM.T-K6.7
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 1 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
°C |
°C |
°C |
||
NPL | 0.045 | 0.071 | ||
NMIJ | 0.002 | 0.07 | ||
VSL | -0.056 | 0.125 | ||
MIKES | 0.017 | 0.061 | ||
INTA | 0.022 | 0.059 | ||
INRIM | 0.01 | 0.058 | ||
NIST | -0.011 | 0.06 | ||
NMC, A*STAR | -0.029 | 0.083 | ||
NIM | -0.071 | 0.086 | ||
VNIIFTRI | -0.026 | 0.058 | ||
INMETRO | 0.04 | 0.21 | ||
INTI | 0.001 | 0.31 |
CCT-K6, SIM.T-K6.3 and SIM.T-K6.7
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 20 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
°C |
°C |
°C |
||
NPL | -0.014 | 0.049 | ||
NMIJ | 0 | 0.062 | ||
VSL | -0.005 | 0.057 | ||
MIKES | -0.006 | 0.051 | ||
INTA | 0.016 | 0.048 | ||
INRIM | 0.015 | 0.047 | ||
NIST | -0.006 | 0.05 | ||
NMC, A*STAR | -0.028 | 0.082 | ||
NIM | -0.097 | 0.073 | ||
VNIIFTRI | -0.003 | 0.046 | ||
INMETRO | 0.01 | 0.21 | ||
INTI | 0.062 | 0.27 |
CCT-K6 and CCT-K6.2
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -50 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
°C |
°C |
°C |
||
NPL | 0.014 | 0.028 | ||
NMIJ | -0.023 | 0.100 | ||
VSL | -0.153 | 0.134 | ||
MIKES | 0.037 | 0.043 | ||
INTA | -0.012 | 0.034 | ||
INRIM | 0.000 | 0.037 | ||
NMC, A*STAR | -0.046 | 0.067 | ||
NIM | -0.060 | 0.119 | ||
VNIIFTRI | -0.011 | 0.032 | ||
NIST | -0.012 | 0.142 |
CCT-K6 and CCT-K6.2
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -30 °C
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in °C.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
°C |
°C |
°C |
||
NPL | 0.034 | 0.064 | ||
NMIJ | -0.050 | 0.057 | ||
VSL | 0.015 | 0.105 | ||
MIKES | 0.016 | 0.046 | ||
INTA | -0.003 | 0.041 | ||
INRIM | 0.027 | 0.040 | ||
NMC, A*STAR | -0.028 | 0.062 | ||
NIM | -0.055 | 0.094 | ||
VNIIFTRI | -0.013 | 0.038 | ||
NIST | 0.048 | 0.075 |
Metrology area, Sub-field | Thermometry, Humidity |
Description | Comparison of dew/frost-point temperature standards |
Time of measurements | 2021 - 2022 |
Status | Report in progress, draft B |
Measurand | Dew/frost point -10 °C, 1 °C, 10 °C and 20 °C |
Transfer device | Chilled mirror hygrometer |
Comparison type | Key Comparison |
Consultative Committee | CCT (Consultative Committee for Thermometry) |
Conducted by | SIM (Inter-American Metrology System) |
Comments | This comparison replaces SIM.T-K6.6, which was abandoned in 2020 due to measurement problems that have now been resolved. |
Pilot institute |
NIST
National Institute of Standards and Technology United States |
Contact person | C. Meyer +1 301 975 4825 |
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" :
CCT-K6 and SIM.T-K6.3
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -10 °C
The key comparison reference value, xR, was obtained from the weighted mean of the participants' results excluding outliers. The standard uncertainty, uR, of xR included the uncertainty of the weighted mean and the additionnal uncertainty contribution for the drift of the hygrometers. The calculation of key comparison reference value is explained in section 7.1 on page 44 of the Final Report.
xR = 0.096 °C, and uR = 0.019 °C
The degree of equivalence of laboratory i with respect to xR is given by a pair of terms: Di and Ui, its expanded uncertainty (k = 2), both expressed in °C. (See section 7.3 on page 46 of the Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms, both expressed in °C: Dij and Uij its expanded uncertainty (k = 2) (See section 6 on page 34 of the Final Report).
Linking SIM.T-K6.3 to CCT-K6
The linking was made via NIST (United States of America) having participated in CCT-K6 (see Section 9 of the SIM.T-K6.7 Final Report).
CCT-K6, SIM.T-K6.3 and SIM.T-K6.7
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 1 °C
The key comparison reference value, xR, was obtained from the weighted mean of the participants' results excluding outliers. The standard uncertainty, uR, of xR included the uncertainty of the weighted mean and the additionnal uncertainty contribution for the drift of the hygrometers. The calculation of key comparison reference value is explained in section 7.1 on page 44 of the Final Report.
xR = 0.111 °C, and uR = 0.028 °C
The degree of equivalence of laboratory i with respect to xR is given by a pair of terms: Di and Ui, its expanded uncertainty (k = 2), both expressed in °C. (See section 7.3 on page 46 of the Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms, both expressed in °C: Dij and Uij its expanded uncertainty (k = 2) (See section 6 on page 34 of the Final Report).
Linking SIM.T-K6.3 to CCT-K6
The linking was made via NIST (United States of America) having participated in CCT-K6 (see Section 9 of the SIM.T-K6.7 Final Report).
Linking SIM.T-K6.7 to CCT-K6
The linking was made via INMETRO (Brazil) and NIST (United States of America) having participated both in SIM.T-K6.3, and NIST having participated in CCT-K6 (see Section 9 of the SIM.T-K6.7 Final Report).
CCT-K6, SIM.T-K6.3 and SIM.T-K6.7
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 20 °C
The key comparison reference value, xR, was obtained from the weighted mean of the participants' results excluding outliers. The standard uncertainty, uR, of xR included the uncertainty of the weighted mean and the additionnal uncertainty contribution for the drift of the hygrometers. The calculation of key comparison reference value is explained in section 7.1 on page 44 of the Final Report.
xR = 0.147 °C, and uR = 0.022 °C
The degree of equivalence of laboratory i with respect to xR is given by a pair of terms: Di and Ui, its expanded uncertainty (k = 2), both expressed in °C. (See section 7.3 on page 46 of the Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms, both expressed in °C: Dij and Uij its expanded uncertainty (k = 2) (See section 6 on page 34 of the Final Report).
Linking SIM.T-K6.3 to CCT-K6
The linking was made via NIST (United States of America) having participated in CCT-K6 (see Section 9 of the SIM.T-K6.7 Final Report).
Linking SIM.T-K6.7 to CCT-K6
The linking was made via INMETRO (Brazil) and NIST (United States of America) having participated both in SIM.T-K6.3, and NIST having participated in CCT-K6 (see Section 9 of the SIM.T-K6.7 Final Report).
CCT-K6 and CCT-K6.2
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -50 °C
The key comparison reference value, xR, was obtained from the weighted mean of the participants' results excluding outliers. The standard uncertainty, uR, of xR included the uncertainty of the weighted mean and the additionnal uncertainty contribution for the drift of the hygrometers. The calculation of key comparison reference value is explained in section 7.1 on page 44 of the Final Report.
xR = 0.055 °C, and uR = 0.011 °C
The degree of equivalence of laboratory i with respect to xR is given by a pair of terms: Di and Ui, its expanded uncertainty (k = 2), both expressed in °C. (See section 7.3 on page 46 of the Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms, both expressed in °C: Dij and Uij its expanded uncertainty (k = 2) (See section 6 on page 34 of the Final Report).
Linking CCT-K6.2 to CCT-K6
The results of CCT-K6.2 are linked to CCT-K6 via NMIJ AIST who participated in both comparisons.
CCT-K6 and CCT-K6.2
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -30 °C
The key comparison reference value, xR, was obtained from the weighted mean of the participants' results excluding outliers. The standard uncertainty, uR, of xR included the uncertainty of the weighted mean and the additionnal uncertainty contribution for the drift of the hygrometers. The calculation of key comparison reference value is explained in section 7.1 on page 44 of the Final Report.
xR = 0.090 °C, and uR = 0.017 °C
The degree of equivalence of laboratory i with respect to xR is given by a pair of terms: Di and Ui, its expanded uncertainty (k = 2), both expressed in °C. (See section 7.3 on page 46 of the Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms, both expressed in °C: Dij and Uij its expanded uncertainty (k = 2) (See section 6 on page 34 of the Final Report).
Linking CCT-K6.2 to CCT-K6
The results of CCT-K6.2 were linked to CCT-K6 via NMIJ AIST who participated in both comparisons.
CCT-K6
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -10 °C
RLab i measurement result reported by each laboratory i which was calculated from the mean of simultaneous readings of two instruments, and taken as the mid-point between the two instrument mean readings (See section 5 on page 31 of the Final Report)
ui combined standard uncertainty of RLab i
The full set of data for the results and associated standard uncertainties reported by each laboratory i are available in Appendix 2, and 3 of the Final Report.
CCT-K6
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 1 °C
RLab i measurement result reported by each laboratory i which was calculated from the mean of simultaneous readings of two instruments, and taken as the mid-point between the two instrument mean readings (See section 5 on page 31 of the Final Report)
ui combined standard uncertainty of RLab i
The full set of data for the results and associated standard uncertainties reported by each laboratory i are available in Appendix 2, and 3 of the Final Report.
CCT-K6
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE 20 °C
RLab i measurement result reported by each laboratory i which was calculated from the mean of simultaneous readings of two instruments, and taken as the mid-point between the two instrument mean readings (See section 5 on page 31 of the Final Report)
ui combined standard uncertainty of RLab i
The full set of data for the results and associated standard uncertainties reported by each laboratory i are available in Appendix 2, and 3 of the Final Report.
CCT-K6
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -50 °C
RLab i measurement result reported by each laboratory i which was calculated from the mean of simultaneous readings of two instruments, and taken as the mid-point between the two instrument mean readings (See section 5 on page 31 of the Final Report)
ui combined standard uncertainty of RLab i
The full set of data for the results and associated standard uncertainties reported by each laboratory i are available in Appendix 2, and 3 of the Final Report.
CCT-K6
MEASURAND Realization of local scale of dew-point temperature of humid gas
NOMINAL VALUE -30 °C
RLab i measurement result reported by each laboratory i which was calculated from the mean of simultaneous readings of two instruments, and taken as the mid-point between the two instrument mean readings (See section 5 on page 31 of the Final Report)
ui combined standard uncertainty of RLab i
The full set of data for the results and associated standard uncertainties reported by each laboratory i are available in Appendix 2, and 3 of the Final Report.