CCM.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Ultrasonic anemometer
Degrees of equivalence: offset Di and expanded uncertainty (k = 2) Ui
NOMINAL VALUE 0.5 m/s
NOMINAL VALUE 1 m/s
NOMINAL VALUE 2 m/s
NOMINAL VALUE 5 m/s
NOMINAL VALUE 10 m/s
NOMINAL VALUE 15 m/s
NOMINAL VALUE 20 m/s
NOMINAL VALUE 30 m/s
NOMINAL VALUE 40 m/s
CCM.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Laser Doppler anemometer
Degrees of equivalence: offset Di and expanded uncertainty (k = 2) Ui
NOMINAL VALUE 0.5 m/s
NOMINAL VALUE 1 m/s
NOMINAL VALUE 2 m/s
NOMINAL VALUE 5 m/s
NOMINAL VALUE 10 m/s
NOMINAL VALUE 15 m/s
NOMINAL VALUE 20 m/s
NOMINAL VALUE 30 m/s
NOMINAL VALUE 40 m/s
CCM.FF-K3.2011
OPTIONAL MEASURAND Laser Doppler anemometer calibration using a primary standard
TRANSFER STANDARD Laser Doppler anemometer
Degrees of equivalence: offset Di and expanded uncertainty (k = 2) Ui
CCM.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Ultrasonic anemometer
Degrees of equivalence: offset Di and expanded uncertainty (k = 2) Ui
NOMINAL VALUE 0.5 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0051 | 0.0204 | ||
| LNE-CETIAT | -0.0008 | 0.0272 | ||
| VSL | -0.0311 | 0.0492 | ||
| E+E | -0.0221 | 0.0198 | ||
| NMIJ | -0.0092 | 0.0433 | ||
| NIM | -0.0003 | 0.0376 | ||
| CMS | -0.0014 | 0.0179 | ||
| NIST | 0.0131 | 0.0178 | ||
| VNIIM | -0.0109 | 0.0309 |
NOMINAL VALUE 1 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0023 | 0.012 | ||
| LNE-CETIAT | 0.0066 | 0.0163 | ||
| VSL | -0.0147 | 0.013 | ||
| E+E | -0.01 | 0.0122 | ||
| NMIJ | -0.0048 | 0.0185 | ||
| NIM | -0.0009 | 0.0188 | ||
| CMS | 0.0022 | 0.0106 | ||
| NIST | 0.0109 | 0.0117 | ||
| VNIIM | -0.005 | 0.0186 |
NOMINAL VALUE 2 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0088 | 0.0106 | ||
| LNE-CETIAT | 0.003 | 0.0132 | ||
| VSL | -0.0004 | 0.0134 | ||
| E+E | -0.0095 | 0.0115 | ||
| NMIJ | -0.0033 | 0.0115 | ||
| NIM | 0.0062 | 0.0171 | ||
| CMS | 0.0047 | 0.0109 | ||
| NIST | 0.0027 | 0.0101 | ||
| INRIM | -0.0001 | 0.0136 | ||
| VNIIM | -0.0036 | 0.0164 |
NOMINAL VALUE 5 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0034 | 0.0046 | ||
| LNE-CETIAT | -0.0011 | 0.0072 | ||
| VSL | -0.0028 | 0.0101 | ||
| E+E | -0.0053 | 0.0066 | ||
| NMIJ | 0.0001 | 0.0059 | ||
| NIM | -0.001 | 0.0084 | ||
| CMS | 0.0005 | 0.0054 | ||
| NIST | 0.0047 | 0.0046 | ||
| INRIM | -0.0004 | 0.0092 | ||
| VNIIM | -0.0035 | 0.008 |
NOMINAL VALUE 10 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0018 | 0.0042 | ||
| LNE-CETIAT | 0.0014 | 0.0066 | ||
| VSL | 0.0026 | 0.0102 | ||
| E+E | -0.0021 | 0.0064 | ||
| NMIJ | 0.0012 | 0.0048 | ||
| NIM | 0.0029 | 0.0066 | ||
| CMS | 0.0026 | 0.0053 | ||
| NIST | -0.0017 | 0.0043 | ||
| INRIM | -0.0074 | 0.0093 | ||
| VNIIM | -0.0018 | 0.0074 |
NOMINAL VALUE 15 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0008 | 0.0041 | ||
| LNE-CETIAT | 0.0013 | 0.0063 | ||
| VSL | -0.0003 | 0.0101 | ||
| E+E | -0.0005 | 0.0064 | ||
| NMIJ | 0.001 | 0.0052 | ||
| NIM | -0.0021 | 0.0064 | ||
| CMS | 0.0071 | 0.0056 | ||
| NIST | -0.0019 | 0.0043 | ||
| INRIM | -0.0082 | 0.0093 | ||
| VNIIM | 0.0003 | 0.0072 |
NOMINAL VALUE 20 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0004 | 0.004 | ||
| LNE-CETIAT | 0.0016 | 0.0062 | ||
| VSL | -0.0048 | 0.0103 | ||
| E+E | -0.0005 | 0.0063 | ||
| NMIJ | -0.0005 | 0.0052 | ||
| NIM | -0.002 | 0.0065 | ||
| CMS | 0.0087 | 0.0055 | ||
| NIST | -0.0019 | 0.0043 | ||
| INRIM | -0.0079 | 0.0092 | ||
| VNIIM | -0.0026 | 0.0071 |
NOMINAL VALUE 30 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0009 | 0.0039 | ||
| LNE-CETIAT | 0.0039 | 0.006 | ||
| VSL | -0.0069 | 0.013 | ||
| E+E | 0.0001 | 0.0063 | ||
| NMIJ | -0.0003 | 0.0044 | ||
| NIM | -0.0008 | 0.007 | ||
| NIST | -0.0002 | 0.0043 | ||
| INRIM | -0.0061 | 0.0093 | ||
| VNIIM | -0.0027 | 0.0069 |
NOMINAL VALUE 40 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0004 | 0.0038 | ||
| LNE-CETIAT | 0.0047 | 0.006 | ||
| VSL | -0.0111 | 0.015 | ||
| E+E | -0.0002 | 0.0062 | ||
| NMIJ | -0.0013 | 0.0041 | ||
| NIST | 0.001 | 0.0042 | ||
| VNIIM | -0.002 | 0.0068 |
CCM.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Laser Doppler anemometer
Degrees of equivalence: offset Di and expanded uncertainty (k = 2) Ui
NOMINAL VALUE 0.5 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0003 | 0.0132 | ||
| LNE-CETIAT | 0.0005 | 0.0214 | ||
| VSL | -0.0411 | 0.0449 | ||
| E+E | 0.0012 | 0.0125 | ||
| NIM | 0.0026 | 0.007 | ||
| CMS | -0.0028 | 0.0043 | ||
| NIST | 0.0024 | 0.0048 | ||
| VNIIM | -0.0103 | 0.02 |
NOMINAL VALUE 1 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.003 | 0.0079 | ||
| LNE-CETIAT | 0.0065 | 0.0131 | ||
| VSL | -0.0152 | 0.0101 | ||
| E+E | 0.0002 | 0.0082 | ||
| NIM | -0.0011 | 0.007 | ||
| CMS | -0.0007 | 0.0055 | ||
| NIST | 0.0032 | 0.0049 | ||
| VNIIM | -0.0041 | 0.0128 |
NOMINAL VALUE 2 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0002 | 0.0055 | ||
| LNE-CETIAT | 0.0032 | 0.009 | ||
| VSL | -0.0013 | 0.0103 | ||
| E+E | -0.0009 | 0.0063 | ||
| NMIJ | -0.0026 | 0.0062 | ||
| NIM | 0.0004 | 0.0036 | ||
| CMS | -0.0004 | 0.0066 | ||
| NIST | -0.0003 | 0.0072 | ||
| INRIM | 0.0034 | 0.0101 | ||
| VNIIM | -0.0019 | 0.0093 |
NOMINAL VALUE 5 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0021 | 0.0041 | ||
| LNE-CETIAT | -0.0005 | 0.0066 | ||
| VSL | -0.0043 | 0.0099 | ||
| E+E | -0.0012 | 0.0052 | ||
| NMIJ | 0.0006 | 0.0049 | ||
| NIM | -0.0006 | 0.0027 | ||
| CMS | -0.0018 | 0.005 | ||
| NIST | 0.0007 | 0.0038 | ||
| INRIM | 0.0004 | 0.0089 | ||
| VNIIM | -0.0029 | 0.0073 |
NOMINAL VALUE 10 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0017 | 0.0036 | ||
| LNE-CETIAT | -0.0005 | 0.0058 | ||
| VSL | 0.0063 | 0.01 | ||
| E+E | -0.0022 | 0.0048 | ||
| NMIJ | -0.0005 | 0.0044 | ||
| NIM | 0.0002 | 0.0025 | ||
| CMS | 0.0003 | 0.0054 | ||
| NIST | -0.0009 | 0.0038 | ||
| INRIM | -0.0088 | 0.0089 | ||
| VNIIM | -0.0013 | 0.0066 |
NOMINAL VALUE 15 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0018 | 0.0034 | ||
| LNE-CETIAT | 0.0001 | 0.0055 | ||
| VSL | 0.002 | 0.0102 | ||
| E+E | -0.0019 | 0.0046 | ||
| NMIJ | 0.0001 | 0.0047 | ||
| NIM | -0.0007 | 0.0037 | ||
| CMS | 0.0006 | 0.0051 | ||
| NIST | -0.0006 | 0.0037 | ||
| INRIM | -0.0077 | 0.009 | ||
| VNIIM | -0.0024 | 0.0063 |
NOMINAL VALUE 20 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0017 | 0.0034 | ||
| LNE-CETIAT | -0.0003 | 0.0054 | ||
| VSL | 0.0024 | 0.0117 | ||
| E+E | -0.002 | 0.0046 | ||
| NMIJ | -0.0007 | 0.0047 | ||
| NIM | 0.0006 | 0.0027 | ||
| CMS | -0.0008 | 0.005 | ||
| NIST | -0.0009 | 0.0038 | ||
| INRIM | -0.0066 | 0.0091 | ||
| VNIIM | -0.0006 | 0.0062 |
NOMINAL VALUE 30 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0014 | 0.0032 | ||
| LNE-CETIAT | 0.0001 | 0.0052 | ||
| VSL | 0.0025 | 0.0139 | ||
| E+E | -0.0015 | 0.0045 | ||
| NMIJ | -0.0012 | 0.0034 | ||
| NIM | 0.0014 | 0.0049 | ||
| NIST | -0.0002 | 0.0037 | ||
| INRIM | -0.0066 | 0.009 | ||
| VNIIM | -0.0032 | 0.0061 |
NOMINAL VALUE 40 m/s
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | 0.0015 | 0.0031 | ||
| LNE-CETIAT | 0.0016 | 0.0052 | ||
| VSL | -0.0024 | 0.0149 | ||
| E+E | -0.0007 | 0.0044 | ||
| NMIJ | -0.0011 | 0.0025 | ||
| NIST | 0.0005 | 0.0037 | ||
| VNIIM | -0.0027 | 0.006 |
CCM.FF-K3.2011
OPTIONAL MEASURAND Laser Doppler anemometer calibration using a primary standard
TRANSFER STANDARD Laser Doppler anemometer
Degrees of equivalence: offset Di and expanded uncertainty (k = 2) Ui
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
- |
- |
- |
||
| PTB | -0.0006 | 0.0015 | ||
| LNE-CETIAT | -0.0002 | 0.0009 | ||
| NMIJ | 0.0003 | 0.0018 | ||
| NIM | -0.0005 | 0.0023 | ||
| CMS | 0.0024 | 0.0025 |
| Metrology area, Sub-field | Mass and related quantities, Fluid Flow |
| Description | Bilateral key comparison of airspeed standards. |
| Time of measurements | 2023 - 2025 |
| Status | Report in progress, draft A |
| Measurand | Air |
| Transfer device | Ultrasonic Anemometer, Laser Doppler Anemometer, Pitot Tube |
| Comparison type | Key Comparison |
| Consultative Committee | CCM (Consultative Committee for Mass and Related Quantities) |
| Conducted by | SIM (Inter-American Metrology System) |
| Comments | Bilateral key comparison between NIST (pilot laboratory) and INMETRO, focusing on determining the degree of equivalence of national airspeed standards. Three transfer standards were employed: a Laser Doppler Anemometer (LDA), an ultrasonic anemometer, and a Pitot tube. |
| Pilot institute |
NIST
National Institute of Standards and Technology United States |
| Contact person | Joey Boyd 3019752943 |
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.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Ultrasonic anemometer
CCM.FF-K3.2011
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms, both dimensionless: Di = (xi - xR) and Ui (k=2) its expanded uncertainty, with Ui = 2 [ (ULab i / 2)2 - (UR / 2)2 ]1/2.
|
For each nominal air speed value, the key comparison reference value, xR, is computed as the weighted mean of the participants' results. Its expanded uncertainty (k = 2), UR, is computed as explained in section 7.2.1 of the Final Report, noting an additional contribution due to the instability of the transfer standard was included when calculating the uncertainty. |
Linking CCM.FF-K3.2011.1 to CCM.FF-K3.2011
The results obtained by VNIIM in the bilateral comparison CCM.FF-K3.2011.1 were linked to CCM.FF-K3.2011 via PTB who participated in both comparisons.
CCM.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Laser Doppler anemometer
CCM.FF-K3.2011
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms, both dimensionless: Di = (xi - xR) and Ui (k=2) its expanded uncertainty, with Ui = 2 [ (ULab i / 2)2 - (UR / 2)2 ]1/2.
|
For each nominal air speed value, the key comparison reference value, xR, is computed as the weighted mean of the participants' results. Its expanded uncertainty (k = 2), UR, is computed as explained in section 7.2.2 of the Final Report, noting an additional contribution due to the instability of the transfer standard was included when calculating the uncertainty. |
Linking CCM.FF-K3.2011.1 to CCM.FF-K3.2011
The results obtained by VNIIM in the bilateral comparison CCM.FF-K3.2011.1 were linked to CCM.FF-K3.2011 via PTB who participated in both comparisons.
CCM.FF-K3.2011
OPTIONAL MEASURAND Laser Doppler anemometer calibration using a primary standard
TRANSFER STANDARD Laser Doppler anemometer
|
The key comparison reference value, xR, and iIts expanded uncertainty (k = 2), UR, are computed for the overall dataset as explained in Section 8 of the CCM.FF-K3.2011 Final Report. xR = 0.9988 UR = 0.0008 |
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms, both dimensionless: Di = (xi - xR) and Ui (k=2) its expanded uncertainty, with Ui = 2[ (ULab i / 2)2 - (UR / 2)2 ]1/2.
CCM.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Ultrasonic anemometer
CCM.FF-K3.2011
xi measurement result reported by laboratory i
ULab i expanded uncertainty (k = 2) of xi
The measurement result, xi, reported by laboratory i is the ratio of the reference air speed measured by the laboratory which was obtained from five repeated measurements, to the air speed reading of the transfer standard. xi is a dimensionless quantity.
CCM.FF-K3.2011.1
The results obtained in CCM.FF-K3.2011.1 are listed in Section 7 of the CCM.FF-K3.2011.1 Final Report.
CCM.FF-K3.2011 and CCM.FF-K3.2011.1
MEASURAND Air speed
NOMINAL VALUE 0.5 m/s, 1 m/s, 2 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s, 30 m/s and 40 m/s
TRANSFER STANDARD Laser Doppler anemometer
CCM.FF-K3.2011
xi measurement result reported by laboratory i
ULab i expanded uncertainty (k = 2) of xi
The measurement result, xi, reported by laboratory i is the ratio of the reference air speed measured by the laboratory which was obtained from five repeated measurements, to the air speed reading of the transfer standard. xi is a dimensionless quantity.
CCM.FF-K3.2011.1
The results obtained in CCM.FF-K3.2011.1 are listed in Section 7 of the CCM.FF-K3.2011.1 Final Report.
CCM.FF-K3.2011
OPTIONAL MEASURAND Laser Doppler anemometer calibration using a primary standard
TRANSFER STANDARD Laser Doppler anemometer
The measurement results obtained by the PTB, LNE-CETIAT, NMIJ, NIM and CMS are listed in Appendix A of the CCM.FF-K3.2011 Final Report.
