CCAUV.VK3, AFRIMETS.AUV.VK3, APMP.AUV.VK3 and EURAMET.AUV.VK3
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Magnitude
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
Selected graphs of equivalence for eight of the frequency values
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Phase
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
Selected graphs of equivalence for eight of the frequency values
CCAUV.VK3, AFRIMETS.AUV.VK3, APMP.AUV.VK3 and EURAMET.AUV.VK3
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Magnitude
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
Degrees of equivalence: D_{i} and U_{i}
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Results are presented under A4 printable format in Summary Results (PDF file).
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Phase
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
Degrees of equivalence: D_{i} and U_{i}
Results are presented under A4 printable format in Summary Results (PDF file).
Metrology area, Subfield  Acoustics, Ultrasound, Vibration, Vibration 
Description  Vibration acceleration 
Time of measurements  2010  2011 
Status  Approved for equivalence 
Final Reports of the comparisons  
References  
Measurand  Modulus of the accelerometer voltage sensitivity Nominal value: 50 mV/m/s^{2} 
Transfer device  Accelerometer 
Comparison type  Key Comparison 
Consultative Committee  CCAUV (Consultative Committee for Acoustics, Ultrasound and Vibration) 
Conducted by  AFRIMETS (IntraAfrica Metrology System) 
Comments  This comparison was carried out as AFRIMETS.AUV.VS2 and became AFRIMETS.AUV.VK3 on 19 December 2018. Results published on 26 December 2018 AFRIMETS.AUV.VK3 and APMP.AUV.VK3 results are linked to those of CCAUV.VK3 Lowfrequency acceleration, complex sensitivity

Pilot institute 
NMISA
National Metrology Institute of South Africa South Africa 
Contact person  C.S. Veldman +27 12 841 4008 
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CCAUV.VK3, AFRIMETS.AUV.VK3, APMP.AUV.VK3 and EURAMET.AUV.VK3
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Magnitude
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
CCAUV.VK3
The computation of the key comparison reference value at each frequency, x_{R,M}, and of its expanded uncertainty, U_{R,M} (k = 2), is explained in Section 8 of the Final Report and is based on a weighted mean.
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms: D_{i} where D_{i} = x_{i}  x_{R,M}, and its expanded uncertainty U_{i} (k = 2), computed as explained in Section 8 of the Final Report. 
Pairwise degrees of equivalence may be calculated taking into account possible correlations. 
Linking of APMP.AUV.VK3 to CCAUV.VK3
The linking was made via NIM, NMIA, NMISA, KRISS and NMIJ/AIST, having participated in both comparisons.
Linking of AFRIMETS.AUV.VK3 to CCAUV.VK3
The linking was made via NMISA, having participated in both comparisons.
Linking of EURAMET.AUV.VK3 to CCAUV.VK3
The linking was made via BKSVDPLA, GUM, LNE, METAS and PTB, having participated in both comparisons.
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Phase
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
The computation of the key comparison reference value at each frequency, x_{R,P}, and of its expanded uncertainty, U_{P,M} (k = 2), is explained in Section 8 of the Final Report and is based on a weighted mean.
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms: D_{i} where D_{i} = x_{i}  x_{R,P}, and its expanded uncertainty U_{i} (k = 2), computed as explained in Section 8 of the Final Report. 
Pairwise degrees of equivalence may be calculated taking into account possible correlations. 
CCAUV.VK3, AFRIMETS.AUV.VK3, APMP.AUV.VK3 and EURAMET.AUV.VK3
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Magnitude
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
CCAUV.VK3
The laboratories' individual measurement may be found in Sections 7.1 and 7.2 of the CCAUV.VK3 Final Report.
AFRIMETS.AUV.VK3
The laboratories' individual measurement may be found in Section 7 of the AFRIMETS.AUV.VK3 Final Report.
APMP.AUV.VK3
The laboratories' individual measurement may be found in Section 9 of the APMP.AUV.VK3 Final Report.
EURAMET.AUV.VK3
The laboratories' individual measurement may be found in Section 7 of the EURAMET.AUV.VK3 Final Report.
DEVICE : Lowfrequency vibration transfer standard
MEASURAND : Phase
FREQUENCIES : 0.1 Hz, 0.125 Hz, 0.16 Hz, 0.2 Hz, 0.25 Hz, 0.315 Hz, 0.4 Hz, 0.5 Hz, 0.63 Hz, 0.8 Hz, 1 Hz, 1.25 Hz, 1.60 Hz, 2 Hz, 2.5 Hz, 3.15 Hz, 4 Hz, 5 Hz, 6.3 Hz, 8 Hz, 10 Hz, 12.5 Hz, 16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz
The laboratories' individual measurement may be found in Sections 7.1 and 7.2 of the Final Report.