– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
Search facility:

| Site map | News | Contact us
CCAUV Working Group for Key Comparisons (CCAUV-KCWG)

The Key Comparisons Working Group of the CCAUV supports the CC within the objective to establish and maintain a global compatibility in the measurements in the field of acoustics, ultrasound and vibration. It takes special responsibility for a consistent implementation of the requirements of the CIPM MRA in terms of comparisons between NMIs and DIs within the scope of the MRA.

Within this objective, its tasks are to:

    identify the need and feasibility of CCAUV key comparisons (KCs) and supplementary comparisons (SCs);

    review and approve technical protocols for all comparisons that are intended to be used for the subsequent support of CMC claims, i.e. CIPM KCs, RMO KCs and SCs;

    give advice on the analysis of KCs, calculation of KCRVs and linking procedures;

    review and comment Draft B reports prior to their submission to the CCAUV for approval;

    contribute to the SPWG on matters of key comparisons;

    give advice in case of disagreement during a comparison.


  • Dr Gustavo Ripper  (INMETRO)


  • Dr Ryuzo Horiuchi  (NMIJ/AIST)


  • Dr Gianna Panfilo  (BIPM)


  • Dr Thomas Bruns (PTB)
  • Dr Danuta Dobrowolska (GUM)
  • Dr Peter Harris (NPL)
  • Dr Lars Nielsen (DFM)
  • Dr Akihiro Ota (NMIJ/AIST)
  • Dr Andrés Pérez Matzumoto (CENAM)
  • Dr Qiao Sun (NIM)
  • CENAM (Centro Nacional de Metrología)
  • DFM (Danish Fundamental Metrology Ltd)
  • GUM (Central Office of Measures)
  • INMETRO (Instituto Nacional de Metrologia, Qualidade e Tecnologia)
  • NIM (National Institute of Metrology)
  • NMIJ/AIST (National Metrology Institute of Japan, AIST)
  • NPL (National Physical Laboratory)
  • PTB (Physikalisch-Technische Bundesanstalt)
  • Dr Gustavo Ripper (INMETRO); Chairman
  • Dr Ryuzo Horiuchi (NMIJ/AIST); Vice-Chair

  • Dr Thomas Bruns (PTB)
  • Dr Danuta Dobrowolska (GUM)
  • Dr Peter Harris (NPL)
  • Dr Lars Nielsen (DFM)
  • Dr Andrés Pérez Matzumoto (CENAM)
  • Dr Akihiro Ota (NMIJ/AIST)
  • Dr Qiao Sun (NIM)

  CCAUV: Upcoming meetings
4–8 October 2021: 13th meeting of the CCAUV and related meetings

CCAUV summary
General information
CCAUV members
CCAUV working groups
CCAUV publications and bibliography
CCAUV strategy
KC and SC registration form
Pilot studies in AUV
Publication form for Metrologia Tech. Supp.
Classification of services in AUV
Photographs of the CCAUV
Open documents
CCAUV documents
Peer reviewer template