– 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
CIPM Task Group on the Digital SI

Terms of reference

  • To develop and establish a world-wide uniform, unambiguous and secure data exchange format for use in IoT networks based on the International System of Units (SI) described in the current SI Brochure.
  • To coordinate this effort with all relevant stakeholders by exploring and/or establishing suitable liaisons.
  • To propose suitable actions towards making the SI Brochure machine readable.


  • Prof. Joachim Ullrich


  • Mr Andy Henson (International Liaison and Communication Department, Director)  (BIPM)


  • Dr Ismael Castelazo  [CIPM member]
  • Dr Yuning Duan  [CIPM member]
  • Dr Héctor Laiz  [CIPM member]
  • Prof. Thomas Liew  [CIPM member]
  • Dr Martin J.T. Milton  [BIPM Director]
  • Dr James K. Olthoff  [CIPM Vice-President]
  • Dr Martyn Sené  [CIPM member]
  • Dr Alan Steele  [CIPM member]

  CIPM: Upcoming meetings
22–26 February 2021: Online Workshop: The International System of Units (SI) for FAIR digital data
22–26 March 2021: Meetings of the CIPM Sub-Committees and Working Groups

CIPM summary
General information
Consultative Committees
CIPM publications
Joint Working Groups
ad hoc Working Group on Governance
Strategic planning: BIPM and Consultative Committees
CIPM Sub-Committees and ad hoc Groups
CIPM election process
Members of the CIPM
CIPM Decisions and Recommendations
Photographs of the CIPM