– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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CCT Working Group for Contact Thermometry (CCT-WG-CTh)

Terms of reference and tasks

The terms of reference of WG-CTh are to review and document progress in contact thermometry, with a focus on thermodynamic temperature determination and defined scales. The list of tasks has been updated according to the discussions at the WG-SP meeting at 31 May 2017 and is given below:


  • reviewing and reporting on measurements of T – T90 and T – T2000;

  • recommending key comparisons in contact thermometry to the CCT;

  • reviewing the research and application of primary contact thermometers to realize the kelvin;

  • updating the Mise en Pratique of the definition of the kelvin;

  • updating the Guide to the Realization of the ITS-90;

  • reviewing novel contact thermometry techniques.


  • Dr Christof Gaiser  (PTB)


  • Dr Roberto Gavioso (INRIM)
  • Dr Vladimir Gennadiy Kytin (VNIIFTRI)
  • Dr Tohru Nakano (NMIJ/AIST)
  • Dr Laurent Pitre (LNE-Cnam)
  • Prof. Anatolii Pokhodun (VNIIM)
  • Dr Patrick Rourke (NRC)
  • Dr Weston Tew (NIST)
  • Mr Robin Underwood (NPL)
  • Dr Rod White (MSL)
  • Dr Inseok Yang (KRISS)
  • Dr Jintao Zhang (NIM)
  • Co-opted members:
    - Dr Richard Rusby (NPL)
    - Dr Bernd Fellmuth (PTB)
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