European Dissemination of the Ultra-low Temperature Scale, PLTS-2000

R. Ruby, D. Head, D. Cousins, Jakob Flokstra, Dick Veldhuis, S. Schöttl

Research output: Contribution to conferencePaperAcademic

1 Citation (Scopus)


Following the introduction of the provisional low-temperature scale from 0.9 mK to 1K, PLTS-2000, there is a need for primary and secondary thermometers and fixed points, which can disseminate the scale to users. This paper reports on the progress, within the EU collaborative project ‘ULT Dissemination’, in the development and evaluation of several devices with associated instrumentation. Principal among them are a current-sensing noise thermometer, a CMN thermometer adapted for industrial use, a Coulomb blockade thermometer, a second-sound thermometer, a 3He melting pressure thermometer for a direct realisation of the PLTS-2000. A superconductive reference device has also been developed, as a replacement for the NBS SRM-768 which is no longer available.
Original languageUndefined
Number of pages6
Publication statusPublished - 2003


  • Thermometry
  • METIS-214788
  • IR-75488
  • Temperature scale
  • PLTS-2000

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