Bilateral international inductance comparison using traveling standards in thermoregulated enclosures

Torsten Funck, Harald Bothe, Axel Kölling, Alexandre Satrapinski, Esa-Pekka Suomalainen

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


Standards with toroidal windings are traditionally used for international comparisons of inductance. The achieved uncertainties of the comparisons are dominated by the rather high temperature coefficient of the traveling standards. Hence, thermoregulated enclosures were developed at PhysikalischTechnische Bundesanstalt (PTB) a few years ago. These have now been refined and their suitability for the transportation of standards has been proven in a bilateral comparison between PTB and VTT Technical Research Centre of Finland Ltd. The agreement was excellent, while the overall uncertainty of the comparison varied from 14 to 62μH/H in the frequency range 100 Hz-2kHz.
Original languageEnglish
Article number7801843
Pages (from-to)1511-1515
JournalIEEE Transactions on Instrumentation and Measurement
Issue number6
Publication statusPublished - 1 Jun 2017
MoE publication typeA1 Journal article-refereed


  • Inductance measurement
  • International collaboration
  • Measurement uncertainty
  • Temperature control
  • Thermostats


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