Techniques for accurate resistance measurement in the transient short-hot-wire method applied to high thermal-diffusivity gas

P. L. Woodfield, S. Moroe, J. Fukai, M. Fujii, K. Shinzato, M. Kohno, Y. Takata

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The accuracy of high-speed transient resistance measurements is an important issue particularly for measuring the thermal conductivity of high thermal-diffusivity (low-density) gases. This is because the hot-wire temperature rise against the logarithm of time is non-linear and can approach a steady state within the typical measurement time of 1 s. Two types of voltmeters are compared for use in the transient short-hot-wire method. Details of suitable procedures for taking accurate transient resistance measurements with either a two-channel high-speed analog/digital converter or a pair of integrating digital multimeters are presented.

Original languageEnglish
Pages (from-to)1748-1772
Number of pages25
JournalInternational Journal of Thermophysics
Volume30
Issue number6
DOIs
Publication statusPublished - Dec 2009

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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