Simultaneous measurement of distance and thickness of a thin metal plate with an electromagnetic sensor using a simplified model

Wuliang Yin, A. J. Peyton, Stephen J. Dickinson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This paper presents a simplified model which can describe the inductance change when an air-core coil is placed next to a thin nonmagnetic metallic plate. The model has two independent parameters and is valid for a range of thickness, conductivity, and lift-offs. Use of this new relationship provides a fast and accurate method to measure the distance and thickness simultaneously. Measurements made for a sample coil next to thin copper and aluminum plates of various thicknesses verified the theory and the proposed method. © 2004 IEEE.
    Original languageEnglish
    Pages (from-to)1335-1338
    Number of pages3
    JournalIEEE Transactions on Instrumentation and Measurement
    Volume53
    Issue number4
    DOIs
    Publication statusPublished - Aug 2004

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