Force-free and contactless sensor for electromagnetic flowrate measurements

J. Priede, D. Buchenau, G. Gerbeth

    Research output: Contribution to journalArticlepeer-review

    32 Citations (Scopus)


    We present a novel design of a contactless flowmeter using a single cylindrical permanent magnet magnetised perpendicularly to its axis, about which it can freely rotate, and placed close to a duct with a liquid metal flow. The electromagetic torque on the magnet caused by the liquid metal flow sets the magnet into rotation. The equilibrium rotation rate, which is attained at a vanishing net electromagnetic torque on the magnet, depends only on the flowrate and the geometry of the system, while it is independent of the electromagnetic torque itself. A laboratory model of such a flowmeter has been built and tested on a liquid metal flow.

    Original languageEnglish
    Pages (from-to)451-458
    Number of pages8
    Issue number3
    Publication statusPublished - 2009

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Electrical and Electronic Engineering


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