Inductive detection of the free surface of liquid metals. (5th October 2017)

• Record Type: Journal Article
• Authors: Zürner, Till; Ratajczak, Matthias; Wondrak, Thomas; Eckert, Sven
• Is Part Of: Measurement science & technology. Volume 28:Number 11(2017:Nov.)
• Publication Date: 2017-10-05
• Subjects: inductive measurement -- liquid metal -- surface topology; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/1361-6501/aa7f58
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: A novel measurement system to determine the surface position and topology of liquid metals is presented. It is based on the induction of eddy currents by a time-harmonic magnetic field and the subsequent measurement of the resulting secondary magnetic field using gradiometric induction coils. The system is validated experimentally for static and dynamic surfaces of the low-melting liquid metal alloy gallium–indium–tin in a narrow vessel. It is shown that a precision below 1 mm and a time resolution of at least 20 Hz can be achieved.