OPTIMISATION OF LOW FREQUENCY EDDY CURRENT SENSORS USING IMPROVED INDUCTIVE COILS AND HIGHLY SENSITIVE AMR AND GMR SENSOR MODULES

S. Cherepov, O. Hesse, G. Mook, S. Pankratyev, V. Uchanin

Abstract

Optimisation of low frequency eddy current probes was performed using traditional inductive coils and commercially available AMR and GMR sensors and sensor modules. Results of three groups are presented demonstrating that such kind of eddy current probes show high penetration and sensitivity at low testing frequencies. The lack of objective criteria for comparison had to be stated. A Round Robin test is proposed between the presented groups with more objective criteria to be established before and during the test.

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IMEKO-TC4-2004-105.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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