Industrial eddy current sensors for touchless thickness measurement

Author

Plack, D. ; Clergeot, H. ; Santander, E.

Author_Institution

LESIR-ENS, Cachan, France

fYear

1989

fDate

1-5 Oct. 1989

Firstpage

1487

Abstract

An eddy current sensor has been developed and combined with fast, accurate measurement and digital electronic processing for high-rate simultaneous distance and thickness measurements. The system makes it possible to maintain measurement accuracy even with high-temperature coated samples, using a simple soft correction in the digital processing. It is demonstrated how a theoretical analysis based on physical modeling of the sensor has been used to improve the design and performance. Results of measurements in a particular application (galvanization) corresponding to very adverse industrial conditions (the temperature of the coated metal sheet is about 300 degrees C) are presented.<>

Keywords

computerised instrumentation; distance measurement; eddy currents; electric sensing devices; thickness measurement; computerised instrumentation; design; digital processing; distance measurement; eddy current sensors; measurement accuracy; modeling; performance; soft correction; thickness measurement; Coatings; Current measurement; Distance measurement; Eddy currents; Galvanizing; Metals industry; Particle measurements; Sensor phenomena and characterization; Tactile sensors; Thickness measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE

Conference_Location

San Diego, CA, USA

Type

conf

DOI

10.1109/IAS.1989.96839

Filename

96839