What are Eddy current sensors? | Skill-Lync
Eddy currents can be used to measure the minute changes that happen in big machines. They can detect any change in shape, and hence can be used as a cautious system to prevent any major accidents on big sites from happening.
Eddy current sensors consist of a conductor through which an alternating electric field is flowing, and because of this, the magnet develops a magnetic field of its own. When a metal is brought around the current-carrying conductor, the metal gets induced with current, known as eddy currents. This conductor, having developed an induced current, now has a magnetic field of its own which opposes the magnetic field of the current producing it.
This relation is used in many machines. If there is a change in the flux noted, then the machine is checked for any flaws.
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References-
Micro-Epsilon Messtechnik. Video used under creative commons license/ • Eddy current sensors - operating principle...
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Bertall & Cie. / Public domain/https://upload.wikimedia.org/wikipedi...
• Eddy current sensors - operating principle...