Question
Download Solution PDFEddy current proximity sensors can detect _______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFEddy current proximity sensors
- Eddy current is a circular current that is induced by a conductor when it is kept in a changing magnetic field.
- Eddy current sensors are used to detect the presence of non-magnetic conductive material such as metal.
- Eddy current sensor operates based on the inductive eddy-current principle.
- When the sensing coil is supplied with an alternating current, it causes a magnetic field to form around the coil.
- If an electrically conducting material is placed in this field, an eddy current field is induced according to Faraday’s induction law.
- When the object moves, it causes a change in the impedance of the coil, which is proportional to the change in the distance between the sensor and the target.
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