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Eddy current sensor

  • US 6,288,536 B1
  • Filed: 02/02/1999
  • Issued: 09/11/2001
  • Est. Priority Date: 08/03/1996
  • Status: Expired due to Term
First Claim
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1. Eddy current sensor with an evaluation circuit, with at least one measuring coil, and with at least one compensat ing coil, wherein the measuring coil a nd the compensating coil can be supplied with alternating currenr, and the compensating coil is arranged in direct vicinity of the measuring coil, so that the electromagnetic fields of the compensating coil and measuring coil are orthogonal to each other, wherein the measuring coil has an annular form and the compensating coil is wound around the measuring coil in the form of a torus, so that th e compensating coil is in thermal c ontact with the measu ring coil.

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