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Monitoring system for turbomachinery

  • US 7,392,713 B2
  • Filed: 09/30/2002
  • Issued: 07/01/2008
  • Est. Priority Date: 09/30/2002
  • Status: Active Grant
First Claim
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1. A sensing system for monitoring a property of an electrically conductive moving element of turbomachinery, comprising:

  • a) a sensing system housing;

    b) a magnetic core contained within said sensing system housing;

    c) a coil positioned about at least a portion of said core, said coil being electrically connectable to a property data analysis device; and

    ,d) a first magnet and a second magnet oriented symmetrically with respect to the first magnet, each of said magnets being positioned about said coil and being positionable proximate a moving element of turbomachinery to be monitored, wherein a primary magnetic field is generated by said first and second magnets,wherein when said moving element enters said primary magnetic field a current is induced in said moving element, thus generating a time-variable magnetic field and commensurate voltage signal generated in said coil, said voltage signal being amplified by said magnetic core, said voltage signal providing an indication of a property of said moving element.

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