Hall effect probe with exchangeable wear tips
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United States of America Patent
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Nov 10, 2015
Grant Date -
May 8, 2014
app pub date -
Nov 7, 2012
filing date -
Nov 7, 2012
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Abstract
Disclosed is a Hall sensor probe that configured to be coupled with one of a plurality of magnetic targets for measuring the thickness of a non-ferromagnetic wall. The probe comprises a magnetic field source, a Hall sensor, a concentrator and a main housing. The novel aspects of the probe include a wear tip that is exchangeably affixed onto the main-housing, leaving a permanent gap from and disjoined from the concentrator in a manner that transfers stress from the tip directly onto the main-housing. To serve every aspects of the primary objective, being it mechanical, thermal and operational, the material of the tip preferably has a fracture toughness higher than 20 MPa·m1/2, wear coefficient higher than 100, and a magnetic susceptibility lower than 0.001.
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