Ferromagnetic wear detector and method

Details Ferromagnetic wear detector and method Ferromagnetic wear detector and method

G - Physics

01

N

73/69, 340/124.3

G01N 27/72 (2006.01) G01N 15/06 (2006.01) G01N 33/28 (2006.01)

Patent

CA 1261170

ABSTRACT OF THE DISCLOSURE A detector for producing an electrical signal proportional to the concentration of ferromagnetic particulate material in a fluid stream comprises a sensing coil arranged to form -the inductance coil of and adapted to be connected to a radio frequency oscillator arranged to produce an electrical signal at a base frequency, a magnetic trap for producing a magnetic field and a support for supporting the sensing coil and the magnetic trap in juxtaposition to one another such that, when the coil is disposed within or proximate the fluid stream and electrically connected to the oscillator, energization of the magnetic trap causes ferromagnetic particulate material proximate the coil to be attracted toward the coil resulting in a deviation of the frequency of the signal from the base frequency proportional to the concentration of ferromagnetic particulate material in the fluid stream. The detector has particular utility in monitoring wear in machines employing a lubricating fluid for lubricating ferromagnetic components which produce ferromagnetic particulate wear debris during operation.

492775

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