Electromagnetic acoustic transducer fault detection circuit
AssigneeThe Babcock & Wilcox Company
InventorsDaniel T. MacLauchlan, Kenneth R. Camplin, Bradley E. Cox, Daniel Geier
Life of this patent
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Abstract
A fault detecting circuit for use with an electromagnetic acoustic transducer having an electrostatic shield and a wear surface for determining when the wear surface for contacting test surfaces has developed holes.
Claims16
A fault detection circuit for detecting surface wear in an assembly having a wear surface removably connected to an electromagnetic acoustic transducer for contacting a metallic test surface connected to a ground, an electromagnetic shield interposed between the wear surface and the electromagnetic acoustic transducer, the electromagnetic shield interposed between the wear surface and means for generating and receiving ultrasound from the metallic test surface, the circuit comprising a DC-powered circuit operatively connected to the electromagnetic shield for detecting a short circuit responsive to the wearing through of the wear surface.
Dependencies are inferred from the claim text.