Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reissue Patent
2006-07-25
2006-07-25
Patidar, Jay (Department: 2862)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S202000, C324S242000, C324S262000
Reissue Patent
active
RE039206
ABSTRACT:
An instrument and method for providing accurate and reproducible measurement of absolute properties of a material under test without using conductivity or crack calibration standards. The instrument has a sensor designed to minimize unmodeled parasitic effects. To accomplish this, the sensor has one or more of the following features: dummy secondary elements located at the ends of a primary winding meandering, setting back of the sensing element from a connecting portion of the primary winding, or various grouping of secondary elements. The sensing elements of the sensor can be connected individually or in differential mode to gather absolute or differential sensitivity measurements. In addition, the instrumentation is configured such that a significant portion of the instrumentation electronics is placed as close to the sensor head to provide independently controllable amplification of the measurement signals therein reducing noise and other non-modeled effects.
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Goldfine Neil J.
Schlicker Darrell E.
Washabaugh Andrew P.
Hamilton Brook Smith & Reynolds P.C.
Jentek Sensors, Inc.
Patidar Jay
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