Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1998-05-15
2000-10-24
Oda, Christine K.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
32420717, G01R 3302, G01B 700
Patent
active
061372811
ABSTRACT:
A back-to-back locator instrument includes a first portion with an array of two or more magnetic sensors, and an indicator arrangement. A second portion of the instrument includes an array of correspondingly located magnets. Each of the first and second portions includes a marking arrangement, which either allows marking of the underlying surface, or viewing of a mark on the surface for properly locating the instrument portion thereon. When the two portions are congruent or registered, the indicator arrangement gives a maximum indication of corresponding locations. In a particular use, corresponding locations on the inside and outside of a tank are identified. The indicator arrangement may include a separate indicator for each magnetic sensor. A flux concentrator may be associated with each magnetic sensor.
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Clifton W. B.
Phillips Scott G.
Venable Richard Allen
Fierke T. G.
Jolly Anthony
Lockheed Martin Corporation
Meise W. H.
Oda Christine K.
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