Electricity: measuring and testing – Magnetic – With compensation for test variable
Patent
1990-08-27
1992-08-04
Wieder, Kenneth A.
Electricity: measuring and testing
Magnetic
With compensation for test variable
324260, 324262, G01R 33025
Patent
active
051362414
ABSTRACT:
A device is provided for measuring unwanted electric and magnetic field induced voltages in a test lead of a remote measurement sensor. A test lead is encased within a magnetic shielding conduit and is electrically connected to a remote sensor. Another electrical lead, identical to the test lead and also encased within the magnetic shielding conduit, is terminated by a short circuit in the vicinity of the sensor. This electrical lead travels through the same environment as the test lead on its way to the measuring equipment. Electro-magnetic field interference along the path of this electrical lead is an indication of the electro-magnetic field interference along the path of the test lead.
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Blank Robert G.
Clark Steven K.
Edmonds Warren S.
Lall Prithvi C.
McGowan Michael J.
Oglo Michael F.
The United States of America as represented by the Secretary of
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