G - Physics – 01 – R
Patent
G - Physics
01
R
324/59
G01R 19/00 (2006.01) C23F 13/04 (2006.01) G01N 17/02 (2006.01) G01R 19/25 (2006.01)
Patent
CA 2009901
55,124 ABSTRACT OF THE DISCLOSURE An instrument for measuring cathodic protection voltage levels receives a signal representative of an externally applied, full-wave rectified power line frequen- cy cathodic protection potential, which is subject to electrical interference. The fundamental power line frequency component and odd harmonics of that fundamental component are removed to produce a filtered signal. Selected parameters of the filtered signal are measured to provide an indication of the adequacy of the cathodic protection potential.
Armstrong Randolph K.
Snider David E.
Steele David S.
Smart & Biggar
Xetron Corporation
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