Electricity: measuring and testing – Electrolyte properties
Patent
1988-02-12
1990-09-11
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Electrolyte properties
324117R, G01N 2742, G01R 3300
Patent
active
049566105
ABSTRACT:
A system for measuring parameters in an environment having a metallic body positioned in an electrolytic medium includes a current density sensing device positioned adjacent the metallic body in a non-invasive manner. The device is sufficiently sensitive to measure current density in the milliamp per square centimeter range. A housing is provided for enclosing at least a portion of the current density sensing device in an electrically and thermally non-conductive manner. A computer is used for processing the data from the current density sensing device and wiring is provided for electrically interconnecting the two. The current density sensing device, which can be used separately from the apparatus, includes a toroidal transformer and a square wave magnetically coupled oscillator which drives the transformer. A pair of multi-section low pass filters are provided for monitoring the transformer. A fixed gain differential instrumentation amplifier is utilized for processing an output of the transformer. The processed transformer output is proportional to a current sensed by the transformer.
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Galm James M.
Podany Mark E.
Eisenzopf Reinhard J.
PGM Diversified Industries, Inc.
Regan Maura K.
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