Fluid contaminant detection device

Details Fluid contaminant detection device Fluid contaminant detection device

2007-01-22

2009-08-18

Larkin, Daniel S (Department: 2856)

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

C073S061410, C324S689000

Reexamination Certificate

active

07574899

ABSTRACT:
A contaminant detector disposed within a base fluid for detecting the presence of a contaminating fluid includes a conductive core, a conductive sensor probe extending from the core in non-conductive relation, and a circuit board within the core. The circuit board is electrically connected to the sensor probe and electrically insulated from the core. Electrical power applied to the core creates a closed field loop for measuring the localized capacitance of the base fluid. When sufficient contaminating fluid exists in the base fluid to change the localized capacitance, an alarm is sounded to indicate the presence of the contaminating fluid.

REFERENCES:
patent: 4316174 (1982-02-01), Sutton et al.
patent: 4349882 (1982-09-01), Asmundsson et al.
patent: 5033289 (1991-07-01), Cox
patent: 6885199 (2005-04-01), Desmier et al.

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