Oil quality monitor sensor and system

Details Oil quality monitor sensor and system Oil quality monitor sensor and system

1991-03-04

1992-02-18

Wieder, Kenneth A.

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

324444, 324694, 324698, G01N 27413

Patent

active

050897802

ABSTRACT:
A sensor and system for monitoring the accumulation of contaminants in oil wherein the contaminants have an electrical conductivity which is different from the oil. An electrochemical cell is used to measure the alternating current conductivity of the oil to provide an indication of the amount of contaminants present in the oil. Acids and water are two common engine oil contaminants which are accurately monitored by this alternating current conductivity measurement system.

REFERENCES:
patent: 3502970 (1970-03-01), Thayer
patent: 4417212 (1983-11-01), Baum
patent: 4646070 (1987-02-01), Yasuhara et al.
patent: 4701713 (1987-10-01), Eaton et al.
patent: 4741204 (1988-05-01), Luck et al.
patent: 4791374 (1988-12-01), Yodice et al.
patent: 4808931 (1989-02-01), Ling

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