Reference electrode and a pair of electrodes for detecting the a

Details Reference electrode and a pair of electrodes for detecting the a Reference electrode and a pair of electrodes for detecting the a

1990-09-13

1992-09-08

Harvey, Jack B.

Electricity: measuring and testing

Electrolyte properties

Using a ph determining device

324 711, 204433, G01N 27416

Patent

active

051461692

ABSTRACT:
A reference electrode is formed of lead, zinc, tin, indium, cadmium, magnesium, or any alloy thereof. A pair of electrodes comprising the reference electrode and a responding electrode made of a conductive solid, when placed in oil, develop a potential difference varying with the acidity or basicity of the oil and thus enable the efficient determination of the acidity or basicity.

REFERENCES:
patent: 4988418 (1991-01-01), Beck et al.
Patent Abstracts of Japan, JP-A-56-47614, Apr. 30, 1981, "Automatic Oil Replacing Device".
Patent Abstracts of Japan, JP-A-61-259158, Nov. 17, 1986, "Method for Detecting Acidity and Basicity of Oil and Reference Electrode".
Patent Abstracts of Japan, JP-A-62-25250, Feb. 3, 1987, "Detection of Acidity and Basicity of Oil and Reference Electrode".
Patent Abstracts of Japan, JP-A-61-20851, Jan. 29, 1986, "Device for Judging Degradation of Lubrication Oil".

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