Electrode probe for use in aqueous environments of high temperat

Details Electrode probe for use in aqueous environments of high temperat Electrode probe for use in aqueous environments of high temperat

1989-05-01

1990-12-18

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

204400, 324724, 324 725, G01N 2702

Patent

active

049789210

ABSTRACT:
Disclosed is an electrode probe for employment in monitoring electrochemical potentials and which has a robust structure particularly suiting it for employment within the rigorous environment of the reactor core of a nuclear power facility. The electrode of the present invention is comprised of four major segments: a metal cap electrode, an alumina retainer, an annular metal sleeve, and a positioning and signal transfer assembly. The metal cap electrode has a tip portion and an annulus extending therefrom which defines a cavity having an interior surface. The alumina retainer has a base region with a sleeve attachment surface, an oppositely disposed cap securing portion nestably disposed within said cap electrode cavity and sealingly attached thereto. The retainer further has an axis channel penetrating therethrough from the base region to the cap securing portion. The annular metal sleeve is formed of metal exhibiting a coefficient of thermal expansion compatible with the alumina retainer and has an alumina retainer surface in sealing engagement with said retainer sleeve attachment surface and oppositely disposed outlet. An electrical conductor is in electrical connection with the cap electrode and extends through the retainer access channel and through the annular metal sleeve to the sleeve outlet. Finally, positioning and signal transfer assembly is associated with the sleeve outlet for providing support for the sleeve and for conveying electrical signals from the conductor.

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