Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device
Patent
1989-06-19
1991-02-05
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Electrolyte properties
Using a conductivity determining device
324 713, 324446, 324464, 204431, 376256, G01N 2726
Patent
active
049908553
ABSTRACT:
A conductivity probe able to withstand high water temperatures and pressures, and intense nuclear radiation is suitable for use within the core of the nuclear reactor. The probe is made with a ceramic insulator, such as sapphire, and a central electrode that is mounted on the insulator. A sleeve that supports the insulator and the central electrode is made from metals having a coefficient of thermal expansion compatible with the coefficient of thermal expansion of the insulator, such as Kovar. The central electrode and sleeve are bonded to the insulator by a brazed compressive seal that protects an internal conductor in the probe from intrusion of the reactor water. A counter electrode made from a corrosion resistant metal, such as Kovar, is attached to the sleeve so that it extends over the central electrode a fixed, spaced distance. A positioning and signal transfer arrangement operatively supports the sleeve and conveys electrical signals to and from the two electrodes.
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Niedrach Leonard W.
Taylor Dale F.
Davis Jr. James C.
Eisenzopf Reinhard J.
General Electric Company
Magee Jr. James
McGinness James E.
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