Long life reference electrode
An external, reference electrode is provided for long term use with a high temperature, high pressure system. The electrode is arranged in a vertical, electrically insulative tube with an upper portion serving as an electrolyte reservoir and a lower portion in electrolytic communication with the system to be monitored. The lower end portion includes a flow restriction such as a porous plug to limit the electrolyte release into the system. A piston equalized to the system pressure is fitted into the upper portion of the tube to impart a small incremental pressure to the electrolyte. The piston is selected of suitable size and weight to cause only a slight flow of electrolyte through the porous plug into the high pressure system. This prevents contamination of the electrolyte but is of such small flow rate that operating intervals of a month or more can be achieved. 2 figs.
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 4818366; A
- Application Number:
- PPN: US 7-079615
- OSTI ID:
- 7164560
- Resource Relation:
- Patent File Date: 30 Jul 1987
- Country of Publication:
- United States
- Language:
- English
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Long life reference electrode
A long-lived external Ag/AgCl reference electrode for use in high temperature/pressure environments