Reference electrode assembly and process for constructing
US5238553A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | May 11, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/301
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reference electrode for use in measuring electrochemical corrosion potential and pH of, for example, water in a drum boiler at supercritical temperatures and which is corrosive includes an alumina or zirconia tube which is packed with a bulk solid electrolyte. The electrolyte consists of a mixture of silver chloride and glass in an optimally 2 to 4 weight ratio or glass particles with silver chloride precipitated around each particle. A solidified silver chloride electrode interfaces with the bulk electrolyte and has embedded in it a conductive silver electrode which provides the electrical contact. Use of the foregoing provides an immobilized solid electrolyte which displays stability and integrity as the temperature and pressure cycles between extremes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.