Solid electrolyte sensor for monitoring the concentration of an element in a fluid particularly molten metal
US7335287B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Aug 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to an electrochemical sensor for determining the concentration of a group IA metal in a fluid such as molten metal. The sensor comprises a substantially pure quantity of the group 1A metal as a reference electrode (13) contained in a sensor housing (3), and a solid electrolyte constituting at least part of the sensor housing (3). The electrolyte is in electrical contact with the reference electrode (13) and the sensor is capable of operating at temperatures in excess of 973K. In a preferred arrangement, the sensor comprises a two part elongate conductor (15), a first part (17) of which extends from the reference electrode (13) into a refractory seal (11a), and a second part (19) of which extends from within the refractory seal (11a) externally of the sensor, the two parts (17, 19) being welded together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.