Solid state oxygen sensor
US5695624A · kind A · utility
8Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1996 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Jul 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4075
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A potentiometric oxygen sensor is formed having a logarithmic response to a differential oxygen concentration while operating as a Nernstian-type sensor. Very thin films of mixed conducting oxide materials form electrode services while permitting diffusional oxygen access to the interface between the zirconia electrolyte and the electrode. Diffusion of oxygen through the mixed oxide is not rate-limiting. Metal electrodes are not used so that morphological changes in the electrode structure do not occur during extended operation at elevated temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.