Method and apparatus for detecting the oxygen content of a gas
US6368868B1 · kind B1 · utility
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3References
13Claims
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Assignee
Inventor
Key dates
| Filing date | Nov 22, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Nov 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N10/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for detecting oxygen concentration in a gas, a functional material in the form of a layer or film made of a semiconducting metal oxide, whose thermoelectric power can be represented as a function of partial oxygen pressure, is subjected to the gas to be analyzed. A temperature difference is created between two points on the functional material, and the voltage difference between the two points of the functional material that are at different temperatures is determined as a measure of oxygen concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.