Gas component detector
US4277439A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1979 |
| Grant date | Jul 7, 1981 |
| Priority date | — |
| Expiry date | Oct 18, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R17/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a gas component detector, a first gas component detecting element is formed by a metal oxide having an electric resistance depending on the concentration of gas components and on the temperature of a detected gas. A second gas component detecting element is formed by a metal oxide having the same temperature coefficient of electric resistance as that of the first gas component detecting element and having an electric resistance depending on the concentration of gas components and on the temperature of the detected gas and having a slower detection response time against the concentration of gas components in the detected gas than that of the first gas component detecting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.