Gas component detector
US4294801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1980 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Jul 15, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas component detector for detecting a gas component in the exhaust gases includes a detector element of a metal oxide whose electrical resistance value varies suddenly depending on the gas component. The detector element is held on an electrically insulating and heat-resistant holding body and furthermore, the detector element is enclosed by a catalyst carrier body which is fixed to the holding body by an inorganic bonding adhesive. Since the catalyst carrier body is of a porous heat-resistant metal oxide, the exhaust gases to be detected are permitted to pass through the catalyst carrier body and the gas component is oxidated by the aid of a catalyst material carried on the carrier body. The environment of the detector element thus becomes a weak reducing environment thereby preventing the detector element from being reduced and deteriorated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.