Oxygen concentration-sensing device and the method of producing the same
US4476008A · kind A · utility
17Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1983 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Oct 11, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/407
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An oxygen gas concentration-sensing device comprises a solid electrolyte body which is prepared from an oxygen ion-permeable metal oxide and whose first surface is exposed to the gas to be sensed and the second surface is exposed to a reference gas. First and second electrodes are respectively pressed against the first and second surface of the solid electrolyte body. The first electrode exposed to the gas is covered with a porous gas diffusion-resisting layer. This gas diffusion-resisting layer is chosen to have an average pore-size ranging from 300 .ANG. to 400 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.