Heated gas composition sensor structure
US4339320A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Oct 6, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4067
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To permit efficient heat transfer from a carrier tube (22) surrounding a tubular solid electrolyte body (11') having outer and inner electrodes (14, 18) applied thereto, the tubular heater element carrier body (22) supports a wire or resistance track heating element (25) at the inner surface thereof, the heater element (25) being spaced from the outer surface of the solid electrolyte tube (11') forming part of the sensor element (11) by a distance at the most of 1 mm, preferably less than 0.5 mm, the wall thickness of the heater element carrier tube (22) preferably being between 0.3 and 0.8 mm thick, the carrier tube being made of ceramic, such as aluminum oxide, or internally insulated metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.