Sensor assembly for a halogen gas leak detector
US3991360A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1975 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | May 16, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/19
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor assembly for a halogen gas leak detector characterized by including a tubular, porous, high purity Alumina (Al.sub.2 O.sub.3) element for supporting electrode and heater components in spaced-apart relationship relative to one another and a surrounding housing. The porous Alumina element is doped with an alkali metal by methods that cause the alkali metal to be distributed throughout the porous Alumina structure. The assembly is further characterized by incorporating a ribbon-like heater coil helically wound around the tubular Alumina element. In one embodiment of the invention the Alumina element is provided with a stepped end structure that effectively insulates the ends of an electrode mounted within the tubular element from the surrounding housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.