Sensor assembly for a halogen gas leak detector

Details Sensor assembly for a halogen gas leak detector Sensor assembly for a halogen gas leak detector

1975-05-16

1976-11-09

Rolinec, R. V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

73 19, 315111, G01N 2762, H01J 724

Patent

active

039913600

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.

REFERENCES:
patent: 2652532 (1953-09-01), Zemany
patent: 3439262 (1969-04-01), Roberts
patent: 3471746 (1969-10-01), Roberts
patent: 3683272 (1972-08-01), Vissers et al.

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