Chemistry: physical processes – Physical processes – Crystallization
Patent
1979-08-03
1980-12-23
Serwin, R. E.
Chemistry: physical processes
Physical processes
Crystallization
73 27R, 324 71SN, 338 34, 422 90, 422 98, G01N 2704, H01C 700
Patent
active
042407990
ABSTRACT:
A means for detecting and/or measuring the presence of ozone in an atmosphere such as air. A solid state sensor that is capable of changing its conductivity in the presence of ozone is located within a housing along with an ultraviolet lamp and a stream of the sampled atmosphere caused to pass over the sensor. After exposure to ozone in the atmosphere, the sensor is restored to its initial or start of sensing state by flooding it with ultraviolet radiation produced by the lamp.
REFERENCES:
patent: 3611243 (1971-10-01), Hardtl
patent: 3625756 (1971-12-01), Taguchi
patent: 3695848 (1972-10-01), Taguchi
patent: 3699803 (1972-10-01), Sumi et al.
patent: 3778229 (1973-12-01), Webster et al.
patent: 4001756 (1977-01-01), Heijne
patent: 4039941 (1977-08-01), Morrison
patent: 4045178 (1977-08-01), Okiraka
Energy for Independence, Inc.
Serwin R. E.
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