Gas sensor with an especially explosion-proof housing

Details Gas sensor with an especially explosion-proof housing Gas sensor with an especially explosion-proof housing

2008-01-03

2011-11-08

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

08053728

ABSTRACT:
A gas sensor with a housing (1, 11) has an optical signal transmission to the environment of the gas sensor (10). At least one light-emitting diode (3) is arranged in the housing (1, 11) on the inner side of a disk (4) that is transparent to light. At least one optical light guide (5), for coupling in the light of the light-emitting diode (3), is arranged in the housing (1, 11) on the outer side of the disk (4) that is transparent to light. The optical light guide (5) extends up to the outer surface (6) of the housing (1, 11).

REFERENCES:
patent: 4850669 (1989-07-01), Welker et al.
patent: 5923035 (1999-07-01), Winkler et al.
patent: 2005/0127297 (2005-06-01), Starta et al.
patent: 2007/0192041 (2007-08-01), Goldstein et al.
patent: 197 13 928 (1998-04-01), None
patent: 8184556 (1996-07-01), None

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