Gas identification device

Details Gas identification device Gas identification device

2007-01-30

2007-01-30

Evans, F. L. (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

C356S432000

Reexamination Certificate

active

10482344

ABSTRACT:
An optical gas identification system including a measuring cell (20), a modulated light source (10), a microphone (22), and a signal amplifier (30). The light source (10) comprises a plurality of laser diodes (12) and can selectively illuminate the modulated light with specific wavelengths. The gas identification system can determine the object signal by use of the signal processor (70) and the database (60) with the various signal patterns.

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