Ruggedized gas detector
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United States of America Patent
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Dec 12, 1995
Grant Date -
N/A
app pub date -
Dec 5, 1994
filing date -
Dec 5, 1994
priority date (Note) -
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Abstract
A ruggedized gas detector having two or more perforated concentric cylinders and having a concentric screen inside the innermost cylinder. A pair of perforated tubes are positioned inside the perforated screen, and an infrared light source is placed adjacent one end of one of the tubes and an infrared sensor is placed adjacent the other tube. A pair of inclined mirrors are positioned adjacent the respective other ends of the two tubes, and an optical light path is created from the IR source through a first tube, reflected by the mirrors to a return optical path through the second tube and ultimately to the IR sensor.
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