Double-pass flue gas analyzer
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United States of America Patent
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-
Oct 22, 1985
Grant Date -
N/A
app pub date -
Jun 17, 1983
filing date -
Jun 17, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mixture of H.sub.2 O, CO.sub.2 and CO are measured in the same sample chamber by infrared radiation passing through the chamber and absorption filters passing a narrow band in their respective absorption curves to an infrared detector. Background radiation is zeroed by grounding the detector response when an opaque segment is disposed in the path. A reference filter detects drift which is automatically corrected.
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