Gas detector system
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United States of America Patent
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Dec 8, 2015
Grant Date -
Feb 12, 2015
app pub date -
Apr 10, 2013
filing date -
Apr 14, 2012
priority date (Note) -
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Abstract
A gas detector system includes a transmitter (1), which has a light source (3), which emits an analytical light beam (5). A transmitter lens assembly (7), to focus the analytical light beam (5) in an emission direction (9), includes a receiver (19, 19′) with a receiver lens assembly (21), defining a receiver focal point (27, 27′) and a receiver axis (23). A light mixing rod (29) defines a first rod axis (35) that extends from an inlet end (31), pointing toward the receiver lens assembly (21), to an outlet end (33) facing an analytical detector (39) and a reference detector (45). An analytical filter (43, 43′) is arranged in front of the analytical detector (39) as viewed from the receiver lens assembly (21). A reference filter (49, 49′) is arranged in front of the reference detector (45) as viewed from the receiver lens assembly (21).
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