Abstract:
A gas sensor, whose chamber uses filters and choppers in either a semicircular geometry or annular geometry, and incorporates separate infrared radiation filters and optical choppers. This configuration facilitates the use of a single infrared radiation source and a single detector for infrared measurements at two wavelengths, such that measurement errors may be compensated.
Patent Number:
6,969,857
Date Of Issue:
11/28/2005
Inventors:
Thomas E. Owen
Full Text: