Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1995-01-04
1996-08-27
Willis, Davis L.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
356440, G01N 2161
Patent
active
055503756
ABSTRACT:
Gases can be selectively detected by the utilization of a infrared spectrometer via their specific absorption in the infrared spectral range. The sensor of the present invention is developed for continuously controlling a gaseous stream or a space filled with gas with the sensor being a single-piece shaped part manufactured as a microstructured body. The space filled with gas to be tested is between a mirror grating and entrance and exit slits for IR-radiation. The sensor is compact and robust, suitable for portable instruments, and can be manufactured at low cost and in large numbers. The sensor can also be made of metal and can be used even at an increased temperature. By using the sensor of the present invention, the safety of systems in which flammable, toxic or other gases are contained or may occur can be considerably increased in an economic manner.
REFERENCES:
patent: 3702736 (1971-06-01), Coggeshall
patent: 5453620 (1995-09-01), Wadsworth et al.
Heinrich Lothar
Heyde Wolfgang A. D.
Landwehr Dierk
Peters Ralf-Peter
Rogner Arnd
Hanig Richard
microParts
Willis Davis L.
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