G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 25/68 (2006.01) B08B 7/00 (2006.01)
Patent
CA 2085612
2085612 9218855 PCTABS00017 A method of cleaning a reflector mirror in an optical dew point meter that measures the dew point or frost point of a sample gas by a process including the steps of bringing the sample gas into contact with the reflector mirror whose temperature is variable, projecting condensed rays of light or laser light onto said reflector mirror, and detecting the change in the intensity of scattered light and/or reflected light on account of the dew or frost formed on said reflector mirror, characterized by bringing a CO2 gas or a CO2 containing gas into contact with the reflector while the latter is in a cooled state, thereby condensing CO2 on the surface of the reflector mirror, and the subsequent step of heating the reflector mirror to vaporize the CO2 is disclosed.
Ezell Edward F.
Kijima Takahiko
Makihara Akira
Nishizawa Junichi
Osaka Sanso Kogyo Ltd.
Riches Mckenzie & Herbert Llp
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