G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 1/22 (2006.01) G01N 21/05 (2006.01) G01N 21/35 (2006.01) G01N 33/00 (2006.01) G01N 21/03 (2006.01) G01N 21/85 (2006.01)
Patent
CA 2127106
2127106 9313401 PCTABS00024 A gas sample chamber (10) for use in a gas analyzer consists of an elongated hollow tube (21) having an inwardly-facing specularly-reflective surface (22) that permits the tube to function also as a light pipe for conducting radiation from a source (12) to a detector (14) through the sample gas. A number of apertures (24) in the wall of the elongated hollow tube permit the sample gas to enter and exit. Particles of smoke and dust of a size greater than 0.1 micron are kept out of the chamber by use of a semi-permeable membrane (28) that spans the apertures in the hollow tube. Condensation of the sample gas components is prevented by heating the sample chamber electrically to a temperature above the dew point of the component of concern. In one embodiment, more than one detector (40, 42, 44) are spaced around the periphery of the elongated hollow tube adjacent one end of it. In another embodiment, more than one detector (56, 58, 60) are spaced along the length of the elongated hollow tube.
Borden Ladner Gervais Llp
Gaztech International Corporation
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