Kenyon & Kenyon
Gas sampling device
 A gas sampling device comprises an elongated tube having a plurality of holes on the wall thereof a porous mesh surrounding the outer surface of said tube, a light source located at one end of said tube, a light sensor located at the other end of said tube, a first housing mounted at the one side of the tube for holding said light source, a second housing mounted on the other end of the tube for holding said light sensor, and a gas flowing channel formed in at least one of said first and second housing for communicating the interior and said the exterior of the tube thereby producing an action of thermal convection to promote the concentration of the gas in the interior of the tube to reach a stable balance condition rapidly. 
Industrial Technology Research Institute
G G G
G01N G01N G01N
inventional inventional inventional
Jack Yung Hsin Yao Min
Chen Chen Lin