G - Physics – 01 – N
Patent
G - Physics
01
N
73/104
G01N 1/22 (2006.01)
Patent
CA 1113277
METHOD AND APPARATUS FOR SAMPLING OF A PARTICLE-BEARING GAS ABSTRACT OF THE DISCLOSURE A method and apparatus for sampling a particle-bearing gas in which a vacuum is applied to the gas to generate a stream of gas, the flow of the stream is maintained constant, and particles are collected from the stream. A constant flow controller responsive to the static pressure of the gas in the stream pro- vides a flow restriction which gradually de- creases to compensate for a gradually increasing flow restriction caused by particles collecting on an initially particle-free collection filter located in the stream.
335979
Ahlquist Norman C.
Olin John G.
Gowling Lafleur Henderson Llp
Sierra Instruments Inc.
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