CPC G01N 33/0062 (2013.01) [G01N 33/0006 (2013.01); G01N 33/007 (2013.01)] | 17 Claims |
1. A method of detecting at least a partial blockage in a porous member separating an inner chamber of a device, in which at least one gas sensor responsive to target gas is positioned, and an ambient environment, comprising:
emitting one or more pressure waves within the inner chamber by displacing a volume of the inner chamber via displacement of a moveable element in fluid connection with the inner chamber to create a predetermined volume displacement of the inner chamber to emit the one or more pressure waves, measuring a response via a pressure sensor responsive to the one or more pressure waves positioned within the inner chamber, and determining if at least a partial blockage is present in the porous member based upon the response of the pressure sensor.
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