公开(公告)号：US20200166495A1

公开(公告)日：2020-05-28

申请号：US16199019

申请日：2018-11-23

Applicant: MSA TECHNOLOGY, LLC

Inventor： Alexander Stokoe ,  Harry Bullivant ,  Shane. Kelleher

IPC: G01N33/00

Abstract: A method of detecting at least a partial blockage in a porous member separating a first volume from a second volume or inner chamber of a device includes emitting pressure waves within the inner chamber by changing a volume of the inner chamber, measuring a response via a pressure sensor responsive to 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.