Patent ID: 9072996
Filing Date: 2015-07-07
Classification: B01D,G01N

Abstract:
1. A method for carrying out integrity tests of at least one filter element ( 3 , 3 ′) arranged within a filter housing ( 2 , 2 ′) between an unfiltrate space ( 9 ) and a filtrate space ( 10 ), with porous filter materials, in which means are provided for measuring sound generated by a test fluid when the test fluid flows through the filter element ( 3 , 3 ′), the method comprising: a) applying a test fluid that is a gas to a first side of the filter materials of the filter element ( b) measuring at least one of body-borne sound and vibrations caused by the test fluid flowing through the filter materials by means of sensors ( c) comparing at least one of the body-borne sound and the vibrations measured in step b) with at least one of the body-borne sound and the vibrations of an integral, identical filter element (