EP 2747881 A1 20140702 - METHOD FOR TESTING THE INTEGRITY OF A HYDROPHOBIC, POROUS DIAPHRAGM FILTER
Title (en)
METHOD FOR TESTING THE INTEGRITY OF A HYDROPHOBIC, POROUS DIAPHRAGM FILTER
Title (de)
VERFAHREN ZUM TESTEN DER INTEGRITÄT EINES HYDROPHOBEN, PORÖSEN MEMBRANFILTERS
Title (fr)
PROCÉDÉ SERVANT À TESTER L'INTÉGRITÉ D'UN FILTRE À MEMBRANE POREUX HYDROPHOBE
Publication
Application
Priority
- DE 102011111050 A 20110824
- EP 2012002700 W 20120626
Abstract (en)
[origin: WO2013026507A1] The invention relates to a method for testing the integrity of a hydrophobic, porous diaphragm filter (42), comprising the following steps: - arranging the diaphragm filter (42) in the non-wetted state in a test housing (30), which is resistant to internal pressure, in such a way that the diaphragm filter (42) divides an upstream housing region (30a), which is provided with a liquid feed line (16), from a downstream housing region (30b), - completely filling the upstream housing region (30a) with a test liquid which does not wet the hydrophobic diaphragm filter (42), - incompletely filling a reservoir (12) which is resistant to internal pressure and which is connected to the liquid feed line (16) of the test housing (30) and to a regulable compressed air supply (20, 22, 24, 26), - charging the reservoir (12) with compressed air at a constant pressure below the intrusion pressure of the diaphragm filter, - determining a substance flow at the reservoir (12) as a measure for the amount of test liquid ingressing into and/or passing through the diaphragm filter (42). The invention is characterized in that the substance flow to be determined is a mass flow out of the reservoir (12), this being determined as a decrease in the overall weight of the reservoir (12).
IPC 8 full level
B01D 65/10 (2006.01)
CPC (source: EP US)
B01D 65/102 (2013.01 - EP US); G01N 15/0826 (2013.01 - US)
Citation (search report)
See references of WO 2013026507A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102011111050 A1 20130228; DE 102011111050 B4 20131017; EP 2747881 A1 20140702; US 2014298893 A1 20141009; WO 2013026507 A1 20130228
DOCDB simple family (application)
DE 102011111050 A 20110824; EP 12732535 A 20120626; EP 2012002700 W 20120626; US 201214240645 A 20120626