Measurement of fabric dynamic gas permeability

The appts. to measure the dynamic gas permeability of a woven fabric, and especially air permeability, has a measurement chamber (1) with a holder (2) for the fabric (3) under test which divides the chamber (1) into a section (11) for the gas entry and a section (12) for measurement. At least one pr...

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Bibliographische Detailangaben
Hauptverfasser:	THAM, REINHARD., 79312 EMMENDINGEN, DE, NAHME, HARTWIG., 79288 GROTTENHEIM, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The appts. to measure the dynamic gas permeability of a woven fabric, and especially air permeability, has a measurement chamber (1) with a holder (2) for the fabric (3) under test which divides the chamber (1) into a section (11) for the gas entry and a section (12) for measurement. At least one pressure monitor (4) is in each section (11,12), to deliver signals to an evaluation unit. The gas is introduced into a section of the measurement chamber as a pressure pulse. The evaluation unit takes the signals from the pressure monitor, following the pressure pulse, to determine the dynamic permeability.