| 摘要 |
The invention relates to a test device (1) for measurement of a permeability and/or homogeneity of a gas- and/or liquid-permeable filter (14) or catalyst, especially of a filter (14) or catalyst in an exhaust section of a motor vehicle. According to the invention, an optionally flexible housing (2) with a first gas- and/or liquid-permeable end (3) and a second end (4) and at least one pressure sensor (5) arranged within the housing (2) and at least one regulating device (6) are provided, the regulating device (6) being useable to transport air and/or a liquid with a variable volume or mass flow rate or elevated pressure to the first end (3) of the housing (2) and/or away from it with variable volume or mass flow rate or elevated pressure. An inventive test device (1) in a simple design can be used to accurately determine a permeability and/or homogeneity of the filter (14). The invention further relates to a method for measuring a permeability and/or homogeneity of a gas- and/or liquid-permeable filter (14) or catalyst. |
