Patent ID: 7324192
Filing Date: 2008-01-29
Classification: G01M,G01N

Abstract:
1. A test apparatus for examining sheet-like components for perforations, comprising: a pressure chamber, which is open on one side and can be sealed in a gastight manner by a sheet-like component; a controllable test gas source connected to the pressure chamber; at least one radiation source arranged outside the pressure chamber, the at least one radiation source emitting electromagnetic radiation, in a beam path parallel to and beyond the opening, that includes at least one defined wavelength region; at least one transmitted-light sensor arranged outside the pressure chamber, and opposite the opening and the radiation source; and an evaluation apparatus connected to the transmitted-light sensor apparatus, the radiation source being manually controllable and/or automatically controllable by the evaluation apparatus; wherein at least one of the electromagnetic radiation source, the transmitted-light sensor apparatus, and the scattered-light sensor apparatus is movable parallel to the sheet-like component.