Verfahren und Vorrichtung zur Detektion von Verunreinigungen in einem textilen Prüfgut sowie Verwendung der Vorrichtung.

摘要

The test sample (G) is illuminated at at least two points (S1, S2) and the reflection from the test sample (G) and also the diameter of the sample or the change therein are measured by receivers (E1, E2). The measurement signals thus obtained are linked together and the signal resulting from this process is examined for differences from a predetermined value. If a difference is detected, there is an impurity in the test sample (G). For use in combination with an electronic yarn cleaner for the detection of foreign fibres in yarns.