Single-layer thickness measuring at multilayer plastic pipe or plate or layers e.g. PE-Al-PE heating tubes

摘要

The method has measuring amplified by testing with the resonance frequency of the respective metal, and with it also the layer thickness of the inner plastic layer or the plastic layers lying behind the metal layer can be determined. The layer thickness of the pipe interior or the layer thickness of the plastic layers, lying behind the metal layer, is determined by the determination of the signal maxima of the reflected signal.