Patent ID: 7459919
Filing Date: 2008-12-02
Classification: G01N

Abstract:
1. A device for checking the coating of light-metal parts, the device comprising: two contact electrodes, which are arranged on respective resilient probes, and which are placed onto the surface of the component to be tested under a certain contact pressure, an enabling device, which is coupled to the probes and generates an enable signal when the predefined contact pressure is reached, and a conductivity measuring device for measuring the conductivity of the surface of the component to be tested, the conductivity measuring device being coupled to the enabling device in order to pick up the enable signal, the conductivity measuring device measuring the conductivity of the surface of the component to be tested between the contact electrodes and, when the enable signal is present, generating an output signal which indicates the measured conductivity and distinguishing at least between a measured low conductivity value, which indicates a correct coating, and a measured high conductivity value, which indicates a lack of the coating.