December 15, 2017 - Combining an eddy current sensor and a capacitive displacement sensor in one housing, the concept of the combiSENSOR from Micro-Epsilon is designed to enable enable precision thickness measurements of plastics.
The combiSENSOR from Micro-Epsilon performs non-contact thickness measurements on plastic film and insulators. An eddy current displacement sensor and a capacitive displacement sensor are combined in a single housing. This sensor concept enables one-sided thickness measurements of electrically non-conductive materials on metallic objects. This sensor is particularly suitable for use in the plastics industry, for example, to determine the thickness of plastic coatings on metal sheets or to measure applied adhesives.
The controller outputs the single signals as well as the difference between the capacitive and the eddy current measurements. Due to differential calculation of both sensor signals and integrated temperature detection, mechanical changes such as thermal expansion and deflections of the measurement arrangement are compensated for. The controller also features Ethernet and EtherCAT interfaces.