One-sided thickness measurement of films
For one-sided thickness measurement of insulators, the combiSENSOR from Micro-Epsilon is used. This sensor matches two measuring techniques: a capacitive and an inductive sensor (eddy current). The eddy current sensor penetrates the coating and measures the distance to a metallic material underneath it, e.g. a transport roller. Simultaneously, the capacitive sensor measures the thickness of the coating (e.g. graphite). The thickness is determined based on the difference of both sensor signals. In addition to absolute thickness measurement, high measurement accuracy and compensation for distance variations offer further benefits.
Strip thickness measurement using confocal chromatic sensors
Confocal chromatic distance sensors detect the thickness of different objects using the differential thickness method. The measurement can be performed on different targets, e.g. plastic films, metal strips or coated materials. The use of confocal chromatic sensors enables a measurement resolution in the submicron range. Due to their high measuring rate, even high speed processes can be monitored reliably. Confocal sensors are typically used to monitor and control wet coating processes, but are also suitable for thickness monitoring in dry processes. In addition to individual sensors, Micro-Epsilon also offers complete systems with integrated sensor technology, mechanics and auto-calibration.
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