Patent ID: 9470504
Filing Date: 2016-10-18
CPC Classification: B29C,G01B

Claim Text:
1. A sensor system for measuring a thickness of a flat material that is moved relative to the sensor system, said sensor system comprising: a first sensor device for measuring the thickness of the flat material, which is configured as a blown film bubble during the measuring, from outside the film bubble; and a device for generating an air cushion between the flat material and at least one side of the first sensor device that faces the flat material during the measuring, the first sensor device including (i) in a region of the air cushion, surface sections that include at least one of a porous material and a material that is provided with micro-holes, and (ii) a capacitive measuring device having at least two electrodes disposed on the at least one side that faces the flat material, the air cushion being located inside a nominal radius R of the film bubble, and the surface sections of the first sensor device that include at least one of the porous material and the material that is provided with micro-holes having holes with a hole size of less than 100 μm.