| 摘要 |
<p>A moving sensor assembly measures the degree of gloss on both sides the surface of a paper or carton web. The sensors are separated from each side of the web from the glossy surface by an air cushion. The assembly incorporates an air cushion thickness measuring device and the respective degree of glazing. The sensor is an optical gloss sensor directed at both sides of the moving web. The light source (18) is sub-divided into a measuring beam and a reference beam. The light source is a white LED, light source, radioactive source or X-ray source. In a preferred embodiment, the assembly may also incorporate a formation sensor, a surface roughness sensor, specific-weight sensors, and X-ray fluorescence axial sensor.</p> |
