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Array sensor for web positioning and edge detection

25 October 2010

The new compact Ax20 array sensor from SICK delivers high performance web positioning and edge detection. The scanning optoelectronic system offers repeatable automated object detection with a resolution down to 50 microns, allowing precision control of web position even at high operating speeds. The device operates from one side of the web only, the measuring range of up to 30mm eliminating the need for fine adjustment and the visible light spot facilitating accurate alignment without need for teach in.

The compact Ax20 requires no reflector, so is easy to locate and mount, and is simple to adjust for optimum results. The sensor is immune to high levels of ambient light and reflective or transparent materials, so it to be used with a wide range of materials such as reflective films and metal coil.

As well as high speed web detection, the Ax20 line sensor can also be used for edge detection and thickness measurement. Other applications include counting small parts, determining positions and widths, and tracking glue beads.

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