Sick AT20 Array Sensor

The AT 20 Array Sensor detects the lateral position of webs using the web edge.  As a scanning opto-electronic system, the Ax20 scans the web from one side only and therefore works more flexibly and reliably than conventional fork sensors.  As a scanning line sensor, the AT20 also detects the web position, irrespective of the edge. A line on the web is taken through the sensor light spot. The white light illumination ensures very good contrast resolution resulting in reliable performance and results.