Web break sensor

The heart of this system, an SE18/DSA-2 sensor, is a patented, specially developed device that guarantees total reliability. To compensate changes in the web width or movement of the web edge, two laser beams sense the edges continuously and actively adjust the position of the web break sensor. By making sure that the sensor position is always optimum in relation to the edge of the web, they facilitate a lightning reaction in an emergency situation. Web breaks are detected before other web monitoring sensors have had a chance to sense a web break between the last printing unit and the chill roller.