Device for monitoring a web for tears occuring inside a dryer of a web-fed printing machine

摘要

A method of monitoring a web for tears occurring inside a dryer of a web-fed printing machine includes measuring the temperature of a running web by a thermal monitoring device in the proximity of an inlet to the dryer, and actuating a safety device when a sudden increase in the temperature of the web is detected by the thermal monitoring device; and device for performing the method.