Model # System II, Dual Edge Crack Detection and Single Edge Marking System

A RYECO Edge Crack Detection System utilizes a patented crack detection technology that combines high-speed optics with air jets to detect even the smallest cracks that are not yet open. As a crack passes through the ECD’s sensors, a small amount of focused air creates a small opening for the angled high-speed optics to detect the crack. The same air jets close the crack as it leaves the sensor, resulting in no touching or modifying of the crack. The crack opening only has to be 1/16"" (1.6 mm) to be detected by the sensor and must extend in from the edge at least 3/8"" (9.5 mm).

The response time of the high speed sensor is 50 microseconds. The sensor can be adjusted so that only larger cracks or fold-overs are detected. When the sensor is coupled with the RYECO Defect Marking System, all cracks in a jumbo roll are indicated as a colored ring to the winder or re-reeler operators. Typically, both edges of a paper machine are monitored for edge cracks and one edge (the edge facing the winder operator) is marked with a unique color for front and back cracks.

• Will provide information to eliminate edge cracks at their source.
• Can reduce paper machine and winder downtime due to undetected edge cracks.
• Allows you to immediately address edge cracks that are forming instead of waiting for a winder backlog.
• When used with a RYECO Defect Marking System can mark front and back cracks different colors.

• Can see separated and non-separated edge cracks.
• Provides a sensor response time of 50 microseconds for small crack detection at high speeds.
• Automatic edge tracking and sheet break retraction are standard.
• Sensors can be placed at the midpoint of the machine to narrow down the source of cracks.