Procemex web inspection system provides you continuous detection of all defects plus a seamless integration to Procemex web monitoring system.
There has existed, from the first paper machine, a need to identify and understand visual sheet defects, which must be detected and identified in real-time and presented to the papermaker in an easily understandable way.
To achieve detection of relevant defects a number of digital Procemex Flex cameras are installed to a multiple camera beam or beams, when detection is required at multiple locations or on both sides of the sheet.
Web inspection camera has detected a hole in the paper at the reel (upper left hand image). The hole is backtracked through the dryer and press sections to the cameras installed on top of the head box. The above right hand image and bottom zoomed image reveal the root cause of the defect which existed straight after the head box of the paper machine.
This specially constructed carbon fibre beam absorbs machine vibration, and is sturdy enough for the widest machines in the world. Sheet widths well in excess of 12 meters can easily be reached.
Some defects may be in different layers inside the web which requires different illumination for detection. Procemex Flex camera controls up to 3 separate strobe light sources simultaneously. The flashing of each light source takes place in individual sequences at the same point of the web, so the actual point is being inspected 3 times, each under different light conditions. The results of these three images are combined for reliable conclusions on the defect type and location (bottom, middle, top layer). This type of triple defect inspection requires 3 times higher data processing capacity over a single light source use.