Paper machine wet line control

Details Paper machine wet line control Paper machine wet line control

H - Electricity

04

N

350/32

H04N 7/18 (2006.01) D21F 1/02 (2006.01) D21F 7/00 (2006.01) D21G 9/00 (2006.01) G01N 21/86 (2006.01)

Patent

CA 1193710

PAPER MACHINE WET LINE CONTROL ABSTRACT OF THE DISCLOSURE A paper machine wet line monitor is provided by photographing the surface of the wire of a paper machine in the area of the wet line (sometimes known as the dry line) with a video camera to generate video signals. The video signals are digitized and define a line corresponding to the wet line of the machine and this line is displayed preferably while also indicating the average location of the wet line across the machine. The processed digitized signal may be imposed on an automatic headbox control to influence this control and maintain the position of the wet line.

406095

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