Experiences with Online Measurement of Tissue Weight Using Infrared Technology, 2012 PaperCon Conference

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Recently, a new infrared (IR) sensor measuring both water and cellulose has been applied to measure and control weight and moisture on a number of tissue machines. The IR measurement solves many of the problems with the conventional nuclear measurement including lower noise, temperature problems and reduced dust effects. However there are tradeoffs. The IR sensor measures cellulose and water but does not measure ash components and has a reduced sensitivity to lignin. This can be a problem for mills running a changing recycled furnish.