A basic quality measurement system generally includes basis weight and moisture profile measurements and in addition average basis weight of the paper web and moisture control related to these variables.
[1] Other commonly used continuous measurements include: ash content, color, brightness, smoothness and gloss, coat weight, formation, porosity, fiber orientation, and surface properties (topography).
Wide machines and accurate profile calculations require beam stability and accuracy of mechanical movement.
As high accuracy in demanding and variable conditions is required, the sensitive sensors must be securely fastened.
The most important goal is maintaining the exact respective position of the upper and lower measurement platforms in relation to their distance from each other, in MD and in CD .
A basic quality measurement system generally includes basis weight and moisture profile measurements and in addition average basis weight of the paper web and moisture control related to these variables.
[3] Other commonly used continuous measurements include: ash content, color, brightness, smoothness and gloss, coat weight, formation, porosity, fiber orientation, and surface properties (topography).
The measurements are taken on the diagonal line and act as basis for profile (machine and cross-direction) and variation calculations.