METHOD AND APPARATUS FOR MEASURING PROPERTIES OF A MOVING FIBER WEB

摘要

The invention relates to a method and an apparatus for measuring properties of a moving web. Web properties are measured with a measuring apparatus where a t least one sensor element is arranged to a rotating measuring roll. The measuring roll is in contact with the web to be measured, and the circumferential speed of the measuring roll is arranged to substantially equ al the web speed, the web being substantially in non-slipping contact with the measuring roll for an arc of the rotation of the measuring roll.