LOAD MEASURING DEVICE, MANUFACTURING METHOD FOR THE DEVICE AND CONTROL METHOD USING THE DEVICE

摘要

A load measuring device for measuring a load acting on an elastically deformable member is described. The device comprises a distance sensor for measuring a length change in response to a deformation of the deformable member under the load to be measured. The distance sensor comprises a sensing element and a reference element, wherein at least a portion of said elastically deformable member is interposed between the sensing element and the reference element. For paper manufacturing or finishing, two members between which the load is measured are cooperating rolls, at least one of which is provided with an elastic cover. One of the rolls comprises the sensing element and the other roll comprises the reference element. Alternatively, the two members are a roll and a cooperating belt, at least one of which is provided with an elastic cover, wherein one of the roll and belt comprises the sensing element and the other one of the roll and belt comprises the reference element. Also, the sensing element and the reference element may be formed in one and the same member.