The paper quality is often already determined in the headbox of a paper machine. The appropriate ratio between wire speed and jet beam velocity must be maintained, but the pulp jet velocity should be as homogeneous as possible within the headbox. Therefore, there should be no or only very small speed differences. It is not easy to ensure this and it is not possible to check speed differences with tactile measuring equipment. µSPEED laser encoder systems work contactless and are even suitable for this measuring application, so for measuring differences between paper wire and stock steel or within the headbox. Therefore µSPEED systems are an important tool for trouble shooting in paper production!
