Velocity measurement is indispensable for process control and optimization in many industrial processes. It is the basis for many other applications such as cutting length control, length measurement and velocity difference measurement. In these processes velocity is measured using the laser Doppler technique.
Laser surface velocimeters (LSVs) from Polytec are ideally suited because they can conduct measurements on almost any surface and they are not susceptible to contaminated surfaces. The non-contact measuring technique makes it possible to eliminate any negative influences on accuracy, such as slippage and wear, in one go. The product being subjected to the measurement also remains intact. Another benefit of Polytec systems is the flexible interface concept – it enables velocity readings via encoder output, serial interfaces, LAN, Profibus and Profinet.
Polytec LSVs are used for a variety of velocity measurement processes in the cable and wire industry:
- dwell time determination in coating systems, e.g. for fiber optic cables
- cutting device control in cut-to-length processes
- coil synchronization when winding cables and wires