Laser Surface Velocimeters (LSV) are high precision sensors, designed to directly measure the surface speed and length of a moving material without contact.

The laser based measurement principle eliminates the maintenance and process issues typically associated with contact measurement methods, such as slippage, wear and tear and changing wheel diameter due to temperature variations. In addition, the LSV eliminates the need for recurring process calibration as is often the case with contact measurement techniques.

In particular, the LSV is designed to offer high precision, reliable strand length and speed measurements for applications on continuous casters. Considerable improvements in cut length accuracy and long term repeatability, as compared to contact measurement methods, have been realized, thus improving yield at the caster and the rolling mill. This, coupled with a significant reduction in maintenance time and effort, provides an excellent return-on-investment.

Polytec LSV systems