There is no doubt that the best method of measuring length of product in a steel mill is by use of a LaserSpeed laser Doppler gauge. With thousands of installations world-wide in all types of processes. For accurate measurement the measured object must pass the laser at the reference distance +/- 100 mm and for some applications this is not possible. Typically this problem arises on slab casters where there is a large difference between the narrowest and widest slab or wide roller tables where bars are passing and are not in a fixed location but can wander left or right.
The solution – LaserSpeed auto-tracking system
LIMAB Ltd have developed a turn-key solution to solve this measurement application and is suitable for use on billet/bloom or slab casters or any roller table transporting hot or cold bars. The LaserSpeed is mounted on a servo driven positioning mechanism that automatically tracks the position of the bar placing the LaserSpeed at the optimum distance. The information about the bar position comes from an integrated laser distance sensor. The system is protected by a special housing which keeps the equipment clean and cool. Download brochure.
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LIMAB Ltd LaserSpeed auto-tracking system