VTLG systems are the only laser gauges to measure the strip thickness during rolling in the mill, thus opening up completely new possibilities in production and quality assurance for our customers.
WAs with our contact gauges, they measure the thickness irrespective of the alloy – ideal preconditions for use in the rolling mill, but also on the annealing line, in the finishing section, on the strip edge miller or in the steel service centre.
Simple and safe
An automatic air cleaning system for the measuring window and beam path and the innovative temperature compensation ensure the highest precision even under difficult environmental conditions. As the lasers conform to laser protection class 3B, no additional beam protection guards are necessary.
The principle - The technology in detail
On the upper and lower sides of a C-frame is a compact measuring head which both transmits the measurement beam and receives the reflected light. Both sensors measure the distance from the strip surface from their perspective. The system then calculates the thickness of the strip from the measured distances and the distance between the two sensors.