The ArcelorMittal's hot dip galvanizing line at Florangedeveloped and commissioned its own coating weight controlsystem. This system actuates the pressure as well as theposition of the knives. The fast and accurate response toupsets is partly attributed to the continuous auto-adaptationof the knife-to-strip distance. Large and rapid benefits, i.e.quality improvement and zinc savings, have been takenimmediately after it was put into production.