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LASER DISTANCE SENSORS FOR THE STEEL PRODUCTION INDUSTRY
A large steel producer makes products in various shapes and sizes. Round bar stock is created by cutting a continuously-cast bar to specific lengths. Bar is fed down a roller conveyor and a laser distance sensor (AR1000) measures the position of the end relative to the distance to a saw blade. The length is displayed on a screen in a remote operator’s booth as the distance data is transmitted via 4-20mA current loop signal.
The AR1000 measures to the leading edge of the steel bar. The temperature of the bar may be as high as 1100°F and the accuracy is 2 mm.