The Stereoscopic Width Gauge DigiScan XD4100, designed for installation above the roll tables in hot strip and plate mills, is state-of-the-art technology for measuring the width and centerline of strips or plates. The stereoscopic arrangement permits high on-line accuracy despite material hop, tilt, lateral movement, and thickness variation.
For use at the roughing mill or finishing mill exit, the self-emitted optical radiation of the hot strip provides sufficient contrast for width determination. An optional front light or back light mode is available for installation where the rolling temperatures are below 600°C.
The gauge has an integrated Web server and the connection to the gauge with any Web browser, from a PC or a tablet, gives an access to gauge measurement data and configuration parameters.
Remote access is possible for diagnostic assistance.
The DigiScan XD4100 with built in Ethernet connection, integrated digital inputs / outputs and analogue outputs, has a very flexible communication architecture and can easily be connected into any automation system.
- Integrated Modbus TCP protocol,
- Integrated OPC UA protocol,
- Optional Profinet and Profibus-DP protocol.
Temperature profile option
The display of temperature distribution across the strip helps for a better control of the rolling process by isolating the source of camber, hook, or skid marks from reheating furnace…
The temperature across the width of the product is obtained by calibrating the grey level output of the cameras to a temperature scale. The DigiScan XD4100 can provide:
For gauge positioned after rougher, this option displays head and tail shape of the bar for crop optimization. It calculates the cutlines positions according to several configurable criterions (Fishtail line, Percent line, Dog bone and Camber) and supply to the CropShear PLC the distance between those lines and the detection point (ex: HMD like IRIS or DC4500). It’s necessary to have a good speed measurement (with Velas DL4000 for example) for an accurate shape and for bar tracking. Scatter plots are transmitted through Ethernet.