The SIROLL^CIS Flatness Gauge utilises the stereoscopic camera principal to overcome the inherent problems of hot strip and plate width and shape measurements, such as passline and thickness variations or tilt, lift and bounce of the strip at the exit of the last finishing stand.

Flatness or manifest measurement is specifically aimed at accurately mapping the changing shape of the strip as it passes through the camera’s field of view and displaying the results in a variety of ways including units of strain (I-units).

By projecting a number of laser stripes onto the top surface of the metal strip, the system is able to continuously determine the complex surface wave patterns both across and downweb. Using fast fourier transforms, the complex wave patterns are broken down into their respective frequencies and amplitudes, filtered and analysed to determine the units of downweb strain in a number of specific regions.

Crossweb profile scans up to the extremities of the steel strip edges enable full strip width evaluation without the need to move cameras and or laser beams. In addition, due to the crossweb profile measurement, true width values can now be measured irrespective of any curvature of the surface “canoeing”. Successive scans are used to build up an image of the surface and visually display the flatness shape on the HMI screen.

Benefits:

• High accuracy, linearity and reliability


• Low maintenance, availability > 99.85%


• Thermoprofile (radiant systems only)


• No moving or wearable parts


• Comprehensive interfacing


• Can be customised

Features:

• Gauge is factory calibrated for life


• Advanced edge detection techniques


• Fully compatible with existing equipment

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