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Laser Line Technology together with 2D detector and advanced image processing make the sensors impervious to steam and smoke. XLine2™ sensors offer enhanced accuracy through the use of laser line projection. A laser line projector pojects a laser line onto the measurement surface, which is optically expanded in one dimension. This line image across the molten metal surface is viewed by the sensor as a two-dimensionl array broken down into pixels. Using triangulation, these pixels are used to obtain up to 100 simultaneous measurements over this line. Through algorithm analysis, a single value is derived. Because of the sensor´s multi-point analysis, this metal level measurement is more reliable and accurate than prior laser technology. The sensor´s features also eliminate problems with reflectivity, caused by shininess of aluminum surface and eliminate inaccuracies generated by smoke, steam and other environmental influences found in the casting process.
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