XLine2™ sensors offer enhanced accuracy through the use of laser line projection. A laser line projector projects 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-dimensional 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.

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.