Patent ID: 6736010
Filing Date: 2004-05-18
Classification: G01N

Abstract:
Process for displaying, measuring the size of and counting individual inclusions in suspension in moving liquid metal using an ultrasound sensor comprising emission and reception means, comprising the steps of:emitting, using the emission means, a series of ultrasound beam pulses within said liquid metal, receiving, using the reception means, echoes reflected by said inclusions, successively acquiring and processing said reflected echoes, displaying said echoes as images, analyzing the images to count and measure the diameters of inclusions, and calibrating the sensor to measure inclusion size, comprising selectively placing in a path defined by the beam pulses at least one control reflector having predetermined dimensions and a geometry stable over time, successively acquiring and processing reflected echoes from the at least one control reflector, displaying the reflected echoes from the at least one control reflector as images, and analyzing the control reflector echo images to determine a relationship between amplitude of said control images and the control reflector dimensions.