CONTROL OF THE ABRASIVE THROUGHPUT OF A BLASTING INSTALLATION

The invention relates to a method for adjusting or operating a particle-metering system for a particle blasting installation, in particular a blasting installation for the working of surfaces, the abrasive throughput of which is preset by means of a passing-through opening that can be varied on the basis of time and/or variables and is determined by means of a downstream throughput sensor as a throughput sensor signal (DS), wherein the throughput sensor signal (DS) is used for controlling a manipulated variable (SG) for the degree of setting of the passing-through opening, wherein to adjust the metering system for at least one value of the manipulated variable (SG) the actual throughput (D) through the passing-through opening is determined by means of a measurement of the weight of abrasive material (M) allowed through within a defined time period (Dt), and the manipulated variable (SG), the actual throughput (D) and the corresponding throughput sensor signal (DS) are stored in an assignment table, wherein the relations between the actual throughput (D), the manipulated variable (SG) and the throughput sensor signal (DS) are used during subsequent operation.