Method for calibrating a filling system and filling system

A method for calibrating a filling system having at least one first filling point and at least one second filling point, wherein the first filling point has at least one first factory-calibrated flow or level measuring device having a first control and evaluation unit, and the second filling point has at least one second factory-calibrated flow or level measuring device having a second control and evaluation unit, wherein the number of factory calibration points of the first flow or level measuring device is greater than the number of factory calibration points of the second flow or level measuring device and/or wherein the dwell time in at least one calibration point in the first flow or level measuring device is greater than the dwell time in at least one calibration point in the second flow or level measuring device, and wherein the control and evaluation unit of the at least first flow or level measuring device and the control and evaluation unit of the at least second flow or level measuring device are at least indirectly connected to one another via a communication channel, the method comprising:

• in a first calibration step, a calibration of a calibration variable of the first flow or level measuring device is performed at a first calibration point under process conditions;
• in a first deviation determination step, the first control and evaluation unit of the first flow or level measuring device determines an average deviation of the calibration variable measured by the first flow or level measuring device from a desired value of this calibration variable at the first calibration point;
• in a first correction step, the first control and evaluation unit corrects at least one calibration parameter taking into account the determined deviation;
• in a first transmission step, the first control and evaluation unit transmits the determined deviation at the first calibration point and/or the at least one corrected calibration parameter to the second control and evaluation unit via the communication channel;
• and
• in a first adjustment step, the second control and evaluation unit corrects at least one calibration parameter at a first calibration point, taking into account the deviation transmitted by the first control and evaluation unit or the transmitted calibration parameter.