Patent ID: 10677636

Abstract:
A method for calibrating flow meters for fluid media comprises the steps of guiding a medium (102) through a reference measuring section (101-1) and a test measuring section (101-2) which has a flow meter to be calibrated, establishing at least approximately identical and constant pressure and flow conditions for the medium (102) in both measuring sections (101-1, 101-2), detecting a reference throughflow of the medium (102) through the reference measuring section (101-1) and throughflow values which correspond temporally thereto and are measured by the flow meter (125) to be calibrated of the test measuring section at a preset medium temperature, comparing the detected reference throughflow through the reference measuring section (101-1) with the throughflow values which correspond temporally thereto of the flow meter (125) to be calibrated, in order, based on this, to determine at least one correction value for the calibration of the flow meter (125) at the preset medium temperature, and determining of the respective correction value for the flow meter (125) for different medium temperatures of the medium (102), in order to determine a calibrating function using the temperature-dependent correction values as grid points.