Method for correcting and taring an output of a dosing belt weigher

A method for taring an output of a belt weigher for dosing bulk material to achieve a constant net output, comprising the following steps:

• (a) forming an arithmetic tare mean value of influences effective on said belt when said belt runs empty without any bulk material on said belt,
• (b) repetitively measuring or sensing a gross belt load to provide respective gross belt load signals based on a statistically relevant number of belt revolutions when bulk material is transported on a belt of said belt weigher,
• (c) forming from said gross belt load signals a first arithmetic mean or average value,
• (d) measuring or sensing belt load portions individually for a plurality of individual belt sections to form belt section load signals,
• (e) forming from said belt section load signals second arithmetic mean or average values allocated individually to each belt section,
• (f) comparing said first arithmetic mean value with said second arithmetic mean values to provide different values,
• (g) producing from said difference values correcting signals individually for each belt section,
• (h) using said correcting signals for correcting an output of said belt weigher individually for each respective belt section, and
• (i) deducting from said gross belt load signals said arithmetic tare mean value, whereby a constant net output of bulk material is obtained.