Method for producing individual dosing quantities via a drum dosing device

A method for producing individual dosing quantities of a powdered product via a drum dosing device, the drum dosing device having a product feeder, a dosing drum, and a capacitive measuring device for determining a mass of the dosing quantities, the dosing drum defining a circumference and a dosing opening on the circumference, the dosing opening being delimited on an inner side via a filter element and being configured to be subjected to a negative pressure through the filter element, the method comprising:

• rotating the dosing drum until the dosing opening is in a filling position;
• in the filling position, effecting a filling process in which the dosing opening is filled from the product feeder with a sub-quantity of the powdered product, the dosing opening being subjected to negative pressure through the filter element, and a dosing quantity of the powdered product forming in the dosing opening;
• rotating the dosing drum until the dosing opening filled with the dosing quantity is in an ejection position;
• in the ejection position, effecting an ejection process, the dosing opening being subjected to a positive ejection pressure through the filter element and the dosing quantity being thereby ejected from the dosing opening, and an associated ejection reference time-point being determined;
• determining an individual mass of an ejected dosing quantity and an associated measurement reference time-point via the capacitive measuring device;
• ascertaining an actual time period from the difference between the measurement reference time-point and the ejection reference time-point and comparing the actual time period with at least one specified time period;
• and,
• in dependence on the comparison of the actual time period with the at least one specified time period, performing an adaptation of the positive ejection pressure for a subsequent ejection process in that a level of the positive ejection pressure is increased if the actual time period is too great.