1. A drinks preparation machine, comprising a brewing module for forming a brewing chamber which is designed for receiving a portion package with a drinks substance, a pump for delivering a preparation fluid through a fluid conduit into the brewing chamber, a flow-meter which is arranged on the fluid conduit, as well as machine electronics for controlling the pump and for acquiring measurement data of the flow-meter, wherein the machine electronics are configured to evaluate the measurement data of the flow-meter and from this evaluation to make a differentiation between a first state which corresponds to a state with the portion package inserted into the brewing chamber, and a second state which corresponds to a state without the portion package inserted into the brewing chamber, in order to detect a presence or an absence of the portion package in the brewing chamber.
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