Pumpe sowie Verfahren zum Betrieb einer Pumpe für Flüssigkeiten

Methods for operating a pump are provided, the pump comprising a rotor for conveying fluids, wherein the volume flow rate through the pump and the pressure difference across the pump is determined, wherein at least one first operating parameter and in particular a second operating parameter of a first group of operating parameters are detected and, depending on the value of the first and in particular also the value of a second operating parameter of the first group, the volume flow rate through the pump and the pressure difference across the pump is determined from detected values of the operating parameters, either from the first group of operating parameters, or values of another set of operating parameters, in particular at least one additional operating parameter, are taken into consideration in order to determine the volume flow rate and the pressure difference across the pump.