Patent ID: 8858170

Claim:
A centrifugal pump assembly with at least one impeller, a suction union ( 4 ) on an entry side of the at least one impeller, a pressure union ( 12 ) on an exit side of the at least one impeller, and a vortex flow sensor and at least one guidance element ( 22 , 24 ) in a conduit section formed by the suction union ( 4 ) or the pressure union ( 12 ), wherein said at least one guidance element is a rib ( 22 ) projecting radially inwardly from an inner wall ( 26 ) of the conduit section and at least one profile plate ( 24 ) which projects inwardly from the inner wall ( 26 ) of the conduit section and extends transversely to the rib ( 22 ), and which is orientated transversely to a flow direction (S) of a fluid to be delivered by the pump, and wherein said at least one guidance element influences a flow in the conduit section such that disturbing turbulences which compromise measurements of the vortex flow sensor are kept away from the sensor.