In cooperation between HZDR and TU Dresden, a novel measurement principle on the basis of transducer arrays was developed fitted to the particular requirements of measurements in liquid metal flows. The application of specific excitation methods as a simultaneous acquisition on several measuring lines and an interlaced pulsing strategy allows the acquisition of a flow field by a large number of measuring lines at the same time the conventional technique of commercial devices requires for measuring a single profile. Figure 2 shows the implementation of a corresponding measurement system comprising two transducer arrays each with 24 measuring lines in an orthogonal arrangement providing a direct measurement of both velocity components in a measuring plane of extent 67 x 67 mm² (with 24 x 24 vectors). Thereby, frame rates up to 100 Hz may be obtained.