To cover most of research applications we propose a set of five emitting frequency 0.5 - 1 - 2 - 4 - 8 MHz with the corresponding transducers. Low frequencies are used for long distance and / or large velocities measurement while high frequencies serve small measuring depth and / or reduced velocities.
We propose various models of transducers for each frequency, from high-temperature resistant to high-pressure resistant versions, plus special focused transducers for optimized beam shape and thus spatial resolution.
Custom-made transducers can be designed on demand, for instance optimized for mercury measurement or with integrated thread on the casing.
More details can be found on 'Transducers'.