FIELD: physics; acoustics.
SUBSTANCE: invention refers to acoustics and can be used for analysis of fluid physical and chemical properties, in particular for acoustic speed determination and analysis of other physical characteristics (viscosity, frequency dispersion of these parameters, etc.). Single-frequency generator contains amplifier input and output of which are closed by feedback circuit including acoustic wave delay line containing radiating and receiving resonant converters, one of which has narrow working band. Acoustic body wave delay line is analysed fluid between submerged planes of radiating and receiving resonant converters which narrow the volume characterised by natural frequency set. Quartz resonators are used as converters.
EFFECT: extended range of application, simplified production process and lower cost price.
5 cl, 2 dwg
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