FIELD: instruments. SUBSTANCE: device has electric screen 19, acoustic screens 20, 21, electric current conducting films 3, 4, which are acoustically connected to transmitting piezoelectric plate 5 and receiving piezoelectric plate 6. Plates 5 and 6 are located on surfaces of prism sound guides 1, 2. Transmitting piezoelectric plates 5 are joined in butt joint to each other so do receiving piezoelectric plates 6. Size of piezoelectric plates conforms to condition of equal power of ultrasound waves over area of corresponding plate. EFFECT: increased functional capabilities. 4 dwg
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