FIELD: measurement technology. SUBSTANCE: invention is meant for continuous ultrasonic measurement of lengths and distances in liquid media. Gauge includes radiating element 1, waveguide 2, sealed tube 3, signal winding 5, float 6, two permanent magnets 7, 8, generator 9, two amplifiers 10, 11, two formers 12, 13 of time intervals, computing unit 14. Radiating element is put on butt of waveguide which is placed into sealed tube. Waveguide carries measurement and reference windings. First permanent magnet is positioned on float and second one embraces reference winding. EFFECT: enhanced operational reliability. 1 dwg
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