FIELD: measurement technology. SUBSTANCE: ultrasonic level indicator incorporates generator of acoustic pulses connected to first end of conductive waveguide, float carrying first communication coil and permanent magnet located on outer side of given coil, second communication coil wound on first closed magnetic circuit and connected with leads to leads of first communication coil, third communication coil wound on second closed magnetic circuit and connected with leads to processing unit that switches on preamplifier. Ends of waveguide are electrically interconnected through conductive element with formation of short-circuited turn. EFFECT: improved functional reliability and stability. 3 cl, 5 dwg
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