FIELD: measurement technology; devices for monitoring liquid medium level. SUBSTANCE: level meter has transceiving acoustic transducer, receiving-exciting device, clock pulse generator, flip-flop for forming a time interval proportional to a level to be measured, time selector, count pulse generator and counter for converting a time interval into number. The level meter is characterized in that periodic self-checking is provided due to the use of damping oscillations of the acoustic transducer caused by its additional excitation as a reception pulse. EFFECT: enhanced reliability. 2 dwg
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