FIELD: measurement of level of liquid media in closed vessels. SUBSTANCE: level indicator has tubular rod, float, permanent magnet and electric circuit including hermetically sealed reed relay. Rollers intercoupled by flexible tie are mounted on ends of rod. Lower roller is connected to float with displaced center of mass relative to rotation axis and upper roller is coupled to indicator with permanent magnet attached to it. Hermetically sealed reed relay is anchored on top of rod for interaction with permanent magnet. EFFECT: simplified design, increased operational reliability. 2 cl, 1 dwg
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