| 摘要 |
FIELD: measurement technology, level measurement of liquid in open ponds, canals, canalization collectors and other water-development works. SUBSTANCE: level indicator for poorly conducting liquids has vertical magnetic circuit, sealed-tight excitation winding, bare spiral electrode, measurement circuit. Spiral electrode is located above sealed-tight excitation winding and contacts liquid. Magnetic circuit comes in the form of shielding lattice cylinder made of individual ferromagnetic wires which close around central part. Central part includes spiral electrode, sealed-tight excitation winding and connecting conductor. Measurement circuit is connected to lower end of spiral electrode through insulated conductor laid along axis of indicator. All elements of lower face of lattice cylinder-magnetic circuit are insulated from liquid. EFFECT: increased noise immunity of level indicator. 1 cl, 3 dwg
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