FIELD: measurement.
SUBSTANCE: group of inventions relates to means of determining the level of liquid (16) remaining in the lower part of the container, filled with solid substance (14), after its unloading through outlet hole (18) of the container. Fraction of voids in solid-phase substance (14) is calculated. Level of liquid (16) after unloading is determined using calculated fraction of voids in solid-phase substance (14) and residual amount of liquid (16) after unloading.
EFFECT: high accuracy of determining liquid level.
13 cl, 4 dwg
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