FIELD: technological process.
SUBSTANCE: in device with two fly gates that have controlling inlets with measuring vessel and piston that freely moves inside, according to invention, controlled frequency generator is introduced with direct and inverse outlets, at that direct and inverse controlling inlets of fly gates are accordingly connected to controlling outlets of frequency generator, which is connected to frequency setter. During operation measuring vessel is filled and emptied at the same time, and frequency of this process and measuring vessel capacity determine reagent flow rate.
EFFECT: higher accuracy and efficiency of metering.
4 cl, 7 dwg
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