FIELD: food-processing, chemical, petroleum and other industries. SUBSTANCE: device includes filter with control valve fitted on its inlet pipe pile; control valve is connected with actuating mechanism; device is also provided with reversible stepping motor, conductivity sensors fitted on inlet and outlet pipe lines, differential amplifier, threshold element, NOT and AND gates, pulse shaper, analog-to-digital converter, reversible pulse counter, computer unit, power amplifier unit, light-emitting diode and limit switches. EFFECT: enhanced efficiency. 2 cl, 1 dwg
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