FIELD: packaging industry.
SUBSTANCE: invention relates to a method for operating a metering apparatus for providing a liquid additive. Method of operating metering apparatus (1) for a liquid additive, having at least one pump (2) for pumping additive from tank (3) into pressure accumulator (4), metering valve (5) designed to provide additive present in pressure accumulator (4) in a metered manner, and check valve (6) by means of which additive present in pressure accumulator (4) can be led back into tank (3). Method includes at least following steps: determining need for metering; activation of pump (2) to create pressure in pressure accumulator (4); setting pressure in pressure accumulator (4) at metering pressure (8); outputting additive through metering valve (5); pressure reduction in pressure accumulator (4).
EFFECT: technical result is increased metering accuracy of metering device and efficient prevention of overdose.
8 cl, 5 dwg
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