| 摘要 |
An arrangement for dosing fluids, in particular liquid fluids such as beverages, has a flowmeter arranged in the fluid dosing duct, in particular an impeller flowmeter, an on-off, preferably electric valve arranged in the dosing duct, for example downstream of the flowmeter, for releasing or cutting the flow of fluid, and an evaluation circuit that transmits a switching off signal (closing signal) to the on-off valve when a predetermined amount of fluid has pased through the flowmeter. In order to improve the dosing accuracy, a sensor is associated to the flowmeter for sensing the speed of flow given for example by the frequency of rotation of the impeller and for supplying to the evaluation curcuit a preferably electric sensor signal that corresponds to the speed of flow. The evaluation circuit supplies a preferably electric switching off signal to the on-off valve when the sensor signal falls below a predetermined lower value or exceeds a predetermined upper value. Also disclosed is a beverage dispensing system provided with such a dosing.
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