Device for controlled metering and mixing of several active liquids

1) Automatic or semi-automatic device for controlled metering and mixing of several concentrated nutritional or fertilizing substances intended for plants, with this device comprising, on the one hand, means for selective sampling of these substances in corresponding tanks, and, on the other hand, means for fluid transfer composed of at least one fluid circulation line and at least one active element for movement of liquid, and, finally, means for metering, mixing and diluting amounts of sampled and transferred liquid(s), with said device comprising a control and management unit, preferably associated with a communicating and programming interface, controlling the sampling and transfer means and associated with measuring means and means for monitoring the circulation of fluids in the device, of the valve type,

• device (1) characterized in that the measuring means comprise, on the one hand, a measuring means (7), preferably unique and advantageously with sequential use, with a basic volume of sampled concentrated liquid and having to be mixed and/or diluted, and, on the other hand, at least one means (8) for measuring and/or for determining the final amount, preferably the volume, of the metered solution that is obtained by dilution, after metering, of the concentrated liquid or the mixture of concentrated liquids.