Controlling method and a measuring mixer for liquids and powders

A method of measuring a flowable material, comprising the steps of:

• regulating a flow rate of a quantity of a flowable material into a receiving container according to at least three non-zero flow rates;
• measuring a quantity of material received in said receiving container;
• comparing said measured quantity with a target quantity to produce a deviation value;
• computing a time variation of said deviation value;
• and
• setting said regulated flow rate in response to said comparing and computing steps.

A flowing material measuring mixer, comprising:

• at least two supply systems each comprising a supply container containing a respective flowable material and a flow velocity regulator connected to an outlet of said supply container for varying a flow of said flowable material therethrough in at least three non-zero increments;
• a receiving container at least connectable to outlets of each of said flow velocity, regulators for receiving said flowable materials from each of said supply systems;
• a measuring device associated with said receiving container for measuring a quantity of any of said flowable materials received into said receiving container;
• a measurement control unit receiving a target quantity and an output of said measuring device and deriving a deviation therebetween and including means for computing a desired flow quantity in accordance with said deviation;
• and
• means for selectively applying said desired flow quantity to a selected one of said flow velocity controllers.