Method and apparatus for adjusting the density of a liquid

An apparatus for adjusting the density of a liquid, the apparatus including a liquid mass flow meter, a fluid mass flow meter, a programmable logic controller and an operator interface;

• the apparatus further comprising:
• a) a means to determine a characteristic of a first liquid connecting the liquid mass flowmeter to the programmable logic controller;
• b) a means for reading the characteristic of the first liquid connecting the programmable logic controller and the operator interface;
• c) a means for feeding data from the liquid mass flowmeter and the fluid mass flowmeter to the programmable logic controller;
• d) a means for combining the first liquid from the liquid mass flowmeter with a fluid from the fluid mass flowmeter to form a combined liquid;
• e) a means for adjusting the characteristic of the combined liquid;
• f) the characteristic being density;
• g) the liquid mass flowmeter providing a control signal output;
• h) the control signal output indicating an instantaneous density of the combined liquid, a mass rate of the combined liquid, and a volumetric flow rate of the flowing liquid;
• i) the programmable logic controller being set to provide the combine liquid with a predetermined density;
• j) the means for adjusting the characteristic of the combined liquid including means to adjust an amount of the fluid to have the combined liquid reach the predetermined density;
• k) the characteristic further being density with a temperature compensation factor;
• and
• l) the control signal output being a linearized current signal.