Volumetric Dispensing Pressure Drops and Dynamic Viscosity Profiles in Automation Lines
Automated volumetric dispensing accuracy depends on balancing line pressure drops against non-Newtonian shear thinning profiles across operating flow rates.
Volumetric Displacement
Meaning
Method of measuring or moving a precise quantity of fluid by capturing a fixed volume within a chamber. Volumetric displacement ensures that the exact amount of resin or slurry is delivered regardless of the pressure or temperature. It relies on the movement of a piston or a rotating screw to push the material.
Metering Accuracy
Mechanical constraints of the pump define the amount of fluid released in each cycle. Because volumetric displacement is independent of the viscosity of the material, it represents the preferred method for dosing two-component adhesives. This precision prevents the common errors associated with time-pressure dispensing systems.
Pumping Mechanism
Rotary gears or progressive cavity screws move the fluid in discrete pockets from the inlet to the outlet. In a volumetric displacement system, the speed of the motor translates directly into a flow rate. This linear relationship simplifies the integration of the pump into a robotic assembly line.
Battery Application
Applying the correct mass of electrolyte or thermal paste is required for the longevity of the cell. Using volumetric displacement allows manufacturers to hit tight tolerances on the final weight of the pack. It minimizes the waste of expensive chemicals while ensuring that every internal surface is properly wetted.
Precision in this step prevents the formation of dry spots in the electrode stack.