Systems and Methods for Measuring Polymer Additive Dispensation

A method of dispensing an additive, comprising:

• dispensing an additive from a secondary feeder to a primary feeder;
• dispensing the additive from the primary feeder to a mixing device;
• obtaining a primary measurement from the primary feeder feeding the mixing device, wherein the primary measurement is a total weight of additive fed from the primary feeder over a time interval;
• obtaining a secondary measurement from the secondary feeder that feeds the primary feeder, wherein the secondary measurement is a total weight of additive fed from the secondary feeder over the time interval;
• comparing the primary measurement and the secondary measurement;
• and
• (i) when the difference between the primary measurement and the secondary measurement is less than a selected threshold, continuing either or both of
• (i-a) dispensing the additive from the primary feeder to the mixing device or
• (i-b) dispensing the additive from the secondary feeder to the primary feeder;
• or
• (ii) when the difference between the primary measurement and the secondary measurement is greater than the selected threshold, halting either or both of
• (ii-a) dispensing the additive from the primary feeder to the mixing device or
• (ii-b) dispensing the additive from the secondary feeder to the primary feeder, and further recalibrating at least one of the primary feeder or the secondary feeder.