Grain Milling, Dry Bulk Food & Feed Handling worked example

Ingredient Dosing Variance at 99% dosing efficiency: a worked example

What does the result look like when dosing efficiency reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when checking how quickly a micro-ingredient system, loss-in-weight feeder, screw feeder, hand-add station, or bulk scale can dose and verify ingredients for batches.

The inputs for this scenario

  • Dosed ingredient weight: 1,800 lb (unchanged)
  • Dosing runtime: 3 hr (unchanged)
  • Dosing efficiency: 99 % (raised for this scenario; the documented default is 90)

Working through the calculation

  • Applying the documented formula (Raw ingredient dosing throughput = dosed ingredient weight รท dosing runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 594 lb / hr for effective throughput, the number this scenario is built around.
  • At this operating point the engine returns 600 lb / hr for raw ingredient dosing throughput.
  • At this operating point the engine returns 99 % for efficiency.
  • At this operating point the engine returns 3 hr for runtime.

How this compares with the baseline

  • Against the tool's baseline example, where dosing efficiency sits at 90% and the headline result is 540 lb / hr, this scenario comes in 10% above the baseline at 594 lb / hr.
  • A figure at this level is achievable when dosing efficiency is genuinely sustained, not just peaked for a shift. It assumes a single steady dosing rate over the runtime, so it will mask start-stop dribble feeding, ingredient bridging, or accuracy problems that average out to the same total.

Results at a glance

  • Effective throughput: 594 lb / hr (headline result)
  • Raw ingredient dosing throughput: 600 lb / hr
  • Efficiency: 99 %
  • Runtime: 3 hr

Run it with your numbers

  • Every input above is editable in the live Ingredient Dosing Variance calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.