Weighing, Dosing & Loss-in-Weight Feeding worked example

Gravimetric Vs Volumetric Delta at 98% feeder transfer efficiency: a worked example

What does the result look like when feeder transfer efficiency reaches 98%? The full calculation is worked below with real intermediate numbers. Use it when gravimetric vs volumetric delta in weighing, dosing and loss-in-weight feeding needs a buy quantity for the next weighing, dosing and loss-in-weight feeding run and you do not want to short the line.

The inputs for this scenario

  • Finished units to be dosed: 500 units (unchanged)
  • Ingredient dose per finished unit: 0.08 units (unchanged)
  • Feeder transfer efficiency: 98 % (raised for this scenario; the documented default is 85)

Working through the calculation

  • Applying the documented formula (Required gravimetric vs volumetric delta = covered amount × use per unit ÷ transfer efficiency) to the inputs above produces each figure below.
  • At this operating point the engine returns 40.82 gal for required quantity, the number this scenario is built around.
  • At this operating point the engine returns 40 gal for theoretical amount.
  • At this operating point the engine returns 0.82 gal for loss allowance.
  • At this operating point the engine returns 98 % for efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where feeder transfer efficiency sits at 85% and the headline result is 47.06 gal, this scenario comes in 13.27% below the baseline at 40.82 gal.
  • A figure at this level is achievable when feeder transfer efficiency is genuinely sustained, not just peaked for a shift. It treats transfer efficiency as a single constant; in practice efficiency varies with material flowability, humidity, and feed rate.

Results at a glance

  • Required quantity: 40.82 gal (headline result)
  • Theoretical amount: 40 gal
  • Loss allowance: 0.82 gal
  • Efficiency: 98 %

Run it with your numbers

  • Every input above is editable in the live Gravimetric Vs Volumetric Delta calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.