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

Feeder Rate at 68% target feed-rate compliance: a worked example in weighing, dosing & loss-in-weight feeding

Here is what the math looks like when conditions slip. We hold every other input steady and drop target feed-rate compliance to 68%, then walk the calculation through step by step. Feeder Rate here measures how consistently a loss-in-weight (LIW) or volumetric feeder hits its commanded setpoint, expressed as the share of dose cycles that landed on target versus the total sampled.

The inputs for this scenario

  • Off-target dose events: 8 count (held at the documented default)
  • Total dose cycles sampled: 250 count (held at the documented default)
  • Target feed-rate compliance: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Feeder Rate rate = affected amount รท total amount.
  • Rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Gap to target works out to 64.8 points at these inputs.
  • Affected count works out to 8 count at these inputs.
  • Total count works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target feed-rate compliance sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to target feed-rate compliance, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats every off-target event equally, so a single 30% overshoot counts the same as a 0.5% deviation; pair it with actual mass-deviation data before condemning a feeder.

Results at a glance

  • Rate: 3.2 % (headline result)
  • Gap to target: 64.8 points
  • Affected count: 8 count
  • Total count: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Feeder Rate calculator, set target feed-rate compliance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.