Bulk Solids, Mining, Aggregates & Material Processing worked example

Feeder Calibration Workload at 14% allowance for sampling, resets and recalibration: a worked example

What does the result look like when allowance for sampling, resets and recalibration reaches 14%? The full calculation is worked below with real intermediate numbers. a plant team is reviewing feeder calibration workload for bulk solids, mining, aggregates, and material processing and needs a clear feeder calibration workload for production, quality, capacity, maintenance, purchasing, or costing decisions

The inputs for this scenario

  • Tonnage to pass during feeder calibration runs: 1,200 tons (unchanged)
  • Calibration throughput rate: 150 tons / hr (unchanged)
  • Allowance for sampling, resets and recalibration: 14 % (raised for this scenario; the documented default is 12)

Working through the calculation

  • Applying the documented formula (Base feeder calibration workload = feeder calibration workload workload รท feeder calibration workload completion rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 9.12 hr for feeder calibration workload, the number this scenario is built around.
  • At this operating point the engine returns 8 hr for base feeder calibration workload.
  • At this operating point the engine returns 14 % for feeder calibration workload allowance.
  • At this operating point the engine returns 150 pieces / min for feeder calibration workload completion rate.

How this compares with the baseline

  • Against the tool's baseline example, where allowance for sampling, resets and recalibration sits at 12% and the headline result is 8.96 hr, this scenario comes in 1.79% above the baseline at 9.12 hr.
  • A figure at this level is achievable when allowance for sampling, resets and recalibration is genuinely sustained, not just peaked for a shift. It assumes a steady calibration throughput; surging feed, repeated failed verifications, or a feeder that needs mechanical repair first will push actual time well past the estimate.

Results at a glance

  • Feeder Calibration Workload: 9.12 hr (headline result)
  • Base feeder calibration workload: 8 hr
  • Feeder Calibration Workload allowance: 14 %
  • Feeder Calibration Workload completion rate: 150 pieces / min

Run it with your numbers

  • Every input above is editable in the live Feeder Calibration Workload calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.