Wood & Paper Manufacturing worked example

Paper Basis Weight Check with available time window for the basis weight check of 25 hr: a worked example

What does the result look like when available time window for the basis weight check reaches 25 hr? The full calculation is worked below with real intermediate numbers. Use it when paper basis weight check in wood and paper manufacturing needs a fast in-spec check before the next wood and paper manufacturing step starts.

The inputs for this scenario

  • Available time window for the basis weight check: 25 hr (raised for this scenario; the documented default is 10)
  • Required basis weight sampling and lab time: 8 hr (unchanged)
  • Reel change and scanner recalibration buffer: 12 hr (unchanged)

Working through the calculation

  • Applying the documented formula (Remaining paper basis weight check buffer = available paper basis weight check window - required paper basis weight check time - paper basis weight check buffer time) to the inputs above produces each figure below.
  • At this operating point the engine returns 0 outside for inside window, the number this scenario is built around.
  • At this operating point the engine returns -13 value for nearest margin.
  • At this operating point the engine returns 8 value for lower limit.
  • At this operating point the engine returns 12 value for upper limit.

How this compares with the baseline

  • Against the tool's baseline example, where available time window for the basis weight check sits at 10 hr and the headline result is 1 inside, this scenario comes in 100% below the baseline at 0 outside.
  • A figure at this level is achievable when available time window for the basis weight check is genuinely sustained, not just peaked for a shift. It assumes fixed sampling and lab durations and does not account for a re-test triggered by an out-of-spec first sample.

Results at a glance

  • Inside window: 0 outside (headline result)
  • Nearest margin: -13 value
  • Lower limit: 8 value
  • Upper limit: 12 value

Run it with your numbers

  • Every input above is editable in the live Paper Basis Weight Check calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.