Security, Fire & Life Safety Products worked example

Sensor Test Throughput at 99% expected test-station uptime: a worked example

What does the result look like when expected test-station uptime reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when sensor test throughput in security, fire and life safety products is being asked to take on more work and you need to know if there is room.

The inputs for this scenario

  • Sensors tested per functional-test cycle: 4 units / cycle (unchanged)
  • Available test cycles in the period: 480 cycles (unchanged)
  • Expected test-station uptime: 99 % (raised for this scenario; the documented default is 90)
  • Expected first-pass test yield: 97 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross sensor test throughput capacity = sensor test throughput output per cycle × available sensor test throughput cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,844 units for good sensor test throughput capacity, the number this scenario is built around.
  • At this operating point the engine returns 1,920 units for gross sensor test throughput capacity.
  • At this operating point the engine returns 19.2 units for sensor test throughput downtime loss.
  • At this operating point the engine returns 57.02 units for sensor test throughput yield loss.

How this compares with the baseline

  • Against the tool's baseline example, where expected test-station uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 10% above the baseline at 1,844 units.
  • A figure at this level is achievable when expected test-station uptime is genuinely sustained, not just peaked for a shift. It applies flat average uptime and yield, so it won't reveal burst downtime or a specific failure mode that a per-defect Pareto would surface.

Results at a glance

  • Good sensor test throughput capacity: 1,844 units (headline result)
  • Gross sensor test throughput capacity: 1,920 units
  • Sensor test throughput downtime loss: 19.2 units
  • Sensor test throughput yield loss: 57.02 units

Run it with your numbers

  • Every input above is editable in the live Sensor Test Throughput calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.