Calculate the predictive-maintenance sensor inventory required across an asset base. Enter the monitored asset count, average sensing points per asset, spare allowance, installation productivity, and rollout duration. The calculator rounds hardware and crew requirements upward, showing base sensors, spare units, and the minimum installation crews needed to complete the planned deployment window.
Fleet size is the hardware quantity to procure under the stated spare policy. Crew count reflects installation workload for the base sensors and assumes productivity already includes commissioning.
Different asset classes may need different sensor types. Calculate them separately when hardware is not interchangeable.
For 800 assets with 3 sensors each and a 5% spare allowance, total fleet size is 2,520 sensors. At 18 installations per crew-day over 60 days, at least 3 crews are needed.
Sensors are discrete devices, so fractional requirements are rounded up.
Yes. A weighted average can represent a mixed asset population.
No. Crew sizing uses planned base installations unless spare units are scheduled for deployment.
It should include mounting, configuration, testing, and commissioning completed by one crew in one day.
Only if they are interchangeable; otherwise calculate each model or asset class separately.
| Output | Meaning |
|---|---|
| Base sensors | Monitoring points required for assets |
| Spare sensors | Reserve added by the spare allowance |
| Total fleet | Base plus spare inventory |
| Minimum crews | Whole crews needed for the rollout window |