FieldengMechanical & Motion
RPM From Count
Average rotational speed from a revolution count and elapsed time.
Mechanical & Motion
Average rotational speed from a revolution count and elapsed time.
App id: MECH-04. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
f = revolutions / timeInputs
| Name | Unit |
|---|---|
| Revolutions | 1 |
| Elapsed time | s |
Outputs
| Name | Unit |
|---|---|
| Rotational speed (hero result) | rpm |
| Revolutions per second | rps |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
frequency hz < 10 | Very low rotational speed | caution |
frequency hz > 20000 | Very high rotational speed | caution |
Assumptions
- Useful for a manual or optical revolution count. Not instantaneous speed.
Provenance
- Average speed over the observation interval.