RPM Sensor
Measures rotational speed of shafts, motors, and rotating industrial equipment.
What Does an RPM Sensor Measure?
An RPM sensor measures the rotational speed of a shaft or rotating component. RPM (Revolutions Per Minute) directly represents how fast industrial equipment such as motors, pumps, fans, compressors, and conveyors are operating.
Signal Output
- Pulse output (NPN / PNP)
- Digital (Encoder / Hall Effect)
- Analog (4–20 mA proportional to speed)
- Communication protocols (RS485 / Modbus)
What Does the Signal Mean?
| RPM Behaviour | Industrial Meaning |
|---|---|
| Stable rated RPM | Normal healthy operation |
| Gradual RPM drop | Overload, bearing friction, or power issues |
| Sudden RPM fluctuation | Mechanical coupling or control instability |
| RPM mismatch | Belt slip, gearbox wear, or shaft misalignment |
Sensor Cluster
This sensor belongs to the Mechanical Health Cluster.
Industrial Applications
- Motor speed monitoring
- Pump performance validation
- Conveyor belt speed monitoring
- Fan and blower control
- Gearbox speed ratio verification
Industries Using RPM Sensors
Operating Conditions
- High vibration environments
- Dust and oil mist exposure
- High-speed rotating shafts
- Electromagnetic noise from motors and VFDs