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Phase reference - trigger

Phase reference rational speed icon

The phase reference or synchronization (trigger signal) sensor is an inductive (eddy current) proximity sensor used for triggering the phase reference once per revolution. It measures the distance between a target glued on the shaft and detects its presence once the target is in range. Once per revolution, the target crosses the sensor and a pulse is sent to the acquisition unit. Trigger signal is used as a phase reference for all the measurements that require correlation of data with the position of rotor.

Phase reference trigger sensor
  • Trigger is used for:

  • Air gap signals

  • Magnetic flux signals

  • Vibrations (relative and absolute)

  • RPM measurements (once per revolution)

  • Any other value that is correlated to rotor position

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