Monitor air gap individually for all rotor poles to get early detection of damage / wear.
Supplements shaft and bearing monitoring as mechanical imbalance can result in shaft runout and vibrations.
Reduce downtime caused by damage and corrective maintenance. Improve ability to do preventive maintenance.
Inputs
Quality
How
Rotor air gap
Phase
Resolution up to 2000Hz20-200Hz
Pressure sensor 4-20mA
Results
Plot 1: Mean air gap for all rotor poles
Plot 2: Two poles (pole number) with largest deviation in air gap (in each direction) from mean.
Plot 3-x: Air gap for each rotor pole
The phase sensor keeps track of which rotor pole is in front of the air gap sensor(s) at any given time.
The air gap sensors are glued to the stator.
Measured air gap can be based on a time interval or a number of revolutions.
