Liner Wear on SAG and Rotating Mills (EMAT)

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FARSENSE SAG is designed to be attached to the rotating drum of a Semi-Autogenous Grinding (SAG) mill and measure the wear of the liner in real-time using EMAT sensors and instrumentation and a patented technique. The EMAT sensors are attached to the bolts holding the SAG mill liner and send measurements to a base station at regular intervals or on-demand, to inform the operators of the conditions of the liner without having to stop the mill.


  • Continuous measurement of up to 8 points on the SAG liner with one instrument.
  • Accuracy within 1mm.
  • Rugged instrumentation and sensors to withstand operation in a mill environment.
  • Capable of up to 6 months of continuous operation with one battery charge.
  • Only available from Innerspec Technologies, and sold worldwide.