For this pre-treatment method, the level of ore slurry needs to be monitored continuously to guarantee safe and optimized utilization of the autoclave. Due to the temperature (200–250 °C) and pressure (approx. 35 bar) conditions, the walls of those autoclaves are too thick (around 300 mm) to apply conventional measurement solutions. Radiometric level measurement is the only technology to provide long-term, reliable results under these extreme conditions.

Customer benefits

  • Reliable level control
  • Process optimization: Improvement in safety and utilization of the autoclave
  • Nonintrusive, no corrosion issues
  • Virtually no operating costs
  • No maintenance and no recalibration due to patented stabilization technology
  • Wear resistant and maintenance-free as the measurement is noncontact




  • Standard: fan beam point source / rod detector arrangement
  • Highly repeatable and stable over years of operation
  • Online, real time process information
  • High accuracy with very good reproducibility
  • Immune to interfering radiation, XIP or RID facilitates operation during weld inspections
  • SIL2 /SIL3 certified option
  • Noncontact, nonintrusive technology


SIL certified option

The SENSseries LB 480 detectors are certified for use in SIL2 applications. SIL3 is achieved with homogenous redundancy. The certificate covers all measurement applications, including high and low level alarms, continuous level measurements, and density measurements. Thus safe operation of critical processes is guaranteed.

More about SIL