Clinker level in the cooling system

Level measurement at cement clinker cooler

The clinker is cooled as it is discharged from the rotary kiln onto a moving grate through which air is forced. The cooling is regulated by the feed rate and the amount of airflow. The quality of the clinker is directly affected by the cooling rate. Cooling too slowly results in a larger crystalline structure, which requires more energy to complete the grinding process and can decrease product quality. Increasing airflow to the cooler ensures rapid cooling but also results in high energy costs and inefficiencies in other parts of the process. With an accurate measurement of clinker level, the amount of clinker present on the cooler grates can be regulated. This leads to an optimized process and therefore generates cost savings.


  • External component mounting
  • Not exposed to harsh process conditions
  • Free of wear and maintenance
  • Lowest possible source activity with use of highly sensitive and stable detectors
  • SuperSENS option, with industry leading sensitivity, can extend lifetime of an aged source
  • No re-calibration due to unmatched stability and aging compensation


Customer benefits

  • Accurate and reliable measurement of clinker level
  • Energy savings through process optimisation
  • Low maintanance costs



Clinker level detector

Whether it is the proven two-wire system using remote transmitters or the integrated field devices with HART or Bus protocol. With an accurate measurement of clinker level, the cooling airflow can be regulated to optimize the cooling process, ensure product quality, and reduce operation costs.


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