Particle sizing during grinding prozess

Online particle size controller OPC

Online particle size controller OPC

Particle sizing during grinding prozess

180 mm
180 mm
110 mm
400 kg

Technical details
  • Online particle size analysis in full product flow
  • Integrated sampling with recirculation of the analyzed product
  • Continuous analysis possible
  • Evaluation and detection of screen breaks
  • Optimization of maintenance intervals due to grain size changes during operation
  • Can be operated with different recipes without the need for recalibration.
  • Own evaluation electronics with own small monitor in the local control box.


Machine types
Machine OPC
Length 180 mm
Width 180 mm
Height 110 mm
Weight 400 kg

Download data sheet

Tietjen's solution for hammer mills

Particle size measurement

The Online Particle Size Controller OPC is a measuring device for the continuous determination of the particle size of free-flowing bulk materials of all kinds.

The OPC is integrated directly into the grinding process of the hammer mill. Regrind is fed into the OPC via a bypass and the particle size is determined there using a camera. The measurement data is then evaluated in the OPC software, which is available in several languages. If the particle size deviates from the previously defined specification or if there is a screen break, the OPC software informs the operator.

Grinding module
Grinding module with particle size controller

This automated and integrated measuring process increases throughput because the grinding process does not have to be interrupted during the analysis. Due to the continuous analysis, the quality of the ground material is also improved.


Each system is different
Diverse applications in dry grinding require individual solutions
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