Measuring the density in the pulper

Automatic process flow may be abrupt or ceased if a blockage forms within the pulping process. To ensure a trouble-free operation, the applied measuring system must establish an optimal ratio of wastepaper/pulp to process water. The efficiency of the running process is crucial for the operator. The noncontact measurement is installed outside of the vessel and is therefore not affected by process conditions. Thus, as much raw material as possible can be loaded.

Customer benefits

  • Prevents blocking, ensuring a smooth process
  • Enables continuous establishment of wastepaper/pulp to process water ratio
  • Continuous build-up signal (density)


  • Noncontact and nonintrusive
  • Mounted outside of the vessel
  • Stable detector with no need to recalibrate with age or temperature
  • Compact density device – transmitter and detector in one unit
  • Smart and cost-efficient



Density measurement Product brochure

Englisch | PDF | 1.5 MB

Solutions for pulp and paper production Industry brochure

English | PDF | 2.1 MB

Berthold's Measurement Solutions

SmartSeries LB 414

Compact and cost-optimized detector with integrated transmitter and local user interface