Measurement Solutions for Pulp and Paper Applications

Berthold is expert in monitoring critical processes. As technology leader of radiometric measurements we bring benefit to the pulp and paper industry by providing highly accurate and reliable online measurements – the base for a cost-efficient and high-quality production.

Applications are wide ranging from the radiometric level measurement on a pulp digester, over the concentration measurement of green or black liquor, up to the mass flow measurement of recycling paper on conveyor belts. Using microwave transmission technology we provide real-time measurements of the moisture content of wood chips.

These advantages are used to make critical applications more reliable:

  • Non-contacting: outside mounting of components
  • Reliable under extreme conditions
  • Wear and maintenance-free
  • Easy installation on existing pipes and vessels via clamp-on solutions
  • Smooth handling and operation
  • No re-calibration required
  • Outstanding long-term stability
  • Virtually no operational expenses

The processes in which Berthold instruments are used include:

  • Level and high-level switch in the pulp digester
  • Pulp stock level in the MC pump standpipe
  • Mass flow of recycled paper
  • Blockage detection in the pulper
  • Mass flow of wood chips or bark
  • Density of green or liquor
  • Density of lime mud
  • Moisture of wood chips


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Berthold's knowledge and experience in physics and in the techniques of highly sensitive detection of light, nuclear radiation and microwave frequencies, together with the use of modern electronics and software, allows us to maintain our excellent and longstanding reputation as a competent partner in solving diverse and difficult measurement problems, ...

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