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The ability to measure accurately and easily the moisture of a given product on-line, has tremendous benefits for productivity and quality control.  The difficulty has been that the product to be measured is constantly changing as it moves by a moisture sensor.  These changes have included layer thickness, density, particle size, volatile matter content, color, and temperature. 

The Berthold  Moisture Analyzer is able to make moisture measurements that have not been able to be made by other technologies.  Berthold has two moisture measurement products available, LB356 Microwave Moisture Analyzer and LB350 Neutron Moisture Analyzer.

LB356 Microwave Moisture Analyzer
Typical Applications -- Pipe, Chute, or Belt

Berthold's MICRO-MOIST has been developed for non-contacting accurate on-line determination of the water content of many different materials.  The product to be measured can be on a moving belt, in a chute, or in a pipe.

The MICRO-MOIST amplifier develops multiple microwave frequencies in wide frequency range.  It then sends the microwave signals to a transmitting horn which directs them through the material to be measured and then are collected in a receiving horn on the opposite side, where they are sent back to the amplifier for evaluation.

The microprocessor has the unique ability to measure attenuation and/or phase shift for each frequency generated.  This results in a very accurate moisture measurement that is negligibly affected by temperature, particle size or volatile matter.

Since the measurement is carried out as a transmission measurement, the entire material transmitted will be analyzed which will ensure a representative value even in those cases where the moisture is distributed non-homogeneously.

Grain in a mill

Wood chips in a chipboard manufacturing plant

Wood chips in a pulp and paper plant

Starch pellets in a food plant

Sand-lime stone mixture in a sand-lime stone production plant

Hard coal in a coking plant

Cream cheese from a separator in a cheese factory
LB 350 Neutron Moisture Meter

Advantages:

  • Continuous measurement of moisture content
  • Independent of the temperature, pressure, pH value and color of the material
  • Simple installation in or on existing tanks or vessels
  • Large measuring volume, ensuring a better, more representative measured value
  • High measuring sensitivity

Typical Applications:

  • Measurement of sand moisture in the concrete, calcareous sandstone or glass industries
  • Determination of the moisture of coke and sinter mixtures