| 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, LB456 Microwave
Moisture Analyzer and LB350
Neutron Moisture Analyzer.
LB456 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.
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