A method for determining the moisture content of samples by measuring the reflection - or transmission of microwaves

摘要

in a method for determining the phase shift in reflection or transmissionsmessungen with electromagnetic waves in a first reference measurement (leermessung) to erfassung the proportion of up to phase shift a second reference measurement in a representative sample of the repru00e4sentativprobe carried out by the phasenversch causediebung precisely determined. the auszumessenden samples. the samples are then phasengu00e4nge arising as a deviation from the corresponding phasengang orthe phase difference of the repru00e4sentativprobe treated and by humming / difference is taken into consideration, i.e.the actual phase shift of an individual sample is composed of the phase difference of the reference sample, and a relative phase shift.the deviations of the individual piece of the reference sample stems from.$a by comparing the frequency curves of individual sample / reference sample, the disturbing not report in this emerging phasengu00e4ngen largely eliminated and thus a more accurate bestimmung allows the phase.