Basic errors of optical moisture meters

To ensure the linearity of the scale in the design of moisture meters, such measurement conditions are chosen under which the dependence of the transmission coefficient on informative and non-informative parameters is linear or close to it. Errors of optical moisture meters are determined at two stages: choosing the optimal measuring scheme and during calibration and verification of moisture meters. The existing variety of measuring circuits brings to the first place the problem of choosing the optimal measuring circuits, their structural and parametric optimization in terms of metrological indicators (random and systematic errors). The vast majority of moisture meters are based on a ratio metric scheme.