Microwave On-Line Moisture Content Monitoring in Low-Hydrated Organic Materials

Abstract

Abstract Application of microwave attenuation meter operating at 9.4 GHz for continuous on-line monitoring of moisture content in low-hydrated /6 - 14 % H₂O/ materials of organic origin — such as sugar beet pulp, potato chips, chicory slides — at the outlet of drier is presented. The measurement is carried out while the medium is flowing through a metal container housing radiating horn antennas. The measurement accuracy was± 0.4 % H₂0. The meter provides an effective control of a drier in an industrial plant. Observations gained during the project which may be applied for other materials are discussed.