Efficient dredging is based on the optimum ratio between the solid concentration and flow rate of the dredged material. The radiometric measuring system LB 444 is used to monitor the concentration online. The non-contacting measurement is maintenance-free and as a result of the sophisticated detector stabilization, highly reliable measuring results are guaranteed for many years of operation. Vibration, weather or varying particle size and composition have no effect on the measuring performance. The use of high-sensitive scintillation detectors leads to superior measuring accuracy and to a significant reduction of source activity by up to 80% - depending on measuring conditions and system configuration.
In combination with a flow rate signal, the measurement provides reliable information about the yield and the total mass of dredged material.