Density and fill level determination apparatus for has analysis unit, which determines energy spectrum of secondary radiation, and control and evaluation unit, which carries out drift stabilization

摘要

An analysis unit (7) determines at least a part of the energy spectrum of the secondary radiation detected by the reception unit (6), e.g. a rod scintillation unit. The secondary radiation is generated by interaction of transmitted radioactive radiation with the medium (2) in a container (3). A control and evaluation unit (8) determines the density and fill level of the medium in the container using measurement data provided by the reception unit and carries out a drift stabilization of the measurement unit (1).