Linear relationship between tracks

摘要

The invention relates to an operating-time fill level measuring device and an operating-time fill level measuring method, in which the echoes of consecutive echo curves are grouped and combined into tracks. The linear relationship between two tracks is then determined, and said linear relationship is used in order to determine one or more unknowns. For example, the dielectric constant of the filling medium, the container length or the probe length, or the position of an expected echo can be derived from said linear relationship.