Method for determining a status indicator of a water analysis device

摘要

The method involves determining parameter values (ps1-ps3) for technical parameters i.e. motor current of a drive motor, of a water-analysis apparatus (10), respectively. Deviation values (ds1-ds3) of the respective parameter values are determined with respect to an associated parameter-reference value. Deviation relevance-values (ys1-ys3) are determined from the deviation values, respectively using parameter-specific deviation relevance functions (fs1-fs3) that are different from each other. A condition indicator (I) is calculated from the relevance-values using an indicator function (fi).