Method for determining a status indicator of a water analysis device

摘要

#CMT# #/CMT# 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). #CMT#USE : #/CMT# Method for determining a condition indicator e.g. apparatus condition indicator and measured value quality indicator, of a water-analysis apparatus, that is utilized as a process analysis apparatus (all claimed) i.e. immersion probe, for quasi-continuous measuring application and as a laboratory apparatus for individual measuring application, and for qualitative and quantitative determination of analytes in water such as waste water and drinking water. #CMT#ADVANTAGE : #/CMT# The method enables supply of information about an overall technical condition of the water-analysis apparatus by determination of the condition indicator, such that a physical condition of the water-analysis apparatus or reliability of measured values supplied by the water-analysis apparatus can be easily judged. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic block diagram of a water-analysis apparatus with components for determining a condition indicator. I : Condition indicator ds1-ds3 : Deviation values fi : Indicator function fs1-fs3 : Parameter-specific deviation relevance functions ps1-ps3 : Parameter values ys1-ys3 : Deviation relevance-values 10 : Water-analysis apparatus.