Method for determining a condition indicator of a water analysis apparatus
A method for determining a condition indicator of a water analysis apparatus includes determining a respective parameter value for each of at least two different technical parameters of the water analysis apparatus. A respective deviation value of each of the parameter values is determined with respect to an associated respective parameter reference value for each of the technical parameters. A respective deviation relevance value from each of the deviation values is determined using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other. Using an indicator function, a condition indicator is calculated from the determined deviation relevance values.
1. A method for determining a condition indicator of a water analysis apparatus, the method comprising:
providing a water analysis apparatus configured to measure at least two different technical parameters;
determining a respective parameter value for each of the at least two different technical parameters of the water analysis apparatus using at least one of a sensor and a counter;
determining a respective deviation value of each of the parameter values with respect to an associated respective parameter reference value for each of the technical parameters;
determining a respective deviation relevance value from each of the deviation values using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other;
calculating, using an indicator function, a condition indicator from the determined deviation relevance values; and
determining an overall condition of the water analysis apparatus using the condition indicator.
2. The method as recited in claim 1 , wherein the indicator function includes a term for an arithmetic mean of a plurality of the deviation relevance values.
3. The method as recited in claim 2 , wherein the term includes a multiplication of the smallest of the deviation relevance values by an arithmetic mean of other of the deviation relevance values.
4. The method as recited in claim 1 , wherein the condition indicator is an apparatus condition indicator.
5. The method as recited in claim 1 , wherein the condition indicator is a measured value quality indicator.
6. The method as recited in claim 1 , wherein the water analysis apparatus is a process analysis apparatus.
7. The method as recited in claim 1 , wherein a first of the parameter values is determined by a humidity sensor.
8. The method as recited in claim 1 , wherein a first of the parameter values is determined by a reagent quantity sensor.
9. The method as recited in claim 1 , wherein a first of the parameter values is the motor current of a drive motor.
10. The method as recited in claim 9 , wherein the drive motor is configured to drive a wiper for wiping a measurement window.
11. The method as recited in claim 1 , further comprising supplying the condition indicator to another apparatus component.
12. A water analysis apparatus configured to measure at least two different technical parameters, the water analysis apparatus comprising:
at least one of a sensor and a counter configured to determine a respective parameter value for each of the at least two different technical parameters; and
a condition indicator configured to determine an overall condition of the water analysis apparatus by a method comprising:
determining a respective parameter value for each of at least two different technical parameters of the water analysis apparatus with the at least one of a sensor and a counter;
determining a respective deviation value of each of the parameter values with respect to an associated respective parameter reference value for each of the technical parameters;
determining a respective deviation relevance value from each of the deviation values using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other; and
calculating, using an indicator function, the condition indicator for the water analysis apparatus from the determined deviation relevance values.
13. The water analysis apparatus as recited in claim 12 , wherein the indicator function includes a term for an arithmetic mean of a plurality of the deviation relevance values.
14. The water analysis apparatus as recited in claim 13 , wherein the term includes a multiplication of the smallest of the deviation relevance values by an arithmetic mean of other of the deviation relevance values.
15. The water analysis apparatus as recited in claim 12 , wherein the condition indicator is an apparatus condition indicator.
16. The water analysis apparatus as recited in claim 12 , wherein the condition indicator is a measured value quality indicator.
17. The water analysis apparatus as recited in claim 12 , wherein the water analysis apparatus is a process analysis apparatus.
18. The method as recited in claim 12 , wherein a first of the parameter values is determined by a humidity sensor.
19. The water analysis apparatus as recited in claim 12 , wherein a first of the parameter values is determined by a reagent quantity sensor.
20. The water analysis apparatus as recited in claim 12 , wherein a first of the parameter values is the motor current of a drive motor.
21. The water analysis apparatus as recited in claim 20 , wherein the drive motor is configured to drive a wiper for wiping a measurement window.
22. The water analysis apparatus as recited in claim 12 , further comprising supplying the condition indicator to another apparatus component.