Automatic Ammonium Analyzer
AssigneeEndress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG
InventorUlrich Kathe
Life of this patent
Estimating the term…
Abstract
For an automated determination of a ammonia nitrogen content in a liquid sample, an analyzer and method are provided. The following steps are performed by the method: generating a reagent solution by electrolysis that contains hypochlorite ions to be added to the liquid sample, and feeding the reagent solution into the liquid sample; feeding at least one other reagent solution into the liquid sample and generating a reaction mixture from the reagent solutions and the liquid sample; sensing a measuring signal with a photometric measuring device that correlates with a measuring variable of the reaction mixture; and on the basis of the measuring signal, determining a measuring value for the ammonia nitrogen content with an electronic control device.
Claims20
1-19. (canceled)
A method for an automated determination of the ammonia nitrogen content in a liquid sample, comprising the steps of:
- generating a reagent solution by electrolysis that contains hypochlorite ions to be added to the liquid sample, and feeding the reagent solution into the liquid sample;
- feeding at least one other reagent solution into the liquid sample and forming a reaction mixture from the reagent solutions and the liquid sample;
- sensing a measuring signal of a photometric measuring device that correlates with a measuring variable of the reaction mixture;
- and
- determining a measuring value for the ammonia nitrogen content with an electronic control device, on the basis of the measuring signal.
An analyzer for determining an ammonia nitrogen content in a liquid sample, comprising:
- an electrolysis device for generating a reagent solution containing hypochlorite ions to be fed into the liquid sample;
- at least one liquid tank containing a reagent solution to be fed into the liquid sample, which contains one of:
- a phenol compound and/or pentacyanonitrosylferrate;
- at least one feed and dosing device that serves to dose and feed the reagent solutions into the liquid sample to form a reaction mixture from the liquid sample and the reagent solutions;
- a photometric measuring device to provide a measuring signal correlated to a measuring variable of the reaction mixture;
- and
- a control device that is equipped to control said electrolysis device, said feed and dosing device and said photometric measuring device, and to determine a measuring value for the ammonia nitrogen content based on the measuring signal provided by said measuring device.
Dependencies are inferred from the claim text.