Device used as a warning system in drinking water and effluent when nitrates and ammonium exceed limiting values comprises a multiple component sensor system consisting of ion-selective membrane systems and only one reference system

摘要

Device comprises a multiple component sensor system (4) consisting of two or more ion-selective membrane systems (4a, 4b) and only one reference system (4c). A liquid to be monitored flow freely around one membrane system. Each membrane system is surrounded by a closed chamber and/or system so that material concentration of the liquid assigned to the chamber and/or system is not mixed with the other liquids. The liquids in the individual membrane systems and the liquid to be monitored are differentiated only by the material concentration to be monitored.