APPARATUS WITH A SELF-CLEANING ELECTRODE FOR SENSING AT LEAST ONE PARAMETER IN WATER

• Main Authors: HUANG XI, MOWLEM MATTHEW CHARLES, PASCAL ROBIN WILLIAM, MORGAN HYWEL
• Format: Patent
• Language: English
• Published: 13.08.2015
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; PHYSICS; TESTING

Apparatus (2) for sensing at least one parameter in water, which apparatus (2) comprises: (i) at least one electrode based sensor (4, 6) for sensing at least one parameter in water; and which apparatus (2) is such that: (ii) the electrode based sensor (4, 6) has a self-cleaning electrode; (iii) the electrode based sensor (4, 6) has a reference electrode; (iv) the self-cleaning electrode is stable in water; (v) the apparatus (2) is configured to operate by liberating chlorine from the water using a first waveform applied to the self-cleaning electrode; (VI) the apparatus (2) is configured to operate by liberating chlorine and oxygen from the water using a second waveform applied to the self-cleaning electrode; and (VII) the apparatus (2) is configured to preserve the condition of the reference electrode by periodically regenerating the reference electrode.