Electrolytic biocide-generating unit with flow transition detection

A biocide-generating system for inhibiting bio-fouling within a water system, the biocide-generating device comprising:

• a housing including a water inlet for receiving water from the water system and a water outlet for outputting water containing biocide to the water system;
• an electrode arrangement including first and second electrodes positioned in the housing for generating biocide in the water within the housing;
• and
• an electrical power circuit for establishing a flow of electrical current between first and second electrodes of the electrode arrangement for generating the biocide in the water within the first chamber electrolytic cell;
• a flow sensor for sensing water flow through the housing;
• and
• a system controller that controls the electrical power circuit and interfaces with the flow sensor, wherein the system controller is configured to monitor the water flow through the housing and to stop the electrical power supply from supplying electrical current to the electrode arrangement when the water flow decreases by more than a predetermined amount over a predetermined time period.