Patent ID: 6024875
Filing Date: 2000-02-15
Classification: A01K,G05D

Abstract:
A method of controlling the oxygen content of water at an outlet of a unit for dissolving oxygen in water, the method comprising:measuring the oxygen content C.sub.o of the water at the outlet of the unit with a sensor;comparing the oxygen content C.sub.o with a setpoint value C.sub.set ; andif the measured oxygen content C.sub.o is less than the setpoint value C.sub.set, a cycle of feeding oxygen to the unit is initiated, the feed cycle comprising a period T.sub.i of injecting oxygen into the unit, during which a valve controlling the flow rate of the oxygen feeding the unit is in the open position, and a pause period T.sub.p during which the valve is in the closed position, the pause period corresponding substantially to the inertia of the unit in responding to the oxygen being injected.