Low amperage electronic milk level detector

Details Low amperage electronic milk level detector Low amperage electronic milk level detector

A - Human Necessities

01

J

A01J 5/01 (2006.01) A01J 5/04 (2006.01) A01J 9/00 (2006.01) G01F 23/24 (2006.01) G01F 23/26 (2006.01)

Patent

CA 2143812

An electric device is adapted to detect the level of liquid in a receptacle in view of controlling this level of liquid. The receptacle is installed on a milking system for accumulating either milk drawn through piping of the milking system from at least an animal being milked or water during a washing operation of that piping. At least two electrodes are mounted in the receptacle. When the level of liquid reaches a predetermined level, the two electrodes are electrically interconnected and a detecting current flows through the liquid between the two electrodes. The detecting current has a frequency situated within a frequency range substantially higher than 60 Hz, in which the animal being milked has a lower sensitivity to electric current. The higher frequency of the detecting current also reduce a capacitive impedance formed by the two electrodes and the water during the washing operation of the milking system to thereby enable a low-intensity detecting current to be established both in milk and water with low-amplitude voltages applied to the electrodes.

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