Animal husbandry – Milkers – With signals – indicators – registers – and timers
Patent
1994-03-09
1996-01-30
Price, Thomas
Animal husbandry
Milkers
With signals, indicators, registers, and timers
A01J 500
Patent
active
054873592
ABSTRACT:
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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