| 摘要 |
A pulsator (23) provides alternating vacuum pressure and atmospheric pressure to an elastomeric liner (35) in a sleeve (13) of a milking claw (11) in a diary barn. The purpose of pulsation is to alternate to cow teat between a milking phase and a rest phase. The invention (41) monitors the operation of the pulsator to determine if the pulsator is operating satisfactorily. The invention records data during a calibration mode from the pulsator in normal operation. The data that is recorded is the duration of the miling phase and the rest phase and the assocated pressures. During pulsator operation, the invention measures the pulsation between atmospheric and vacuum pressures provided to the milking claw and compares this measured data to the recorded calibraton data.If the pulsator is not found to be operating within predetermined tolerances, then an indication of a pulsator malfunction is provided, typically in the form of a light located in the milking pen. This indicates to the milking crew that the pulsator requires attention and should not be used until properly fixed
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