DEVICE FOR DETERMINING MASS FRACTION OF FAT AND DRY SKIM RESIDUE IN MILK Russian patent published in 1995 - IPC

FIELD: measuring equipment. SUBSTANCE: auto-circulating unit includes voltage comparator, inverter, and controlled source of reference voltage connected in series and AND element, vibrator, and amplifier connected in parallel. The output of the controlled source of reference voltage is connected to the second input of the comparator. The first input of the comparator is the first input of the auto-circulating unit. The output of the comparator is connected to the first input of the AND element. The second input of the AND element is the second input of the auto-circulating unit. The outputs of the power amplifier and vibrator are the first and second outputs of the auto-circulating unit. EFFECT: improved accuracy. 2 cl, 3 dwg