| 摘要 |
<p>In every flow passage of milk sucked out from each quarter mamma through each teatcup, a trap is equipped. The electric conductivity of the milk is measured independently by means of electrodes equipped in each trap. The differential value among quarter mammae is obtained by performing a subtraction between the minimum conductivity selected out among these traps and the other conductivity values. The said differential value is compared with predetermined reference value. The outputs of comparator circuits are divided into three groups. When the output of any one group is below the lower limit value, a milk which gives such output is indicated as normal. If the output is over a higher limit value, the milk is indicated as abnormal, and when intermediate, those limits , an indication of quasi-abnormality is given. Especially for abnormal and quasi-abnormal milk a warning is given by sounding a buzzer.</p> |
