Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device
Patent
1980-03-14
1982-04-13
Tokar, Michael J.
Electricity: measuring and testing
Electrolyte properties
Using a conductivity determining device
119 1414, G01N 2742
Patent
active
043250289
ABSTRACT:
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 difference in value among quarter mammae is obtained by performing a subtraction between the minimum conductivity selected out among these traps and the other conductivity values.
Said differential value is compared with predetermined reference values. The outputs of comparator circuits are divided into three groups. When the output of any one group is below a lower limit value, the milk which gives such output is indicated as normal. If the output is higher than an upper limit value, the milk is indicated as abnormal, and when intermediate these limits, an indication of quasi-abnormality is given. Especially for abnormal and quasi-abnormal milk a warning is given by sounding a buzzer.
REFERENCES:
patent: 2898549 (1959-08-01), Miller
patent: 3358223 (1967-12-01), Birnstingl
patent: 3512080 (1970-05-01), Hanson
patent: 3664306 (1972-05-01), Quayle
patent: 3762371 (1973-10-01), Quayle
Eisai Co. Ltd.
Tokar Michael J.
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