GB2127156A - Electrical conductivity device for detecting mastitis in dairy cows - Google Patents

Electrical conductivity device for detecting mastitis in dairy cows

Info

Publication number
GB2127156A
GB2127156A GB08328958A GB8328958A GB2127156A GB 2127156 A GB2127156 A GB 2127156A GB 08328958 A GB08328958 A GB 08328958A GB 8328958 A GB8328958 A GB 8328958A GB 2127156 A GB2127156 A GB 2127156A
Authority
GB
United Kingdom
Prior art keywords
conductivity
milk
measurements
electrical
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08328958A
Other versions
GB2127156B (en
GB8328958D0 (en
Inventor
Earl Levell Tippetts
George B Bersonnet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wescor Inc
Original Assignee
Wescor Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wescor Inc filed Critical Wescor Inc
Publication of GB8328958D0 publication Critical patent/GB8328958D0/en
Publication of GB2127156A publication Critical patent/GB2127156A/en
Application granted granted Critical
Publication of GB2127156B publication Critical patent/GB2127156B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/013—On-site detection of mastitis in milk
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/013—On-site detection of mastitis in milk
    • A01J5/0133—On-site detection of mastitis in milk by using electricity, e.g. conductivity or capacitance
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/013—On-site detection of mastitis in milk
    • A01J5/0136—On-site detection of mastitis in milk by using milk flow characteristics, e.g. differences between udder quarters or differences with previous milking runs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/04—Dairy products

Abstract

An electrical conductivity testing device for detecting mastitis in dairy cows includes an inlet (56) for receiving a sample of milk to be tested, a conductivity cell (60) having a milk flow-through testing passage (59, 61, 62) in flow communication with the inlet, and a milk discharge outlet (65) in flow communication with the conductivity cell, so that a milk sample enters the inlet, flows through the conductivity cell, and flows out through the discharge outlet. The flow described may be continuous or may be discontinuous so that the sample is held in the conductivity cell at least during taking of the conductivity measurement. The conductivity cell is arranged so that it is completely filled with milk during the taking of conductivity measurements. Electrical circuitry is provided to produce an electrical signal proportional to the conductivity of the milk in the conductivity cell. A preferred embodiment of the device takes conductivity measurements, individually and sequentially, of samples of milk from the four quarters of a cow's udder and produces electrical signals representing respective individual conductivity measurements on a scale of from 0 to 9 by electrical comparison of such conductivity measurements with a reference value (31), preferably by means of a bridge amplifier circuit (16, 31, and 32), and exhibits respective digits representative of such measurements, preferably side-by-side, on a readout screen (25) provided as a part of the instrument.
GB08328958A 1982-03-18 1983-03-16 Electrical conductivity device for detecting mastitis in dairy cows Expired GB2127156B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35928282A 1982-03-18 1982-03-18
PCT/US1983/000362 WO1983003305A1 (en) 1982-03-18 1983-03-16 Electrical conductivity device for detecting mastitis in dairy cows

Publications (3)

Publication Number Publication Date
GB8328958D0 GB8328958D0 (en) 1983-11-30
GB2127156A true GB2127156A (en) 1984-04-04
GB2127156B GB2127156B (en) 1987-01-07

Family

ID=23413142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08328958A Expired GB2127156B (en) 1982-03-18 1983-03-16 Electrical conductivity device for detecting mastitis in dairy cows

Country Status (3)

Country Link
DE (1) DE3337020T1 (en)
GB (1) GB2127156B (en)
WO (1) WO1983003305A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508458C2 (en) * 1996-04-24 1998-10-05 Alfa Laval Agri Ab Apparatus for measuring an electrical quantity of milk
NL1016633C2 (en) * 2000-11-17 2002-05-22 Martil Instr B V Method and device for determining at least one property of a biological fluid.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650199A (en) * 1948-09-28 1951-02-14 Londex Ltd Improvements in or relating to milking equipment
US4156179A (en) * 1977-02-16 1979-05-22 Ahi Operations Limited Electrical conductivity indicators and/or methods of using same
US4158809A (en) * 1977-02-28 1979-06-19 Beckman Instruments, Inc. Signal measuring and display control method and apparatus
JPS5513842A (en) * 1978-07-14 1980-01-31 Eisai Co Ltd Check unit for milking of udders
EP0010823A1 (en) * 1978-11-02 1980-05-14 Ahi Operations Limited Methods of and apparatus for measuring electrical conductivity

Also Published As

Publication number Publication date
DE3337020T1 (en) 1984-03-22
GB2127156B (en) 1987-01-07
WO1983003305A1 (en) 1983-09-29
GB8328958D0 (en) 1983-11-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee