LYCOS RETRIEVER 
Electrical Conductivity: Measure
built 632 days ago
Electrical conductivity was measured in milliSiemens (mS) in milk from each quarter during every milking at 2-s intervals. A prototype computerized milkmeter combined with a prototype "Mastitis detector" (S.A. Christensen, Kolding, Denmark) was used for data collection. Sensors for measuring EC were incorporated in the milking unit. The milking unit was constructed such that milk from the different quarters remained separated until after EC measurements were obtained. The equipment was calibrated monthly.
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Electrical conductivity is a measure of how well a material accommodates the movement of an electric charge. It is the ratio of the current density to the electric field strength. Its SI derived unit is the Siemens per meter, but conductivity values are often reported as percent IACS. IACS is an acronym for International Annealed Copper Standard or the material that was used to make traditional copper-wire . The conductivity of the annealed copper (5.8108 x 107S/m) is defined to be 100% IACS at 20°C. All other conductivity values are related back to this conductivity of annealed copper. Therefore, iron with a conductivity value of 1.044 x 107 S/m, has a conductivity of approximately 18% of that of annealed copper and this is reported as 18% IACS.
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Electrical conductivity is a measure of how well a material accommodates the transport of electric charge. Its SI derived unit is the [S]iemens per metre, (A2s3m-3kg-1) (named after Werner von Siemens). It is the ratio of the current density to the electric field strength. This applies ... to the electrolytic conductivity of a fluid.
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Electrical conductivity is the ability of a material to carry electrical current. In water, it is generally used as a measure of the mineral or other ionic concentration. Conductivity is a measure of the purity of water or the concentration of ionized chemicals in water. However, conductivity is only a quantitative measurement: it responds to all ionic content and cannot distinguish particular conductive materials in the presence of others.
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Electrical conductivity is a measure of how well a material accommodates the transport of electric charge. Its SI derived unit is the siemens per metre , ( A 2 s 3 m -3 kg -1 ) (named after Werner von Siemens ). Electrical conduction is an electrical phenomenon where a material ( solid or otherwise) contains movable particles with electric charge , which can carry electricity . When a difference of electrical potential is placed across a conductor, its movable charges flow, and an electric current appears. Conductivity is defined as the ratio of the current density to the electric field strength. It is the reciprocal of electrical resistivity .
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Electrical conductivity can be measured using a meter and probe as well. The probe consists of two metal electrodes spaced 1 cm apart (... the unit of measurement is microSeimens or milliSeimens per centimeter). A constant voltage is applied across the electrodes resulting in an electrical current flowing through the aqueous sample. Since the current flowing through the water is proportional to the concentration of dissolved ions in the water, the electrical conductivity can be measured. The higher the dissolved salt/ion concentration, the more conductive the sample and hence the higher the conductivity reading.
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