Arrangement and method for liquid level measurement

G - Physics – 01 – F

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G01F 23/22 (2006.01) G01F 23/26 (2006.01)

Patent

CA 1208453

ABSTRACT The invention relates to 1) an arrangement and 2) method for the measurement of the level of an electrically conductive liquid, in a preferred form of the invention the liquid is milk provided within a suit- able container, the arrangement includes at least two spaced apart electrodes and an elongate coil which are at least partially immersed in the electrically conductive liquid, means are provided for passing an alternating current through and between the first and second electrodes, by way of the electrically conductive liquid. This forms or creates an electro- magnetic field about the first electrode which is then picked up by current and induced in the coil. Means are provided to convert and read the electro-magnetic field into a substantially linear function (current) of the level of the electrically conductive liquid. The method includes at least partially immersing at least two electrodes and one elongate coil in an electrically conductive liquid. An alternating current is then passed through and between the first and second electrodes by way of the electrically conductive liquid. This then forms an electro-magnetic field about at least one of the electrodes. The electro-magnetic field is picked up by and current induced in the coil. The electro-magnetic field is then converted into a substantially linear function (current) of the level of the electrically conductive liquid.

444501

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