Water purity testing system having reversing polarity
First Claim
1. For use in testing water for dissolved solids, a water testing system comprising:
- a pair of electrodes exposed to said water; and
means for applying a voltage and current of predetermined magnitude, duration and first polarity to at least one of said electrodes and for measuring the current flow between said pair of electrodes during a first time period, and for grounding said first electrode to prevent the buildup of debris with respect to said electrodes, and for ungrounding said first electrode, and for applying a voltage and current of predetermined magnitude, duration and second polarity, opposite said first polarity, to said at least one electrode and for measuring the current flow between said pair of electrodes during a second time period period, and for grounding said first electrode to prevent the buildup of debris with respect to said electrodes, and for ungrounding said first electrode.
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Accused Products
Abstract
A water purity testing system includes a sensor housing having an internal chamber within which pair of electrodes are supported. Fittings are provided for coupling the housing to a water supply and introducing water into the chamber. A temperature sensor is supported within the housing. A system processor and control unit is operatively coupled to the electrodes and the temperature sensor and includes a source of voltage DC current measurement which is applied to the electrodes to facilitate the measurement of water conductivity within the housing chamber, followed by a grounding period to provide as settling time to prevent the build-up of debris on the electrodes. The microprocessor also utilizes the temperature measurement during the testing cycle to derive a temperature factored measurement of total dissolved solids within the water under test. A display system is coupled to the microprocessor and is operated under microprocessor control to provide a test result display output. Other uses include a soft water sensor, purity testing system, water level control, and in a probe system for viscous materials.
47 Citations
18 Claims
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1. For use in testing water for dissolved solids, a water testing system comprising:
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a pair of electrodes exposed to said water; and means for applying a voltage and current of predetermined magnitude, duration and first polarity to at least one of said electrodes and for measuring the current flow between said pair of electrodes during a first time period, and for grounding said first electrode to prevent the buildup of debris with respect to said electrodes, and for ungrounding said first electrode, and for applying a voltage and current of predetermined magnitude, duration and second polarity, opposite said first polarity, to said at least one electrode and for measuring the current flow between said pair of electrodes during a second time period period, and for grounding said first electrode to prevent the buildup of debris with respect to said electrodes, and for ungrounding said first electrode. - View Dependent Claims (2, 3, 4, 5, 17)
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6. For use in testing water for dissolved solids in the presence of a first and a second electrode of a two electrode system, a method comprising the steps of:
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applying a constant voltage and a current to said first electrode; measuring the current flow with respect to said first electrode based upon said applying said voltage and current to said first electrode step; grounding said first electrode to prevent the build up of debris with respect to said electrodes; ungrounding said first electrode; applying a constant voltage and a current to said second electrode; measuring the current flow with respect to said second electrode based upon said applying said voltage and current to said second electrode step; and grounding said second electrode to prevent the build up of debris with respect to said electrodes ungrounding said second electrode. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. For use in testing water for dissolved solids in the presence of a first electrode and a second electrode of a two electrode system in contact with water, a method comprising the steps of:
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applying a first voltage and current to said first electrode with respect to said second electrode; measuring the current flow between said first and said second electrodes based upon said applying a first voltage and current step; ceasing application of said first voltage and current to said first electrode; applying a second voltage and current of substantially the same polarity of said first voltage and current to said second electrode with respect to said first electrode; measuring the current flow between said second and said first electrodes based upon said applying a second voltage and current step; ceasing application of said second voltage and current to said second electrode; and grounding said first electrode with respect to said second electrode to prevent the build up of debris with respect to said electrodes. - View Dependent Claims (14, 15, 16)
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18. For use in testing water for dissolved solids in the presence of a first and a second of electrode, a method comprising the steps of:
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applying a constant voltage and a current of a first polarity to said first electrode; and measuring the current flow with respect to said first electrode based upon said applying said voltage and current of said first polarity to said first electrode step; applying a constant voltage and a current of a second polarity, opposite to said first polarity, to said second electrode; and measuring the current flow with respect to said second electrode based upon said applying said voltage and current to said second electrode step; and grounding said first electrode with respect to said second electrode after the occurrence of both of said applying a constant voltage and a current of said first polarity and said applying a constant voltage and current of said second polarity steps are completed, in order to remove debris from said first and said second electrodes.
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Specification