Electrodes, sensors and methods for measuring components in water
AssigneeDigital Concepts of Missouri, Inc.
InventorsMichael D. Mosley, Paul Decker
Life of this patent
Estimating the term…
Abstract
Improvements in references electrodes, halogen sensors, pH sensors, TDS sensors, combinations thereof, and related methods.
Claims43
A reference electrode assembly comprising a reference electrode in contact with a halide-saturated gel, the electrode and gel being enclosed within a non-conductive, waterproof container having a water-porous but not gel-porous, ion exchange interface.
A reference electrode assembly comprising a reference electrode in a non-conductive, waterproof container of a halide-saturated gel, the electrode thereby being in contact with the gel in the container, the waterproof container having a water-porous but not gel-porous, ion exchange interface.
An electrolytic combination comprising a reference electrode assembly in a water sample, the assembly comprising a reference electrode in contact with a halide-saturated gel, the electrode and gel being enclosed within a non-conductive, waterproof container having a water-porous but not gel-porous, ion exchange interface that provides electrolytic communication between the gel and the water sample.
A halogen sensor comprising a metal anode shielded by a low electrical resistance, water-permeable, oxygen barrier of at least about 0.004 inches in thickness, and a metal cathode.
A pH sensor comprising a cathode of a bare noble metal having an electroactive surface and an anode of a noble metal having an electroactive surface sealed within a Nafion tube such as to prevent exposure of the anode to ambient oxygen from the environment exterior to the tube, except as may pass through the tube.
A pH sensor comprising a pH-sensitive material encased in a Nafion tube such as to prevent exposure of the anode to ambient oxygen from the environment exterior to the tube, except as may pass through the tube.
A total dissolved sensor (TDS) comprising:
- a pair of spaced-apart electrodes excited by a sine wave voltage;
- a current amplifier and rectifier electrically responsive to the pair of spaced-apart electrodes to generate a voltage indicative of the voltage between the spaced-apart electrodes;
- a converter electrically responsive to the voltage indicative of the voltage between the spaced-apart electrodes to convert the indicative voltage for at least one of display and processing;
- a display electrically responsive to the converter to display a total dissolved solids measurement in water in which the pair of spaced apart electrodes is placed.
A method for measuring an amount of total dissolved solids in water, the method comprising:
- exciting a pair of spaced-apart electrodes with a sine wave;
- amplifying and rectifying a current from the spaced-apart electrodes to generate a voltage indicative of the voltage between the spaced-apart electrodes;
- converting the voltage indicative of the voltage between the spaced-apart electrodes for at least one of display and processing;
- and
- displaying a total dissolved solids measurement utilizing an output of the converter.
Dependencies are inferred from the claim text.