Water analyzer with multiple electrodes
First Claim
1. A water analyzer having a plurality of electrodes, including electrodes which interfere with one another, for measuring a plurality of conditions, said analyzer comprising:
- a first electrode of the type which uses an active measurement which perturbs the solution in which it is used when it is energized;
a second electrode of the type whose reading is affected by the operation of the first electrode, said second electrode being positioned in a fixed relationship with respect to the first electrode; and
sequencing means which activate said first electrode at a time different from the reading of said second electrode.
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Accused Products
Abstract
A water analyzer having several electrodes of the type which normally interfere with one another. These electrodes include a first electrode which is an active measurement electrode which perturbs the solution in which it is used and a second electrode whose reading is affected by the operation of the first electrode. Accurate readings are provided by sequencing the operation of the electrodes so that they are not always operating at the same time. In addition, further correction of the readings is provided to compensate for the known error resulting from the operation of the active electrode or electrodes. Such electrodes read conditions such as pH, dissolved oxygen and conductivity.
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Citations
13 Claims
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1. A water analyzer having a plurality of electrodes, including electrodes which interfere with one another, for measuring a plurality of conditions, said analyzer comprising:
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a first electrode of the type which uses an active measurement which perturbs the solution in which it is used when it is energized; a second electrode of the type whose reading is affected by the operation of the first electrode, said second electrode being positioned in a fixed relationship with respect to the first electrode; and sequencing means which activate said first electrode at a time different from the reading of said second electrode. - View Dependent Claims (2)
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3. A water analyzer having a plurality of electrodes, including electrodes which interfere with one another, for measuring a plurality of conditions for a period of time even after such electrode has been de-energized, said analyzer comprising:
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a first electrode of the type which is an active measurement which perturbs the solution in which it is used when it is energized; a second electrode of the type whose reading is affected by the operation of the first electrode, said second electrode being positioned in a fixed relationship with respect to the first electrode; sequencing means which activate said first electrode at a time different from the reading of said second electrode; and preset correction means which correct the readings of said second electrode based upon its interaction with the first electrode. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification