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Amperometric sensor system

  • US 8,984,931 B2
  • Filed: 10/16/2012
  • Issued: 03/24/2015
  • Est. Priority Date: 02/15/2011
  • Status: Active Grant
First Claim
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1. A method for quantifying two species in water, comprising:

  • applying a first differential measurement potential between at least first and second electrodes of at least one sensor probe;

    measuring a first output signal responsive to the concentration of a parameter of water to be measured and responsive to the first differential measurement potential;

    applying a second differential measurement potential between the at least first and second electrodes of the at least one sensor probe, the second differential measurement potential being different from the first differential measurement potential;

    measuring a second output signal responsive to the concentration of the parameter of water to be measured and responsive to the second differential measurement potential;

    determining a ratio of the first output signal to the second output signal; and

    determining which of the two species is present based on the ratio of the first output signal to the second output signal; and

    calculating and quantifying the species present.

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