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System, apparatus, and method for measuring an oxygen concentration of a gas

  • US 20060027012A1
  • Filed: 10/05/2005
  • Published: 02/09/2006
  • Est. Priority Date: 01/30/2003
  • Status: Active Grant
First Claim
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1. A method of measuring an oxygen concentration of a gas, the method comprising:

  • receiving an output signal from an oxygen sensor cell;

    measuring an oxygen concentration within a measuring cell; and

    varying a flow of oxygen ions within the measuring chamber by varying a pump current through a pump cell controlling the flow of oxygen between a first constant pump current and a second constant pump current in response to the output signal.

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