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US 7,622,304 B2Granted
Carbon dioxide sensor and method of determining partial pressure of carbon dioxide
AssigneeAlertis Medical AS
InventorsTor Inge Tonnessen, Peyman Mirtaheri
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Abstract
A carbon dioxide sensor and a method of detecting carbon dioxide using the sensor are provided, the sensor includes a closed chamber having as a wall portion thereof a substantially watertight, carbon dioxide-permeable membrane, two electrodes disposed in the chamber, and a film of substantially electrolyte-free liquid disposed in the chamber capable of simultaneously contacting the membrane and both of the electrodes.
Claims6
A carbon dioxide sensor, comprising:
- a closed chamber including as a wall portion thereof a substantially water-tight, carbon dioxide-permeable membrane;
- two electrodes disposed in said chamber;
- and
- a film of substantially electrolyte-free liquid disposed in said chamber capable of simultaneously contacting said membrane and both of said electrodes;
- wherein said electrodes are configured to receive an alternating electrical potential from a supply source other than said electrolyte-free liquid, said alternating electrical potential having a frequency of 20 to 10,000 Hz whereby to cause an alternating current in said liquid.
2 more elements
Dependencies are inferred from the claim text.