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US 10,948,449 B2Granted
Sensor with multiple inlets
AssigneeMSA Technology, LLC
InventorsBrian Keith Davis, Michael Alvin Brown, Mark Flori Zanella, Sr.
Life of this patent
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Abstract
An electrochemical gas sensor includes a sensor housing having a plurality of inlet passages, wherein each of the plurality of inlet passages has a cross-sectional area of no greater than 11,309 μm2. The electrochemical gas sensor further includes a working electrode within the housing which is responsive to an analyte gas and an electrolyte within the sensor housing in ionic contact with the working electrode.
Claims23
An electrochemical gas sensor, comprising:
- a sensor housing comprising a plurality of inlet passages, each of the plurality of inlet passages having a cross-sectional area of no greater than 11,309 μm2, and wherein a cumulative geometric area of the plurality of inlet passages is in the range of 0.25 mm2 to 2.25 mm2;
- a gas diffusion membrane inside the sensor housing;
- a working electrode within the sensor housing, which is responsive to an analyte gas, the gas diffusion membrane being positioned between the plurality of inlet passages and the working electrode so that gas passing through the plurality of inlet passages transports through the gas diffusion membrane to the working electrode;
- and
- an electrolyte within the sensor housing in ionic contact with the working electrode.
2 more elements
A method of detecting an analyte gas comprising:
- providing an electrochemical gas sensor, comprising a sensor housing comprising a plurality of inlet passages, each of the plurality of inlet passages having a cross-sectional area of no greater than 11,309 μm2, and wherein a cumulative geometric area of the plurality of inlet passages is in the range of 0.25 mm2 to 2.25 mm2, a gas diffusion membrane inside the sensor housing;
- a working electrode within the sensor housing which is responsive to the analyte gas, the gas diffusion membrane being positioned between the plurality of inlet passages and the working electrode so that gas passing through the plurality of inlet passages transports through the gas diffusion membrane to the working electrode;
- and an electrolyte within the sensor housing in ionic contact with the working electrode.
A method of fabricating an electrochemical gas sensor, comprising:
- providing a sensor housing comprising a plurality of inlet passages, each of the plurality of inlet passages having a cross-sectional area of no greater than 11,309 μm2, and wherein a cumulative geometric area of the plurality of inlet passages is in the range of 0.25 mm2 to 2.25 mm2, providing a gas diffusion membrane inside the sensor housing;
- providing a working electrode within the sensor housing which is responsive to an analyte gas, the gas diffusion membrane being positioned between the plurality of inlet passages and the working electrode so that gas passing through the plurality of inlet passages transports through the gas diffusion membrane to the working electrode;
- and providing an electrolyte within the sensor housing in ionic contact with the working electrode.
Dependencies are inferred from the claim text.