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Systems and methods to control humidity effects on sensor performance

United States Patent Application

20040110299
A1
View the Complete Application at the US Patent & Trademark Office
A sensor system for controlling humidity effects on sensor performance comprising one or more sensor devices, a moisture reservoir disposed adjacent to the sensor array, wherein the moisture reservoir comprises desiccant materials operable for reversibly exchanging moisture with a sampled atmosphere, and a hydrophobic semi-permeable membrane permeable to volatile organic compounds and impermeable to water. A probe device for sampling groundwater comprising a sensor array, a moisture reservoir disposed adjacent to the sensor array, wherein the moisture reservoir comprises desiccant materials operable for extracting moisture from a sampled atmosphere, a hydrophobic semi-permeable membrane, a groundwater entry assembly, a power source, an analyte trap, and communications electronics. Methods for sampling a subaqueous environment using a probe device.
Sivavec, Timothy Mark (Clifton Park, NY)
10/ 315,397
December 10, 2002
[0001] The U.S. Government may have certain rights in this invention pursuant to contract DE AC26 number 01NT41188 awarded by the U.S. Department of Energy (DOE).