Measuring and testing – Gas content of a liquid or a solid – By pressure of the gas
Reexamination Certificate
2011-01-11
2011-01-11
Caputo, Lisa M (Department: 2855)
Measuring and testing
Gas content of a liquid or a solid
By pressure of the gas
C073S019070, C073S019100, C073S861610
Reexamination Certificate
active
07866201
ABSTRACT:
A method and device for the measurement of dissolved gas within a fluid. The fluid, substantially a liquid, is pumped into a pipe. The flow of the fluid is temporally restricted, creating one or more low pressure regions. A measurement indicative of trapped air is taken before and after the restriction. The amount of dissolved air is calculated from the difference between the first and second measurements. Preferably measurements indicative of trapped air is obtained from one or more pressure transducers, capacitance transducers, or combinations thereof. In the alternative, other methods such as those utilizing x-rays or gamma rays may also be used to detect trapped air. Preferably, the fluid is a hydraulic fluid, whereby dissolved air in the fluid is detected.
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Caputo Lisa M
Dobbs Michael J.
Lang Mark C.
Lucas John T.
Roy Punam
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