Low pressure measurement devices in high pressure environments
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United States of America Patent
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Mar 15, 2011
Grant Date -
Jan 28, 2010
app pub date -
Oct 7, 2009
filing date -
Dec 7, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.
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