Apparatus and method for determining a liquid level in a steam drum
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United States of America Patent
Stats
-
Aug 23, 2005
Grant Date -
N/A
app pub date -
Oct 6, 2004
filing date -
Oct 6, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for determining a density-compensated liquid level in a vessel containing a mixture of liquid and vapors comprises a temperature sensor which produces a signal that is proportional to the temperature of the mixture; and a processing apparatus that includes one or more pressure sensors that allow for a measurement of an operating pressure and a differential pressure between the mixture in the vessel and a constant reference leg. The processing apparatus further includes an integral microprocessor for calculating the respective specific gravities of the liquid and vapor portions of the mixture based on the operating pressure, and then computing the density-compensated liquid level in the vessel based on such calculations of specific gravity and the differential pressure.
First Claim
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International Classification(s)
- 2004 Application Filing Year
- F22B Class
- 75 Applications Filed
- 30 Patents Issued To-Date
- 40 % Issued To-Date