Apparatus and Method for Measuring Level
AssigneeHall Labs LLC
InventorsLarry Baxter, Eric Mansfield, Aaron Sayre, David Frankman
Life of this patent
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Abstract
A vessel with a cavity for measuring level is disclosed. The vessel includes a differential pressure sensor having a first port and a second port, a reference tube that connects the first port of the differential pressure sensor to a bottom portion of the cavity, and an impulse tube that connects the second port of the differential pressure sensor to an impulse tube ending. At least a portion of the impulse tube extends through the cavity and ends at a fluid inlet. The fluid inlet is located at a level above the reference tube.
Claims20
An apparatus, comprising:
- a vessel comprising a cavity;
- a differential pressure sensor having a first port and a second port;
- a reference tube that connects the first port of the differential pressure sensor to a bottom portion of the cavity;
- an impulse tube that connects the second port of the differential pressure sensor to an impulse tube ending;
- wherein at least a portion of the impulse tube extends through the cavity and ends at a fluid inlet;
- and
- wherein the fluid inlet is located at a level above the reference tube.
The apparatus of claim 5, wherein the level is between the reference tube and a full height of the vessel.
A method for measuring level comprising:
- passing a process fluid into a vessel, a portion of the process fluid filling a fluid inlet of an impulse tube of a differential pressure sensor, wherein the differential pressure sensor further comprises a reference tube, the reference tube connecting the differential pressure sensor to a bottom portion of the vessel and the impulse tube passing from the differential pressure sensor into the vessel and ending at the fluid inlet;
- and
- measuring the pressure difference created by the portion of the process fluid that passes into the fluid inlet compared to a pressure of the reference tube.
Dependencies are inferred from the claim text.