High pressure liquid level monitor

Patent · Sun Jan 01 00:00:00 EST 1984

OSTI ID:864999

Bean, Vern E.; Long, Frederick G.

A liquid level monitor for tracking the level of a coal slurry in a high-pressure vessel including a toroidal-shaped float with magnetically permeable bands thereon disposed within the vessel, two pairs of magnetic field generators and detectors disposed outside the vessel adjacent the top and bottom thereof and magnetically coupled to the magnetically permeable bands on the float, and signal processing circuitry for combining signals from the top and bottom detectors for generating a monotonically increasing analog control signal which is a function of liquid level. The control signal may be utilized to operate high-pressure control valves associated with processes in which the high-pressure vessel is used.

• Research Organization: National Bureau of Standards, Washington, DC (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AI22-80PC30258
• Assignee: The United States of America as represented by the United States Department of Energy (Washington, DC)
• Patent Number(s): 4,447,743
• Application Number: 06/372,861
• OSTI ID: 864999
• Resource Relation: Patent File Date: 1982 Apr 28
• Country of Publication: United States
• Language: English

Related Subjects

pressure
liquid
level
monitor
tracking
coal
slurry
high-pressure
vessel
including
toroidal-shaped
float
magnetically
permeable
bands
thereon
disposed
pairs
magnetic
field
generators
detectors
outside
adjacent
top
bottom
coupled
signal
processing
circuitry
combining
signals
generating
monotonically
increasing
analog
control
function
utilized
operate
valves
associated
processes
processing circuitry
control valves
magnetically permeable
signal processing
control signal
pressure vessel
magnetic field
liquid level
coal slurry
control valve
magnetically coupled
pressure liquid
disposed outside
high-pressure vessel
pressure control
signal process
field generator
valves associated
vessel including
field generators
level monitor
/307/73/137/324/340/