Pressure sensor for high-temperature liquids

Patent · Sun Jan 01 00:00:00 EST 1978

OSTI ID:863146

Forster, George A ^[1]

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1. Westmont, IL

A pressure sensor for use in measuring pressures in liquid at high temperatures, especially such as liquid sodium or liquid potassium, comprises a soft diaphragm in contact with the liquid. The soft diaphragm is coupled mechanically to a stiff diaphragm. Pressure is measured by measuring the displacment of both diaphragms, typically by measuring the capacitance between the stiff diaphragm and a fixed plate when the stiff diaphragm is deflected in response to the measured pressure through mechanical coupling from the soft diaphragm. Absolute calibration is achieved by admitting gas under pressure to the region between diaphragms and to the region between the stiff diaphragm and the fixed plate, breaking the coupling between the soft and stiff diaphragms. The apparatus can be calibrated rapidly and absolutely.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4103555
• OSTI ID: 863146
• Country of Publication: United States
• Language: English

Related Subjects

pressure
sensor
high-temperature
liquids
measuring
pressures
liquid
temperatures
especially
sodium
potassium
comprises
soft
diaphragm
contact
coupled
mechanically
stiff
measured
displacment
diaphragms
typically
capacitance
fixed
plate
deflected
response
mechanical
coupling
absolute
calibration
achieved
admitting
gas
region
breaking
apparatus
calibrated
rapidly
absolutely
liquid sodium
pressure sensor
soft diaphragm
measured pressure
mechanical coupling
temperature liquid
measuring pressures
measuring pressure
temperature liquids
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