Pressure sensor for high-temperature liquids. [LMFBR]

Patent · Tue Aug 01 00:00:00 EDT 1978

OSTI ID:6309998

Forster, G A

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 displacement 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.

• Assignee: Dept. of Energy
• Patent Number(s): US 4103555
• Application Number: TRN: 79-010426
• OSTI ID: 6309998
• Resource Relation: Patent File Date: Filed date 6 Jun 1977; Other Information: PAT-APPL-804,123
• Country of Publication: United States
• Language: English

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