Optical Fiber Pressure Sensor for Liquid Level Monitoring.

Cuomo, Frank

Optical Fiber Pressure Sensor for Liquid Level Monitoring.

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Abstract:

An apparatus for continuously monitoring changes in a liquid level in accordance with a differential pressure is provided. A sensor body immersed in the liquid supports two thin-filmed metallic diaphragms that are independently, axially responsive to pressure of the liquid. Each diaphragm has a different modulus of elasticity. Two fiber optic pressure sensors are mounted within an air space encased by the sensor body in combination with the two diaphragms. Each of the two fiber optic pressure sensors detects the axial response of one of the two diaphragms. The displacement difference between the two diaphragms is an indication of differential pressure related to the liquid level.

Author(s):

Cuomo, Frank

Author Organization(s):

DEPARTMENT OF THE NAVY WASHINGTON DC

Descriptive Note:

Patent Application, filed 22 Feb 94,

Pagination:

0014

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

PAT-APPL-199 868

Monitor Series:

ONR

Subject Terms

Joint Capability Areas:

JCA_6.1.1_Wired Transmission

Communities of Interest:

Sensors

Descriptor(s):

*FIBER OPTICS, *PATENT APPLICATIONS, *OPTICAL DETECTORS, *LIQUID LEVEL GAGES, AIR SPACE, DISPLACEMENT, LIQUIDS, MODULUS OF ELASTICITY, MONITORING, PRESSURE, DIAPHRAGMS(MECHANICS), LIQUID LEVEL CONTROL, LEVEL(QUANTITY), PRESSURE GAGES

Field(s)/Group(s):

Optical Detection and Detectors, Fiber Optics and Integrated Optics

Report Date:

1994 Feb 22