Flow-through pressure transducer

Details Flow-through pressure transducer Flow-through pressure transducer

G - Physics

01

L

G01L 19/06 (2006.01) G01L 9/04 (2006.01) G01L 19/04 (2006.01) E21B 47/06 (2006.01)

Patent

CA 2636902

A flow through pressure transducer for use in harsh environments like oil well cement slurry mixing process. A thin cylindrical sensor sleeve is protected from fluid wear and corrosion by a molded elastomeric sleeve provided on its internal diameter that prevents fluid from reaching the sensor sleeve. Pressure is transmitted to the sensor sleeve through the elastomeric sleeve. The sensor sleeve is mounted in such a way that the fluid pressure only exerts hoop stresses on the sensor sleeve. Two dual strain gauges are mounted on the outside of the sensor sleeve in spaced apart relationship for measuring hoop stress and an additional strain gauge is mounted 90 degrees to the stress direction for temperature compensation. The body or spool of the transducer surrounds and protects the sensor sleeve and prevents leakage in the event of sleeve failure. The spool is held in between transducer outer flanges by threaded fasteners.

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