Differential pressure sensor with overload damping

Details Differential pressure sensor with overload damping Differential pressure sensor with overload damping

2006-04-04

2006-04-04

Noori, Max (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

C073S736000

Reexamination Certificate

active

07021149

ABSTRACT:
A differential pressure sensor includes a measuring mechanism having a chamber on the high-pressure side that is sealed by a first dividing membrane, and a chamber6on the low-pressure side that is sealed by a second dividing membrane. The first dividing membrane is loadable with a pressure acting on the high-pressure side and the second dividing membrane with a pressure acting on the low-pressure side, and the chamber on the high-pressure side is separated from the chamber on the low-pressure side by a pressure-sensitive element, especially a measuring membrane, and the chambers of the high- and low-pressure sides are filled with a transfer medium. For damping of overload pulses acting on the first dividing membrane on the high-pressure side, a hydraulic throttle is provided, which is arranged on the low-pressure side between the second dividing membrane and the pressure-sensitive element.

REFERENCES:
patent: 4527428 (1985-07-01), Shimada et al.
patent: 4668889 (1987-05-01), Adams
patent: 4713969 (1987-12-01), Ishii
patent: 4995266 (1991-02-01), Tobita et al.

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