Isolation technique for pressure sensing structure

Details Isolation technique for pressure sensing structure Isolation technique for pressure sensing structure

2005-09-06

2005-09-06

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Fluid pressure gauge

With pressure and/or temperature compensation

C073S718000

Reexamination Certificate

active

06938490

ABSTRACT:
An electronic pressure-sensing device is isolated from corrosive, conductive gasses and fluids by a corrosion resistant metal diaphragm welded to a pressure port. The pressure-sensing device is attached to a support structure with a hole that provides a path from the diaphragm area to the pressure-sensing device. A fill fluid is sealed behind the diaphragm and fills the hole through the support structure to the electronic pressure-sensing device. In this design, any hostile chemical applied is completely isolated from the electronic sensor and associated adhesive seals by the metal diaphragm.

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