Differential pressure sensing means and method

Patent · Tue May 09 04:00:00 EDT 1989

OSTI ID:5921487

Baker, B K; Hwan, R N; Leu, L A

A differential pressure sensing system is described comprising: first inlet means for receiving a fluid having a first pressure; second inlet means for receiving a fluid having a second pressure; a plurality of differential pressure sensing means connected to the first and second inlet means, each sensing means being means for sensing a pressure differential within a different predetermined range of pressures and providing a pressure signal representative thereof, and including a housing having a membrane separating the housing into two chambers with one chamber containing fluid from the first inlet means at the first pressure and the other chamber containing fluid from the second receiving means at the second pressure so that a pressure drop occurs across the membrane; and output means connected to the plurality of pressure sensing means for selecting a pressure signal from one of the pressure sensing means in accordance with the pressure difference between the fluids pressures and providing the selected signal as an output signal, and wherein the output means provides a signal to each pressure difference sensing means and a change in the pressure drop across the membrane causes a change in the signal so that in effect the output means sees the changed signal as the pressure signal from the pressure sensing means.

• Assignee: Texaco Inc., White Plains, NY
• Patent Number(s): US 4827772
• OSTI ID: 5921487
• Country of Publication: United States
• Language: English

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