Strain gage differential pressure measurement in a fluid...

Details Strain gage differential pressure measurement in a fluid... Strain gage differential pressure measurement in a fluid...

2007-12-18

2007-12-18

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

Reexamination Certificate

active

11737890

ABSTRACT:
Apparatus and method for strain gage measurement of differential pressure across a body inserted into a flowing fluid where the body includes an exterior upstream facing portion, an exterior downstream facing portion and interior surfaces. At least one first electrically resistive strain gage having connecting terminals is disposed on one or more of the interior surfaces of the upstream facing portion and at least one second electrically resistive strain gage having connecting terminals is disposed on one or more of the interior surfaces of the downstream facing portion. The first and second strain gages are electrically connected to form the legs of a full Wheatstone Bridge, the electrical output of which is directly related to the differential pressure across the inserted body.

REFERENCES:
patent: 4561311 (1985-12-01), Keyes et al.
patent: 6220103 (2001-04-01), Miller et al.
patent: 7258024 (2007-08-01), Dimarco et al.

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