Strain gage

Details Strain gage Strain gage

1987-08-14

1988-10-04

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

338 4, G01L 708, G01L 906

Patent

active

047748435

ABSTRACT:
In an improved strain gage for measuring pressure differentials within areas of varying pressure there is provided a flexible sapphire diaphragm having disposed thereon a Wheatstone bridge. The diaphragm being attached to a base portion by way of a glass bonding material. The base portion's function being to support the flexible diaphragm without interfering with the measurement of strain. The diaphragm having a recess extending to a predetermined depth thereby defining a recessed area having a peripheral edge in order to create pressure points at the peripheral edge of the recess adjacent the recessed area of the diaphragm.

REFERENCES:
patent: 4691575 (1987-09-01), Sonderegger et al.

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