Strain gauges for the pressure sensor

Details Strain gauges for the pressure sensor Strain gauges for the pressure sensor

1987-12-24

1989-10-31

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73708, 73720, 338 4, 338 42, G01L 708, G01L 904

Patent

active

048768936

ABSTRACT:
In order to improve the stabilization and the heat-resistance of a strain gauge, the strain gauge is made of an amorphous alloy including Ni (nickel), Cr (Chromium) and Si (silicon). The amorphous alloy including Ni, Cr and Si has a high crystallization point, its temperature co-efficient of resistance is almost zero obtained by annealing. The amorphous alloy is stabilized from low to high temperatures and thus can be used from low to high temperatures without compensation. The amorphous alloy is a non-magnetic substance and the strain gauge thus is not substantially affected by external electromagnetic noise.

REFERENCES:
patent: 3899766 (1975-08-01), Mermelstein
patent: 4500864 (1985-02-01), Nakane et al.
patent: 4511877 (1985-04-01), Nishikawa

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