High-pressure sensor

Details High-pressure sensor High-pressure sensor

1999-06-28

2000-07-25

Noori, Max

Measuring and testing

Fluid pressure gauge

Mounting and connection

73707, G01L 700

Patent

active

060924268

ABSTRACT:
A high-pressure sensor specially for monitoring pulsating hydraulic pressure impulses, as for example in injection systems of combustion engines is provided with a pressure space shaped balloon-like before the diaphragm part, enabling optimal measuring signals to be combined simultaneously with significantly reduced mechanical forces in the welded joint. In addition, welding techniques are proposed enabling a gapless internal welding zone to be achieved, so that notch effects and migratory cracks resulting from these and leading to fractures are obviated. As optimal connection between measuring head and threaded body a two-stage welding routine is proposed first an internal weld is performed by electrical upset welding and then external welding by electron beam, inert gas or laser welding.

REFERENCES:
patent: 4164938 (1979-08-01), Patton
patent: 5186055 (1993-02-01), Kovacich et al.
patent: 5850778 (1998-12-01), Fischbach

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