Device for measuring changes in pressure

Details Device for measuring changes in pressure Device for measuring changes in pressure

1997-04-30

1999-09-21

Brock, Michael

Measuring and testing

With fluid pressure

Leakage

G01M 332

Patent

active

059556587

ABSTRACT:
A device for measuring pressure changes, and preferably for testing the tightness of a fuel tank, wherein a high-pass filter, the time constant of which is greater than the time constant of the pressure changes to be measured and less than the time constant of the pressure changes of the surrounding air, is arranged behind an absolute-pressure sensor pressure in the fuel tank.

REFERENCES:
patent: 4177496 (1979-12-01), Bell et al.
patent: 4369661 (1983-01-01), Gibb
patent: 5369984 (1994-12-01), Rogers et al.
patent: 5467641 (1995-11-01), Williams et al.
patent: 5507176 (1996-04-01), Kammeraad et al.
patent: 5509296 (1996-04-01), Kolb
Sensoren (sensors) by Dr. Hanno Schaumburg, B.G. Teubner Stuttgart 1992 pp. 184-187.

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