Pressure measuring sensor and apparatus having a seal between a housing having spring-elastic properties and a pressure measuring cell
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United States of America Patent
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Apr 6, 1999
Issued Date -
N/A
app pub date -
Jan 23, 1998
filing date -
Aug 4, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
Pressure or force measurement device for static or dynamic pressure measurement, in particular for high pressures or forces, having a housing including a pressure or force measuring cell, e.g., a piezoresistive or capacitive measuring cell. In such devices, service life and chemical resistance are problematic. The pressure measurement device includes the housing, a seal between the pressure medium and an inner chamber of the housing, a pressure measuring cell having a main face exposed to the pressure medium and which pressure measuring cell having a deflection when pressure loaded, which deflection leads to a relative movement between the pressure measuring cell and the housing in a region of the seal. In a region of the seal, the housing has spring-elastic properties. The pressure measurement device further includes a flange with an elastic sealing rib forming a through opening. The housing may be rotationally symmetrical with respect to the flange.
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