Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Reexamination Certificate
2006-06-20
2006-06-20
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
C073S706000, C257S417000
Reexamination Certificate
active
07062974
ABSTRACT:
The invention relates to a pressure transmitter for an overload-proof pressure gauge, comprising a base body, a separating membrane disposed on a pressure-sensitive side of the pressure transmitter and subjectable to a pressure to be measured, a communicating chamber located inside said base body, which receives a pressure transmission medium, said chamber being closed on the pressure-sensitive side by the separating membrane, wherein the coefficient of thermal expansion of the pressure transmission medium is established in such a way that a temperature-induced change in the volume of the communicating chamber equals a temperature-induced change in the volume of the pressure transmission medium.
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Boehler Ewald
Jacob Jorn
Allen Andre
Lefkowitz Edward
O'Shea, Getz & Kosakowski, P.C
VEGA Grieshaber KG
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