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US 7,458,275 B2Granted
Welded header for pressure transmitter
AssigneeRosemount Inc.
InventorsLowell A. Kleven, Mark G. Romo
Life of this patent
Estimating the term…
Abstract
A pressure transmitter comprises a metal wall separating a process pressure chamber from an electronics compartment. The metal wall has a stepped bore with a bore shelf facing the process pressure chamber. A metal header has a stepped outer rim with a header shelf that contacts the bore shelf. The metal header includes at least one electrical feedthrough with a glass-to-metal seal adjacent the stepped outer rim. A welded seal seals the stepped outer rim to the stepped bore.
Claims28
A pressure transmitter for use in an industrial process, comprising:
- a housing having a metal wall that includes a stepped bore therethrough with a bore shelf facing a process pressure chamber;
- a metal header having a header shelf that contacts the bore shelf;
- a sensor in the process pressure chamber;
- a welded seal that seals the metal wall to the metal header;
- and
- electronics connected through the metal header to the sensor and providing an output representing the process pressure.
3 more elements
A pressure transmitter, comprising:
- a metal wall that separates a process pressure chamber from an electronics compartment, the metal wall having a stepped bore therethrough that includes a bore shelf facing the process pressure chamber;
- and
- a metal header having a stepped outer rim with a header shelf that contacts the bore shelf;
- and
- a welded seal that seals the stepped outer rim to the stepped bore.
2 more elements
Dependencies are inferred from the claim text.