公开(公告)号：US20240426688A1

公开(公告)日：2024-12-26

申请号：US18338794

申请日：2023-06-21

Applicant: Rosemount Inc.

Inventor： Christopher L. ERIKSEN

IPC: G01L9/00 ,  G01L13/02

Abstract: A process fluid pressure transmitter includes a pressure sensor body containing a pressure sensor that has an electrical characteristic that changes in response to applied pressure. An isolation diaphragm is configured to be exposed to process fluid. A fill fluid fluidically couples the isolation diaphragm to the pressure sensor. A weld ring is welded to the isolation diaphragm at a first weld. A barrier metal is disposed on at least one surface of the isolation diaphragm such that the barrier metal extends over the first weld. The weld ring is welded to the pressure sensor body at a second weld that is spaced from the barrier metal.