Pressure measuring device having a membrane edge and mounting element connected by a diffusion weld

US11745288B2 · kind B2 · utility

Assignee

• Endress+Hauser SE+Co. KG · DE

Inventors

• Andreas Rossberg · Bad Säckingen, DE
• Anh Tuan Tham · Berlin, DE
• Elke Schmidt · Bad Säckingen, DE
• Nils Ponath · Lörrach, DE
• Jonas Conradt · Berlin, DE
• Yanli Wang · Shanghai, CN
• Thomas Uehlin · Schopfheim, DE

Key dates

• Filing date: May 23, 2019
• Grant date: Sep 5, 2023
• Expiry date: Jun 8, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/403
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A pressure measuring device includes a ceramic pressure sensor including a ceramic measuring membrane and a sensor mounting configured to secure the pressure sensor such that a membrane region of the measuring membrane surrounded by a membrane edge is contactable with a medium having a pressure to be measured. The sensor mounting includes a titanium or titanium alloy mounting element including an opening through which the membrane region is contactable with the medium. The membrane edge is connected directly with the mounting element by a diffusion weld produced by a diffusion welding method.