Ceramic pressure measurement cell having at least one temperature transducer and pressure sensor having a pressure measurement cell of this type

US10883892B2 · kind B2 · utility

Assignee

• Endress+Hauser SE+Co. KG · DE

Inventors

• Andreas Rossberg · Bad Säckingen, DE
• Nils Ponath · Lörrach, DE
• Jan Schleiferböck · Sluis 3, DE
• Thomas Uehlin · Schopfheim, DE

Key dates

• Filing date: Nov 15, 2016
• Grant date: Jan 5, 2021
• Expiry date: May 24, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L19/04
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A pressure measurement cell comprises: a ceramic counter body; a ceramic measuring diaphragm which is joined in a pressure-tight manner with the counter body, creating a measurement chamber between the counter body and the measuring diaphragm, by means of a circumferential joint. The measuring diaphragm can be deformed by a pressure to be measured; an electrical converter for converting a pressure-dependent deformation of the measuring diaphragm into an electrical signal; and a temperature transducer for providing at least one electrical signal dependent on a temperature or on a temperature gradient of the pressure measurement cell. The temperature transducer comprises at least one first thermocouple having a galvanic contact between a first conductor with an electrically conductive material and a second conductor with at least one second electrically conductive material.