Resistance temperature sensor

US8777484B2 · kind B2 · utility

Assignee

• ENDRESS+HAUSER WETZER GMBH+CO. KG · DE

Inventors

• Peter Seefeld · Bad Wimpfen, DE
• Reinhard Buchner · Nesselwang, DE

Key dates

• Filing date: Jun 23, 2011
• Grant date: Jul 15, 2014
• Expiry date: Feb 23, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01K5/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A resistance temperature sensor with a first temperature sensor element and a second temperature sensor element, wherein the first temperature sensor element comprises a first measuring path and the second temperature sensor element a second measuring path, wherein the first and the second measuring paths extend on a substrate, wherein the substrate has an anisotropic thermal expansion with at least two mutually differing expansion directions (a, c), and wherein a projection of the first measuring path on the expansion directions (a) differs from a projection of the second measuring path on the expansion directions (c).