Measuring apparatus for determining a pressure difference

US8499640B2 · kind B2 · utility

Assignee

• ENDRESS+HAUSER GMBH+CO.KG · DE

Inventors

• Marc Schlachter · Wehr, DE
• Andreas Spitz · Schopfheim, DE
• Roland Dieterle · St. Georgen, DE

Key dates

• Filing date: Nov 20, 2009
• Grant date: Aug 6, 2013
• Expiry date: Jul 10, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L19/086
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measuring apparatus for outputting a measurement signal representing the difference between a first pressure and a second pressure. The apparatus includes a first pressure measuring transducer module for outputting a sequence of first signals representing the first pressure; a second pressure measuring transducer module for producing a sequence of second signals representing the second pressure; an evaluation module for ascertaining a sequence of difference values between the two pressure values and for outputting a sequence of fourth signals, which, in each case, represent the pressure difference; a first cable connection between the first and second pressure measuring transducer module; and a second cable connection between the second pressure measuring transducer module and the evaluation module. The modules are separated spatially from one another. The second pressure measuring transducer module has a mapping unit, which is provided for receiving the sequences of first and second signals, and for outputting to the evaluation module via the second cable connection a sequence of third signals, which, in each case, contain the pressure values.