Gas measuring device and method with compensation of disturbances

US7231807B2 · kind B2 · utility

Assignee

• PARAGON AG · DE

Inventors

• Kurt Ingrisch · Reutlingen, DE
• Markus Niemann · Annweiler am Trifels, DE
• Gerald Hamm · Herrenberg, DE

Key dates

• Filing date: Nov 28, 2003
• Grant date: Jun 19, 2007
• Expiry date: Nov 28, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/122
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed is a gas measuring device which comprises compensation of disturbances and offers high accuracy of measurement immediately after being activated. Said gas measuring device is provided with a gas sensor (1) for generating a measuring signal (S1) that depends on the gas concentration and can have a spurious component while a high-pass filter (13) having an adjustable limiting frequency is mounted downstream of said gas sensor (1). The limiting frequency can be predefined according to the spurious component by means of a selection unit.