Sensor having a sensor element arranged in a housing

US5505073A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Josef Gerblinger · Wertingen, DE
• Uwe Lampe · Buxtehude, DE
• Hans Meixner · Haar, DE

Key dates

• Filing date: Jul 22, 1994
• Grant date: Apr 9, 1996
• Expiry date: Jul 22, 2014

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/0009
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor assembly for sensing gaseous or fluid medium such as sensing oxygen within exhaust gas of an automobile. The assembly provides a sensor element within a housing mounted within a S-shaped flow channel between a medium entry aperture and exit aperture. A shield is provided upstream of the sensor in a flow direction of the medium. The arrangements provide for a laminar flow across the sensor element causing reduced deposits on the surface of the sensing element for a more accurate sensor and a longer service life of the sensor element.