Gas probe for sampling gas molecules from a fluid and a system comprising the gas probe

US8627710B2 · kind B2 · utility

Assignee

• INFICON AB · SE

Inventors

• Claes Nylander · Linköping, SE
• Peter Hebo · Uppsala, SE
• Fredrik Enquist · Linköping, SE

Key dates

• Filing date: May 5, 2008
• Grant date: Jan 14, 2014
• Expiry date: Dec 16, 2029

Classification

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

Abstract

A gas probe for sampling gas molecules from a fluid. A housing includes an orifice and is adapted to be arranged in gas communication with a test gas sensor. The probe includes a stack of layers, whereby gas sample molecules have to pass through all layers of the stack in order reach the sensor. The stack includes at least a first membrane layer, a first spacer layer, a first filter layer and a second spacer layer. The housing includes an inlet for introducing blocking gas molecules into the second spacer layer and an outlet for discharging blocking gas molecules out of the first spacer layer. The gas probe is connectable to a control unit for controlling the blocking gas flow into the second spacer layer.