Abstract: The present invention relates to gas sensor housing (1), comprising: a gas sensor (3) held by a housing body (11) below a primary gas permeable membrane (2); at least one connector element (10) molded into the housing body (11) such that the respective ends thereof enable connectivity to the gas sensor (3) such that signals may be carried from the gas sensor (3) to the connector element (10); a sensor envelope (9) providing an enclosure for the housing body (11); means for retaining the primary gas permeable membrane (2) in place above the gas sensor (3); a spacer section (7) providing a separation distance (X) between the gas sensor (3) and the primary gas permeable membrane (2).

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.

Abstract: The present invention relates to gas sensor housing (1), comprising: a gas sensor (3) held by a housing body (11) below a primary gas permeable membrane (2); at least one connector element (10) moulded into the housing body (11) such that the respective ends thereof enable connectivity to the gas sensor (3) such that signals may be carried from the gas sensor (3) to the connector element (10); a sensor envelope (9) providing an enclosure for the housing body (11); means for retaining the primary gas permeable membrane (2) in place above the gas sensor (3); a spacer section (7) providing a separation distance (X) between the gas sensor (3) and the primary gas permeable membrane (2).

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.

Abstract: The present invention relates to a method at detection of presence of hydrogen gas and measurement of content of hydrogen gas. The detection is performed by means of a hydrogen gas sensitive semiconductor sensor, whose output signal is used for determination of the content of hydrogen gas in the gas sample. The semiconductor sensor is exposed to the gas sample during a detection interval, which is preceded by a time interval during which the semiconductor sensor is exposed to a surrounding gas atmosphere. The invention is characterized in that the gas atmosphere contains a negligible amount of oxygen and carbon monoxide compared to the gas sample and that the time interval is many times longer than the detection interval.

Abstract: The present invention relates to a method at detection of presence of hydrogen gas and measurement of content of hydrogen gas. The detection is performed by means of a hydrogen gas sensitive semiconductor sensor, whose output signal is used for determination of the content of hydrogen gas in the gas sample. The semiconductor sensor is exposed to the gas sample during a detection interval, which is preceded by a time-interval of preconditioning treatment during which the semiconductor sensor is exposed to a surrounding gas atmosphere. The invention is characterized in that the gas atmosphere contains a negligible amount of oxygen, hydrogen and carbon monoxide compared to the gas sample and that the time interval is many times longer than the detection interval.