Abstract: A sensor for determining a hydrogen concentration in a channel of a fuel cell system, having a sensor housing, a measuring chamber, wherein the measuring chamber is arranged in the sensor housing, and a measuring chamber channel, wherein the measuring chamber channel fluidically connects the measuring chamber to the environment of the sensor, wherein the sensor can be mounted in such a way that the measuring chamber diaphragm is located in the channel. A channel having a sensor of this type and a fuel cell system having a channel of said type.

Abstract: An air mass flowmeter with a housing having an air-guiding path in which an air mass sensor element is arranged on a sensor element carrier in the housing and is electrically connected to a circuit carrier by connection wires. The circuit carrier is also arranged in the housing the air mass sensor element is positioned accurately in the air-guiding path by a positioning element that engages into a positioning element receptacle formed in the sensor element carrier.

Abstract: An air mass flowmeter with a housing having an air-guiding path in which an air mass sensor element is arranged on a sensor element carrier in the housing and is electrically connected to a circuit carrier by connection wires. The circuit carrier is also arranged in the housing the air mass sensor element is positioned accurately in the air-guiding path by a positioning element that engages into a positioning element receptacle formed in the sensor element carrier.

Abstract: An air mass flow meter, includes a housing made of plastic having an electrically insulating effect. A flow channel is formed in the housing. The air mass flow motion also includes a sensor element which is arranged in the housing and detects the air mass flowing in the flow channel. Conductive paths are arranged in the housing and connect the sensor element to connection pins. In order to provide a mass air flow meter which is cost-effective to produce and allows precise measurement of a mass air flow, the entire housing is made of plastic and at least one part of the flow channel has electrostatically dissipative properties.

Abstract: An air mass flow meter, includes a housing made of plastic having an electrically insulating effect. A flow channel is formed in the housing. The air mass flow motion also includes a sensor element which is arranged in the housing and detects the air mass flowing in the flow channel. Conductive paths are arranged in the housing and connect the sensor element to connection pins. In order to provide a mass air flow meter which is cost-effective to produce and allows precise measurement of a mass air flow, the entire housing is made of plastic and at least one part of the flow channel has electrostatically dissipative properties.