Channel and fuel cell system

Abstract

The invention relates to a sensor (4a) for determining a hydrogen concentration in a channel (3a) of a fuel cell system (2), comprising a sensor housing (6), a measuring chamber, wherein the measuring chamber is arranged in the sensor housing (6), and a measuring chamber channel, wherein the measuring chamber channel fluidically connects the measuring chamber to the environment of the sensor (4a), wherein the sensor (4a) can be mounted such that the measuring chamber membrane is located in the channel (3a). The invention further relates to a channel (3a) with such a sensor (4a) and a fuel cell system (2) with such a channel (3a).

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