A respiratory air measuring device is provided through which a measuring air stream flows for measuring at least one component of the respiratory air of a patient. The respiratory air measuring device includes a sensor device and a flow generator disposed downstream for generating a measuring air stream. A flow nozzle is disposed in a channel portion to affect flow, wherein a generator air stream coming from the flow nozzle creates the measuring air stream. The respiratory air measuring device may be partially disassembled for effective cleaning.
