Abstract: A device for gassing a liquid, including a rotor, which is driven to rotate and has multiple vanes for conveying the liquid, and a stator, which surrounds the rotor and has a plurality of flow channels, which each extends starting from a radially inner inlet opening adjacent to the rotor through the stator to a radially outer outlet opening and are delimited along their length by side walls, bottom surfaces, and top surfaces and can be acted on with liquid by the rotor in the region of the inlet opening, wherein between the inlet opening and the outlet opening, the side walls and/or bottom and top surfaces of the flow channels have a multitude of gassing openings, which can be acted on with compressed gas from a compressed gas source in order to introduce this gas into the flow channels. A corresponding method for gassing a liquid is also disclosed.

Abstract: The invention relates to a probe for measuring volatile components in an aqueous solution, for example to determine the alcohol concentration of an aqueous solution, with a probe body with a continuous lumen and a membrane disposed transversely with respect to the lumen, which isolates the lumen from the outside, and with a semiconductor gas sensor disposed in a housing inside the lumen at a distance from the membrane forming a measuring chamber filled with air, said sensor responding to the gases permeating the membrane by changing its electrical resistance, with an open continuous pressure relief channel being provided for the outflow of the gases permeating into the measuring chamber on the side of the sensor and the measuring chamber facing away from the membrane, and the pressure relief channel being connected at one end through an opening to the measuring chamber and at the other end on the outlet side having an outlet opening of a size such that the volume flow of the gas permeating through the membran