Abstract: A radiation emission component for the temperature-compensated optical detection of an oxygen content of a fluid, wherein the radiation emission component includes a contact surface wettable by the fluid, and a coupling surface different from the contact surface, wherein the radiation emission component has a luminophore-containing region, wherein the luminophore is reachable by oxygen in a first portion of the contact surface for the quenching thereof, wherein the radiation emission component has a temperature detection region arranged offset along the contact surface relative to the luminophore-containing region, and wherein the radiation emission component has, in the temperature detection region, a main body having a cutout extending toward the contact surface, wherein the cutout is covered by a base having a base layer body, wherein a surface of the base layer body facing away from the cutout forms a second portion of the contact surface; wherein the main body and the base layer body each to include plas

Abstract: A fully automatic coffee machine (1) including a detachable water tank (5) that is retained by a magnetic holding force on a base device (2) of the fully automatic coffee machine (1).

Abstract: A water container for a beverage machine, in particular a fully automatic coffee machine, as well as a beverage machine comprising such a water container are specified. With the goal of also ensuring the fillability of the water container when attached to the beverage machine and of improving the manageability of the water container, which may be removable from the beverage machine, the water container may have a filling opening, which can be covered by means of a lid, wherein, when the water container is attached to the beverage machine, a filling area is defined above the filling opening, and wherein the lid can be guided by means of a guide device, which provides for a pivoting of the lid out of the filling area into at least one predetermined or predeterminable open position, so that the filing area can be accessed freely at least from the top.