Abstract: A measuring cuvette (1), for the spectroscopic analysis of a gas sample in a ray path between a radiation source and a detector, preferably suitable for use in a gas-measuring device (19), has a vessel wall (2) that at least partially encloses a sample space (3) for receiving a process gas. At least one window element (4), through which electromagnetic radiation can be coupled into the sample space (3) from the outside, is indirectly or directly connected with the vessel wall (2). An inlet as well as an outlet (5) are included, through which the process gas can be introduced into the sample space (3) and can be removed from the sample space (3). At least one fastening element (6) makes possible both secure fastening of the window element (4) on the vessel wall (2) and separation of the window element (4) from the vessel wall (2) without destruction.

Abstract: A measuring cuvette (1), for the spectroscopic analysis of a gas sample in a ray path between a radiation source and a detector, preferably suitable for use in a gas-measuring device (19), has a vessel wall (2) that at least partially encloses a sample space (3) for receiving a process gas. At least one window element (4), through which electromagnetic radiation can be coupled into the sample space (3) from the outside, is indirectly or directly connected with the vessel wall (2). An inlet as well as an outlet (5) are included, through which the process gas can be introduced into the sample space (3) and can be removed from the sample space (3). At least one fastening element (6) makes possible both secure fastening of the window element (4) on the vessel wall (2) and separation of the window element (4) from the vessel wall (2) without destruction.

Abstract: A first, upper slotted disk (10) and a second, lower slotted disk (20) are arranged as a gas inlet (11) in a gas-measuring device (1). The first, upper slotted disk (10) and the second, lower slotted disk (20) are connected to one another and to a sensor housing (2) via a spacer element (29). The arrangement of the slotted disks (10, 20) in relation to one another is selected to be such that reduced propagation of light of an infrared radiation source (43) through both slotted disks (10, 20) into the measuring environment is achieved.

Abstract: A gas sensor with a housing (1, 11) has an optical signal transmission to the environment of the gas sensor (10). At least one light-emitting diode (3) is arranged in the housing (1, 11) on the inner side of a disk (4) that is transparent to light. At least one optical light guide (5), for coupling in the light of the light-emitting diode (3), is arranged in the housing (1, 11) on the outer side of the disk (4) that is transparent to light. The optical light guide (5) extends up to the outer surface (6) of the housing (1, 11).

Abstract: A first, upper slotted disk (10) and a second, lower slotted disk (20) are arranged as a gas inlet (11) in a gas-measuring device (1). The first, upper slotted disk (10) and the second, lower slotted disk (20) are connected to one another and to a sensor housing (2) via a spacer element (29). The arrangement of the slotted disks (10, 20) in relation to one another is selected to be such that reduced propagation of light of an infrared radiation source (43) through both slotted disks (10, 20) into the measuring environment is achieved.

Abstract: A gas sensor with a housing (1, 11) has an optical signal transmission to the environment of the gas sensor (10). At least one light-emitting diode (3) is arranged in the housing (1, 11) on the inner side of a disk (4) that is transparent to light. At least one optical light guide (5), for coupling in the light of the light-emitting diode (3), is arranged in the housing (1, 11) on the outer side of the disk (4) that is transparent to light. The optical light guide (5) extends up to the outer surface (6) of the housing (1, 11).