Mettler-toledo Gmbh

Endress+hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh+co. Kg

Martin Hertel

Francesca Venturini

Andreas Müller

Hakon Mikkelsen

Pär Wilhelm Bergstroem

Martin Tazreiter

Pär Bergström

Ralph Kondziella

Pär BERGSTRÖM

A gas cell () for the spectroscopic, in particular absorption spectroscopic, analysis of a gas, in which the gas is exposed to an incident beam of rays (S) of electromagnetic radiation and a beam of rays (S) of electromagnetic radiation exiting the gas is detected to form a measurement signal, wherein the gas cell () comprises a body () formed by a porous, electromagnetic radiation-scattering material, an in-coupling device () for coupling the incident beam of rays (S) into the gas cell () and an out-coupling device () for coupling the exiting beam of rays (S) out of the gas cell (), wherein, according to the invention, the gas cell is further developed according to the invention by forming a material-free cavity () in the body (), which is surrounded by an inner surface () running within the material and is both diffusely reflecting and transmitting the electromagnetic radiation.

Gas cell

A gas measurement system as disclosed can include a coherent light source, which emits a light beam; a detector; a beam path formed between the light source) and the detector; and a gas cell arranged in the beam path such that the detector receives light transmitted through the gas cell. The gas cell can include a porous ceramic and have an optical path length which is a multiple of the actual layer thickness of the gas cell. A optical element can be arranged in the beam path between the light source and the gas cell with the light beam emitted by the light being widened and unfocussed as the light beam enters the gas cell.

Gas measurement system

An optical subassembly for in- and/or out-coupling of electromagnetic radiation of a predetermined wavelength, especially IR-radiation, into, and/or out of, a pressure-tight housing. The subassembly includes at least one housing wall section of the pressure-tight housing having at least one opening, wherein, in the opening, mechanical setting means are provided, with which a plug transparent for the electromagnetic radiation is set, wherein the transparent plug has two mutually oppositely lying, base surfaces and a cylindrical lateral surface, and wherein the setting means include as least one setting ring, characterized in the a volume region between at least a first section of the setting ring and at least a section of the cylindrical lateral surface is filled with a pressure-tight, potting compound.

Optical subassembly for in-and/or out-coupling of electromagnetic radiation into, and/or out of, a pressure-tight housing

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Steinen, Germany

Martin Hertel