Hartmann & Braun Ag

Hartmann & Braun

Abb Patent Gmbh

Hartmann & Braun Gmbh & Co. Kg

Michael Zochbauer

Walter Fabinski

Michael Moede

V L Budovich

Andrezej M Rolski

F P Herrmann

Thomas Liedtke

Marek Rolski

Siegfried Vogt

Raig Kaufer

A photometer for measuring gas components. The photometer has an infrared radiator with radiator modulation, a measuring cell with a measurement and comparison chamber, and a detector which absorbs optopneumatically onto the gas component X, that is filled with gas component X. In order in the case of a photometer of this type to render it possible for a plurality of gas components to be measured with high accuracy and the smallest possible outlay in apparatus, at least one further detector is arranged downstream of the first detector. For the purpose of measuring the gas component Y the further detector is filled with its isotope Y*, and the first detector is optically transparent with regard to the further gas component Y* to be measured or the characteristic absorption bands thereof.

Photometer with non-dispersive infraded absorption spectroscopy (NDIR) for measuring several constituents

An electrodeless discharge lamp having a gas filling consisting of a gas mixture for generating gas-specific resonance radiation, wherein the lamp vessel is made of glass. To facilitate replacement and mounting of the electrodeless lamp, the discharge lamp is arranged within a metallic housing and the lamp vessel is disposed together with the high frequency coil as well as any electronic elements on a printed circuit board which is connected with the cover of the lamp housing.

Printed circuit board mounted electrodeless gas discharge lamp

A sealed gas discharge lamp is filed with a water vapor-enriched low pressure nitrogen oxygen mixture and a storage medium such as manganese dioxide is included in a separate vessel of the lamp for additionally storing water vapor but releasing the water vapor as the pressure in the lamp drops, the release may be augmented by heating the storage medium.

Gas discharge lamp having a water vapor enriched fill

Method for spectroscopy using two Fabry-Perot interference filters

The life of a low-pressure, hollow cathode lamp with an oxygen/nitrogen filling is extended by the inclusion of MnO.sub.2 which releases oxygen, thereby replenishing oxygen consumption in the lamp.

Low-pressure, hollow cathode lamp

An analyzer for measuring the combined NO and NO.sub.2 concentrations includes a hollow cathode lamp with nitrogen/oxygen filling emitting radiation which is alternatingly passed through two narrow-band interference filters, one having a transmission range clearly outside any NO absorption bands and its NO.sub.2 absorption equals the difference of the absorption coefficients for NO and NO.sub.2 in the transmission band of the other filter. These two beams pass through a measuring gas cell and are photoelectrically detected for further processing.

Photoelectric gas analyzer

Growing community of inventors

Oberursel, Germany

Michael Zochbauer