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Bruker Optics offers a broad portfolio of FTIR-based remote sensing systems for identification and quantification of gases, even from far distances
Open Path Air Monitoring System
The system is based on the method of Fourier-transform infrared spectroscopy (FTIR). Infrared radiation is modulated by an interferometer and transmitted to an array of retroreflectors positioned at a distance of typically several hundred meters using a telescope. The reflected radiation is received by the same telescope and focused onto a detector.
The large spectral range allows identification and quantification of a wide range of compounds. An important application of the system is air monitoring at industrial, construction or municipal sites. In addition, the OPS allows high-precision quantification of atmospheric gases.
The environmental monitoring system EM27 is an open path Fourier Transform infrared (FTIR) spectrometer, designed and optimized for remote sensing of chemical substances in the atmosphere. With its high sensitivity, mechanical stability and speed the system is ideally suited for a wide range of applications, from industrial air quality monitoring to academic research in the field.
With its proven Bruker RockSolidTM interferometer and the novel design of its sensor module the system is resistant to mechanical shocks and vibrations enabling a long-term alignment of the system under varying temperature conditions. An internal calibration source provides automated radiometric calibration. The system is hardened for field operations in harsh environments and is capable of real-time measurements and analysis on site.
In order to cover as many application scenarios as possible, the EM27 can be operated in two different configurations with different sensitivities: The passive mode measures the natural infrared signature of the gas compounds while in the active mode the transmitted light of an artificial infrared light source is measured.
The new EM27/SUN Series spectrometers represent FTIR Remote Sensing analyzers dedicated for atmospheric measurements. They quantify gases such as carbon dioxide and methane in the atmosphere by analyzing the radiation of the sun utilizing the CAMTracker system. This is an innovative camera-based feedback system following the sun as light source.
The EM27/SUN Series spectrometers provide a very compact and robust design, relatively low weight, and an intuitive user interface. They are highly portable and hence ideally suited for long term measurement campaigns in remote areas with little infrastructure.
SIGIS 2 with anti-shock mount
SIGIS 2 allows identification, quantification, and visualization of potentially hazardous gas clouds from long distances. SIGIS 2 (Scanning Infrared Gas Imaging System) is a scanning imaging remote sensing system based on the combination of an infrared spectrometer with a single detector element and a scanner system.
The image of the scene is displayed by a camera (video or infrared). In the basic mode of operation the operator chooses an area to examine by drawing a frame in the video image. Then the scanning mirror sequentially scans the scene and the incoming infrared radiation is analyzed in real time. The results are visualized by the video image, overlaid by an image of the potentially hazardous gas cloud. This direct display of the cloud image in the video image allows simple assessment of the position and the size of the cloud. The combination of a rotating head with a scanning mirror allows 360°-observation and imaging.
Imaging Remote Sensing System
The Bruker Hyperspectral Imaging System HI 90 is an imaging remote sensing system based on the combination of a Michelson interferometer and a focal plane array detector. Each pixel of the array records an interferogram from the corresponding field of view. A spectrum is obtained by fourier transformation and contains the infrared signature of the scene. The system allows identification, quantification and visualization of potentially hazardous gases from long distances.
A major field of applications of the HI 90 is homeland security. If hazardous compounds are released into the atmosphere, for example in the case of a terrorist attack or a chemical accident, emergency response forces require information about the released compounds immediately in order to take appropriate measures to protect workers, residents, and the environment. HI 90 allows identification and visualization of such hazardous clouds in the atmosphere from long distances of several kilometers (stand-off detection). The image of a cloud allows an assessment of the dimensions and the dispersion of a cloud. In addition, the source of a cloud may be located.
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