FT-IR spectroradiometer OP-MR

rugged

The OP-MR high resolution atmospheric transmission spectrum provides a finely resolved definition of the chemical species absorption fingerprint and thus a precise measurement of the chemical species concentration. The wide spectral range coverage of FTIR (1.5—13.5 µm) allows the measurement of a large range of chemical species simultaneously. The instrument can provide a full atmospheric transmission spectrum within a fraction of a second Characteristics The ABB open path spectrometer is configured from the MR Series product line Field rugged setup as a mobile system High linear response of photovoltaic MCT detector For improved chemometric model prediction and precise gas concentration measurements Real time display of gases concentration Open path length up to 500 m Limit of CO2 detection < 10 ppb The instrument is configured for monostatic monitoring; which consist in generating an infrared signal from the interferometer, send this signal to the retro-reflector to be reflected back to the FTIR and collected by a MCT detector. The air path between the instrument and reflector is absorbing part of the infrared signal and provides the atmospheric transmission signature. The silicon carbide (SiC) globar emitted light is modulated by the FTIR before being sent to the retroreflector and collected by the MCT detector after travelling back and forth between the FTIR sensor and retroreflector, thus the only AC signal detected is the IR source modulated energy