• New CEMS Monitor

Air Monitoring

New CEMS Monitor

Jan 01 2000

MIR 9000 from Environnement S.A (France) is a multicomponent NonDispersive InfraRed (ND IR) analyzer using Gas Filter Correlation technique (GFC). GFC is a wellestablished method to reduce cross sensitivities to gases that cause interference in infrared measurements. In the technique an optical band pass filter is used to select an infrared band and then a cell filled with the gas of interest is placed in the beam, effectively blocking the spectral lines that the gas absorbs at. It is important to note that variations in optical clarity like dirt on cell windows, source strength, and other causes not related to the spectral lines selected, will have no effect on the ratio of two pulses, making GFC an extremely sensitive and selective analytical technique.

MIR 9000 uses a 16position rotating correlation wheel, on which both interferential filters and gas cells are mounted, thus allowing multiple gases to be simultaneously measured.

As an option, MIR 9000 can now be delivered with a builtin chemiluminescence module for low NOx measurement (lowest full scale : 020 mg/Nm3).

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AET 28.2 April/May 2024

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