PORTABLE SYNGAS ANALYZER IR-GAS-600P
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2 Abstract
IR-GAS-600P is based on NDIR technology to measure the gas concentration of CO, CO2, CH4 and
CnHm(optional), based on TCD to measure he gas concentration of H2, and based on ECD to measure the gas
concentration of O2 at the same time in one analyzer. The BTU calculation is available in IR-GAS-600P.
2.1 NDIR principle
CO, CO2, CH4, C3H8 and other molecules by heterogeneous atoms in the infrared wavelength region with
the absorption spectrum, its absorption intensity follows Lambert - Beer's Law. When corresponding to a
characteristic absorption wavelength of the light waves of gas through the gas is measured, its intensity will be
significantly weakened, the intensity of the gas concentrations in the degree of attenuation related to the
relationship between compliance with Lambert - Beer law. The basic principle of NDIR sensor structure, shown
below,
The basic mathematical model is as follows: most of the organic and inorganic multi-atomic and molecular
gases in the infrared region have a specific absorption wavelength. When the infrared light passes through, these
gas molecules through the specific wavelengths of light intensity by the Lambert - Beer law, said: I = I0e-kpl,
absorption of light intensity i can be expressed as: i=I0-I= I0 (1- e-kpl). Where, I0 is the incident light strong; I is
through the light intensity; l is the thickness of the gas medium, p is the gas density, k is the absorption
coefficient.
2.2 Features and Applications
This product is applicable to iron and steel, ferro alloys, sponge iron smelting process gas analysis (including
blast furnace, BOF, coke oven, heat treatment, gas furnace, calcium carbide furnaces), cement shaft kiln flue gas
composition measurements (flue gas oxygen content, air excess coefficient of determination), straw biomass
gasification process gas analysis (gas concentrations, heat value of monitoring), gas recovery and utilization of
the heat value of the process of monitoring, industrial gas applications in the process of environmental
protection.