The measurement environment for smoke is generally very demanding. *Many sulfur-containing flue gases have very high temperatures and humidity levels, and sulfur-containing flue gases are easily dissolved in water vapor, resulting in smaller measurement data. A comprehensive solution has been proposed for the flue gas analyzer in this regard. Portable flue gas analyzer has become an energy-saving and environmental protection equipment, specially designed for the needs of environmental protection and industrial fields, suitable for accurate monitoring of various flue gas components from heavy pollution sources.
Portable smoke analyzerSuitable for various industrial gas furnaces or chimneys; Environmental protection industry; engine; Boiler monitoring; Energy monitoring functional department; Metallurgical industry; Thermal power industry; Building materials silicate industry; Energy conservation supervision in petrochemical industry. Used to measure various combustion parameters in flue gas, it is an ideal equipment for boiler tuning, optimizing combustion efficiency, saving energy, and controlling emissions.
The analysis principle of a portable flue gas analyzer is a solution containing different elemental components, with compounds of different colors and selective absorption spectra for light of different wavelengths. Therefore, according to Lambert Beer's law, the element content can be determined by detecting the absorbance of a specific element solution at a specific wavelength. Different materials, elements, and analysis methods require different wavelengths, so to meet the needs of various industries for detecting and analyzing multiple elements in different materials, it is necessary to be able to conveniently set different wavelengths. This product meets this need.
At the same time as adopting a right exit self aligning diffraction grating adjustable wavelength optical system, a curved colorimetric cup was developed to significantly reduce the interference of ambient light on analysis and detection, achieving the design goal of both freely setting the detection wavelength and facilitating user analysis and operation.
Principle of Portable Smoke Analyzer
There are two commonly used working principles for portable flue gas analyzers: electrochemical working principle and infrared working principle. At present, portable flue gas analyzers on the market usually combine these two principles. Electrochemical flue gas analyzers generally include Fiso, MRU, and Detu from Germany, while domestically produced ones include Tianhong and Laoying. Infrared flue gas analyzer manufacturers generally include MRU and Siemens from Germany. The following is an introduction to the working principles of these two types of flue gas analyzers:
Working principle of electrochemical gas sensor: After dust removal and dehumidification, the gas to be measured enters the sensor chamber, passes through the permeable membrane into the electrolytic cell, and the gas diffused and absorbed in the electrolyte undergoes potential electrolysis at a specified oxidation potential. The concentration of the gas is calculated based on the consumed electrolysis current.
Install the working electrode, counter electrode, and reference electrode in a cylindrical tank made of plastic, fill the electrolyte between the electrodes, and seal the top with a membrane made of porous tetrafluoroethylene. The connection between the preamplifier and the sensor electrode applies a certain potential between the electrodes to keep the sensor in working condition. The working electrode of gas in the electrolyte undergoes oxidation or reduction reactions, and when the electrode undergoes reduction or oxidation reactions, the equilibrium potential of the electrode changes, and the change value is proportional to the gas concentration. It can measure gases such as SO2, NO, NO2, CO, H2S, etc., but the sensitivity of these gas sensors varies. The order of sensitivity from high to low is H2S, NO, NO2, SO2, CO, and the response time is generally a few seconds to tens of seconds, usually less than 1 minute; Their lifespan ranges from as short as six months to as long as 2 or 3 years, while some CO sensors can last for several years.
Working principle of infrared sensor: Using the principle that different gases have special absorption characteristics for electromagnetic wave energy at infrared wavelengths to analyze gas composition and content.
Infrared radiation generally refers to electromagnetic radiation with wavelengths ranging from 0.76 μ m to 1000 μ m. The actual infrared wavelength used in infrared gas analysis instruments is approximately 1-50 μ m.
