PICO PCEM-005 Gas Analyzer

Overview :

PCEM-005 flue gas analyzer is a series of self-developed gas analysis products for online gas analysis of domestic as well foreign environmental protection and industrial control. Based on UV Differential Optical Absorption Spectroscopy (DOAS) technology and chemometrics algorithm (PLS), it is able to measure gas concentration of SO2, NO, NO2, O2, NH3, Cl2, O3, H2S, Ch, and etc. With features of high measurement accuracy, high reliability, fast response time, wide application scope, it can be widely applied in occasions of environment online monitoring, industrial process control, safety monitoring and etc. Depended on years of flue gas analyzer research experience and combined with practical experience of thousands of successful application cases, the analyzer has derived multiple types (standard type, low emission type, ultra-low emission type, and customized type) to meet different index requirements in different working condition.

Technical Principle :

PCEM-005 flue gas analyzer adopts UV DOAS technology. The optical technology platform consists of light source, gas chamber, optical fiber and spectrograph (including diaphragm, holographic grating, linear array detector) and other optical components. Please refer to figure 1, figure 2, and figure 3. Ultraviolet light emitted by light source enters gas chamber by optical window and absorbed by measured sample gas flowed through gas chamber. The light carrying sample absorption information will be gathered by lens and coupled into optical fiber and then transmits into spectrometer through fiber. After light splitting and photo-voltaic conversion, gas absorption spectrum is obtained. The corresponding component concentration in gas can be calculated by analyzing spectrum. 

Note: the difference among standard analyzer, low emission analyzer and ultra-low analyzer is the different optical path length of gas chamber: for standard analyzer, it adopts dual lens collimation system with 0.25m optical path; for low emission analyzer, it adopts multiple return structure with Im optical path; for ultra-low emission analyzer, it uses white cell structure with adjustable
optical path of 5-15m.