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Model 931S Single-Gas UV Analyzer Model 932S Multi-Gas UV Analyzer Model 933 UV Analyzer Method Dual wavelength, high resolution, non-dispersive UV analysis. Multi-wavelength, high resolution, non-dispersive UV analysis. Non-dispersive UV analysis for measurement of H2S, carbonyl sulfide (COS), and methyl mercaptan (MeSH) in pipeline quality natural gas.   Frontal elution chromatography is used to remove interfering species from the sample gas. Range Measuring Cell H2S :  Range @ 228 nm -  30 % H2S / (Cell length), minimum 200 PPM to maximum 100 % H2S :  Range @ 214 nm - 30 % H2S / (Cell length), minimum 50 PPM and maximum 75 %. SO2 :   Range -  15 % SO2 / (Cell length),  minimum of 100 PPM SO2  : Range -  20 % SO2 / (Cell length),  minimum  100 PPM NO:  Range -6 % NO / (Cell length),...

Check this website for original post and more info :                                           https://www.youtube.com/user/EnventEng/videos

Check this website for original post and more info : https://www.youtube.com/user/EnventEng/videos