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关 键 词：二氧化硫SO2检测管
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发布时间：2010-12-20
sulphur dioxide No.5DH SO2 Performance Measuring Range 10 to 600 ppm Sampling Hours 1 to 5 hours Detecting Limit 1 ppm (5 hours) Color Change Bluish purple → White Reaction Principle SO2 + I2 +H2O → 2HI + H2SO4 Coefficient of Variation 10% (for 50 to 600 ppmr) Shelf Life 3 Year Corrections for temperature & humidity Temperature correction is necessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences (NOTE) Substance Concentration Interference Change color by itself Nitrogen dioxide - No Hydrogen sulphide + White Calibration gas generation Diffusion tube method TLV-TWA TLV-STEL Explosive range 2 ppm 5 ppm -
