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硫化氫檢測管4D

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    • 硫化氫檢測管4D H2S Hydrogen sulphide，Measuring Range 0.2 to 200 ppm Sampling Hours 1 to 48 hours Detecting Limit 0.2 ppm (10 hours) Color Change硫化氫檢測管價格 硫化氫檢測管4D H2S Hydrogen sulphide的詳細介紹 硫化氫檢測管4D H2S Hydrogen sulphide Hydrogen sulphide No.4D H2S Performance Measuring Range 0.2 to 200 ppm Sampling Hours 1 to 48 hours Detecting Limit 0.2 ppm (10hours) Color Change White→ Brown Reaction Principle H2S + Pb(CH3COO)2 → PbS +2CH3COOH Coefficient ofVariation 10%(for 10 to 200 ppm-hr) ShelfLife 3 Year Correctionsfor temperature & humidity Unnecessary Store the tubes atcool and dark place. Possible coexisting substances and theirinterferences (NOTE) Substance Concentration Interference Change color by itself Nitrogendioxide 5 ppm - No Ammonia 25 ppm No No Chlorine 1 ppm No No sulphur dioxide 5 ppm No No Calibration gasgeneration Diffusion tubemethod TLV-TWA TLV-STEL Explosive range 10 ppm 15 ppm 4.0to 44%

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