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简单介绍：
氯乙烯检测管131LB Vinyl chloride，可检测的气体包括二氧化碳、氧气、氢气、臭氧、一氧化氮、氯乙烯、肼、二氧化氯、甲烷、乙烷、一氧化碳、氨气、氯气、二氧化氮、二氧化硫、氟化氢、硫化氢、氯化氢、砷化氢、光气、磷化氢、氰化氢、甲苯等几十种
详情介绍：
氯乙烯检测管131LB Vinyl chloride
Vinylchloride No.131LB
CH2:CHCl
| Performance |
Measuring Range | 0.25 to 1 ppm | 1 to 20 ppm | 20 to 70 ppm |
Number of Pump Strokes | 4 | 2 | 1 |
Correction Factor | 1/4 | 1 | 3.5 |
Sampling Time | 1.5 minutes per pumpstroke | ||
Detecting Limit | 0.05 ppm (n=4) | ||
Color Change | Yellow →Purple | ||
Reaction Principle | CH2:CHCl + PbO2 +H2SO4 →HCl | ||
| Coefficient ofVariation | 10% (for1 to 5 ppm), 5% (for 5 to 20 ppm) | ||
| ShelfLife | 2Years | ||
| Correctionsfor temperature & humidity | Temperature correction is necessary | ||
| Store the tubes inthe refrigerator to keep at 10oC (50oF) orbelow. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Chlorine, Hydrogenchloride | 1/10time | Plus error | Produce purple stain |
Alcohols, Esters,Ketones | - | No effect | Nodiscoloration |
1,2-Dichloroethylene | 1/10time | Plus error | Produce purplestain |
Trichloroethylene, | 1/10time | Plus error | Produce purplestain |
| Aromatic hydrocarbons | - | No effect | Nodiscoloration |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 1ppm | - | 3.6to 23% |