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1,1-二氯乙烯检测管130L Vinylidene chloride，气体检测管有一氧化碳、硫化氢、氨、甲醛、苯 、苯系物中苯 、甲苯 、二甲苯 、二氧化硫、氮氧化物、汽油 、液化石油汽 、氯气 、氯化氢、二氧化碳、磷化氢、二硫化碳、臭氧 、氟化氢 、甲醇 、乙醇 www.yd17.cn
详情介绍：
1,1-二氯乙烯检测管130L
Vinylidene chloride No.130L
CH2:CCl2
| Performance |
MeasuringRange | 0.4 to 1 ppm | 1 to 14 ppm | 14 to 40.6 ppm |
Number of Pump Strokes | 2 | 1 | 1/2 |
CorrectionFactor | 0.4 | 1 | 2.9 |
SamplingTime | 1 minute per pumpstroke | ||
DetectingLimit | 0.1 ppm (n=2) | ||
ColorChange | Yellow → Reddishbrown | ||
ReactionPrinciple | CH2:CCl2 + Cr6++ H2SO4 →HCl | ||
| Coefficient ofVariation | 10% (for1 to 4 ppm), 5% (for 4 to 14 ppm) | ||
| ShelfLife | 2Years | ||
| Correctionsfor temperature & humidity | Unnecessary | ||
| Store the tubes inthe refrigerator to keep at 10oC (50oF) orbelow. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Ethylene | 300ppm | Minus error | Nodiscoloration |
Vinyl chloride | 1/7 time | Plus error | Produce reddishbrown |
Tetrachloroethylene | 4 times | Plus error | Produce reddishbrown |
Trichloroethylene | 1time | Plus error | Produce reddishbrown |
Toluene | 500 ppm | Minus error | Nodiscoloration |
Benzene | 400 ppm | Minus error | Nodiscoloration |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 5ppm | - | 5.6 to11.4% |