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乙烯气体检测管172L
点击次数：183发布时间：2012/3/20 11:25:42
更新日期：2014/4/30 16:30:01
所 在 地：其它
产品型号：172L
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详细内容
简单介绍
乙烯气体检测管172L Ethylene，Measuring Range 0.2 to 50 ppm Number of Pump Strokes 4 Correction Factor 1 Sampling Time 2 minutes per pump stroke Detecting Limit 0.05 ppm （n=4） Color乙烯气体检测管172L Ethylene
乙烯气体检测管172L Ethylene
的详细介绍乙烯气体检测管172L Ethylene
Ethylene No.172L
CH2:CH2
| Performance |
| Measuring Range | 0.2 to 50 ppm |
| Number of PumpStrokes | 4 |
| Correction Factor | 1 |
| Sampling Time | 2 minutes per pumpstroke |
| Detecting Limit | 0.05 ppm （n=4） |
| Color Change | Pale yellow →Blue |
| Reaction Principle | CH2:CH2 + （NH4）2MoO4 + PbSO4O → Molybdenum blue |
| Coefficient ofVariation | 10% （for 0.2 to 10ppm）, 5% （for 10 to 50 ppm） |
| ShelfLife | 3 Years |
| Correctionsfor temperature & humidity | Unnecessary |
| Store the tubes at cool ａnd darkplace. | |
| Possible coexisting substances ａnd theirinterferences | （NOTE） |
| Substance | Concentration | Interference | Change color by itself |
| Ammonia, Hydrogencyanide | - | Plus error | Discolor towhite |
| Carbon monoxide,Hydrogen | - | Plus error | Discolor to blue forwhole layer |
| Hydrogenchloride | - | Plus error | Discolors topink |
| Hydrogensulfide | - | Plus error | Discolors toblack |
| Butadiene | - | Plus error | Discolors towhite |
| Butane,Pentane | - | Plus error | Discolor to blue forwhole layer |
| Butylene,Propylene | 1/4time | Plus error | Discolor toblue |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | High pressure gascylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | 2.7to 36% |
