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甲醇气体检测管111L
点击次数：207发布时间：2012/3/20 11:24:45
更新日期：2014/4/30 16:30:03
所 在 地：其它
产品型号：111L
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简单介绍
甲醇气体检测管111L MethanolMeasuring Range 20 to 40 ppm 40 to 1000 ppm Number of Pump Strokes 2 1 Correction Factor 1/2 1 Sampling Time 4 minutes per pump stroke Detecting Limit 甲醇气体检测管111L Methanol
甲醇气体检测管111L Methanol
的详细介绍甲醇气体检测管111L Methanol
Methanol No.111L
CH3OH
| Performance |
| Measuring Range | 20 to 40 ppm | 40 to 1000 ppm |
| Number of Pump Strokes | 2 | 1 |
| Correction Factor | 1/2 | 1 |
| Sampling Time | 4 minutes per pumpstroke | |
| Detecting Limit | 5 ppm （n=2） | |
| ColorChange | Pink → Paleblue | |
| ReactionPrinciple | CH3OH + Cr6+ + H2SO4 → Cr3+ | |
| Coefficient ofVariation | 15% （for 40 to 200ppm）, 10% （for 200 to 1000 ppm） | |
| ShelfLife | 3Years | |
| Correctionsfor temperature & humidity | Temperature correction is necessary | |
| Store the tubes at cool ａnd darkplace. | ||
| Possible coexisting substances ａnd theirinterferences | （NOTE） |
| Substance | Concentration | Interference | Change color by itself |
| Alcohols | - | Plus error | Produce similar stainby themselves. |
| Othersubstance measurable with this detector tube |
| Substance | Correction | PumpStrokes | MeasuringRange |
| Ethylene Chlorohydrine | by scale | 3 | 20 to 200ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 200ppm | 250ppm | 6 to36% |
