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河南省鑫属实业有限公司
河南省鑫属实业有限公司
磷化氢检测管7 PH3 PhosphineMeasuring Range 2.5 to 5 ppm 5 to 50 ppm 50 to 100 ppm，检测管不仅可用于室内空气检测、公共场所的空气质量监测、作业现场的空气及特定气体的有害气体检测箱. 对突发事件中的有毒有害气体进行快速的定性和半定量检测。突发性事故气体快速检测箱主要应用于突发性气体泄漏事故和紧急救援
| Performance |
| Measuring Range | 2.5 to 5 ppm | 5 to 50 ppm | 50 to 100 ppm |
| Pump Strokes | 4 | 2 | 1 |
| Correction Factor | 1/2 | 1 | 2 |
| Sampling Time | 1.5 minutes per pumpstroke | ||
| Detecting Limit | 0.5 ppm （n =4） | ||
| Color Change | White → Paleyellow | ||
| Reaction Principle | 2PH3 + 6HgCl2 +3H2O → Hg3P2 | ||
| Coefficient ofVariation | 10% （for5 to 10 ppm）, 5% （for 10 to 50 ppm） | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity | Unnecessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | （NOTE） |
| Substance | Concentration | Interference | Change color by itself |
| Arsine | 20 ppm | Plus error | Produces brownstain |
| Hydrogenselenide | 20 ppm | Plus error | Produces brownstain |
| Hydrogensulfide | 10 ppm | Plus error | Produces dark brownstain |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | High pressure gascylinder method | |
| TLV-TWA | TLV-S | Explosive range |
| 0.3ppm | 1ppm | - |
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