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简单介绍：
5La SO2气体检测管 Sulphur dioxide，Measuring Range 0.5 to 1 ppm 1 to 20 ppm 2 to 30 ppm 30 to 60 ppm，便携式气体检测仪,氢气报警仪，尽在中国环境应急监测仪器网突发化学事故应急检测箱，核化应急检测箱突发事件应急 检测箱标准配置，检测管，水质应急检测箱，突发事件气体应急检测箱，公共场所突发灾害应急检测箱
详情介绍：
5La SO2气体检测管 Sulphur dioxide
Sulphur dioxide No.5LA
SO2
| Performance |
MeasuringRange | 0.5 to 1 ppm | 1 to 20 ppm | 2 to 30 ppm | 30 to 60 ppm |
Number of PumpStrokes | 8 | 4 | 2 | 1 |
CorrectionFactor | 1/4 | 1/2 | 1 | 2 |
SamplingTime | 1 minute per pumpstroke | |||
DetectingLimit | 0.1ppm (n=8) | |||
ColorChange | Blue → Yellow | |||
ReactionPrinciple | SO2 + BaCl2 +H2O 仺 BaSO3 + 2HCl | |||
| Coefficient ofVariation | 10% (for2 to 10 ppm), 5% (for 10 to 30 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 |
Carbonmonoxide, | - | No effect | Nodiscoloration |
Carbondioxide | 100% | Faintdemarcation | 100% CO2gives faint demarcation |
Nitrogendioxide | 1:1 | Plus error | Produces pale purplediscoloration |
Hydrogensulfide | - | No effect | Nodiscoloration |
| Othersubstance measurable with this detector tube |
Substance | Correction Factor | pump strokes | Measuring range |
Thionylchloride | 0.72 | 2 | 1.44 to 21.6ppm |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | 5ppm | - |