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简单介绍：
硫化氢检测管4HT Hydrogen sulphide H2S，Measuring Range 1 to 2 % 2 to 20 % 20 to 40 % Number of Pump Strokes 2 1 1/2 Correction Factor 1/2 1 2 Sampling Time 1 minute per pump stroke Detecting，硫化氢气体检测管价格
详情介绍：
硫化氢检测管4HT Hydrogen sulphide
Hydrogen sulphide No.4HT
H2S
| Performance |
Measuring Range | 1 to 2 % | 2 to 20 % | 20 to 40 % |
Number of Pump Strokes | 2 | 1 | 1/2 |
Correction Factor | 1/2 | 1 | 2 |
Sampling Time | 1 minute per pump stroke | ||
Detecting Limit | 0.2% (n=2) | ||
Color Change | Pale Blue → Blackish Brown | ||
Reaction Principle | H2S + CuSO4 → CuS + H2SO4 | ||
| Coefficient of Variation | 10% (for 2 to 6 %), 5% (for 6 to 20 %) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Unnecessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Sulfur dioxide | 5% | Minus error | No discoloration |
Mercaptans | 10% | Plus error | No discoloration |
| Other substance measurable with this detector tube |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 10ppm | 15ppm | 4.0 to 44% |