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己烷气体检测管102H Hexane
Hexane No.102H
CH3(CH2)4CH3
| Performance |
Measuring Range | 0.015 to0.03% | 0.03 to 0.6% | 0.6 to 1.2% |
Number of Pump Strokes | 2 | 1 | 1/2 |
Correction Factor | 1/2 | 1 | 2 |
Sampling Time | 1 minute per pumpstroke | ||
Detecting Limit | 0.003% (n = 2) | ||
Color Change | Orange → Darkgreen | ||
Reaction Principle | CH3(CH2)4CH3 + Cr6+ + H2SO4 → Cr3+ | ||
| Coefficient ofVariation | 10% (for0.03 to 0.2 %), 5% (for 0.2 to 0.6 %) | ||
| 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 |
Acetylene | 3% | - | Produce dark green towhole layer |
Propane | 0.2% | - | Produce dark green towhole layer |
Aromatic HCs | 500 ppm | Plus error | Produce darkgreen |
Alcohols, Esters,Ethers | - | Plus error | Produce darkgreen |
HalogenatedHCs. | 5000 ppm | Plus error | Produce darkgreen |
Hydrogensulfide | 500 ppm | Plus error | Produce darkgreen |
Sulfurdioxide | 500 ppm | Plus error | Producegreen |
| Othersubstance measurable with this detector tube |
Substance | Correction | No. of PumpStrokes | MeasuringRange |
CycloHexane | Factor: 1.0 | 1/2, 1 or 2 | 0.015 to 1.2% |
Methylchyclohexane | Factor: 1.4 | 1 | 0.04 to0.84% |
| Calibration gasgeneration | Static gas dilutionmethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 50ppm | - | 1.1 to 7.5% |