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简单介绍：
甲基硫醇检测管71 Methyl mercaptan，Measuring Range 0.25 to 2.5 ppm 2.5 to 70 ppm 70 to 140 ppm，可检测的气体包括二氧化碳、氧气、氢气、臭氧、一氧化氮、氯乙烯、肼、二氧化氯、甲烷、乙烷、一氧化碳、氨气、氯气、二氧化氮、二氧化硫、氟化氢、硫化氢、氯化氢、砷化氢、光气、磷化氢、氰化氢、甲苯等
详情介绍：
甲基硫醇检测管71 Methyl mercaptan
Methyl mercaptan No.71
CH3SH
| Performance |
MeasuringRange | 0.25 to 2.5ppm | 2.5 to 70 ppm | 70 to 140 ppm | |
Number of PumpStrokes | 2 to 10 | 1 | 1/2 | |
CorrectionFactor | 1/2 to 1/10 | 1 | 2 | |
SamplingTime | 2 minutes per pumpstroke | |||
DetectingLimit | 0.1 ppm (n=10) | |||
ColorChange | White → Yellow | |||
ReactionPrinciple | 2CH3SH + PdSO4 → (CH3S)2Pd + H2SO4 | |||
| Coefficient ofVariation | 10% (for 2.5 to 20ppm), 5% (for 20 to 70 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 |
Acetylene,Ethylene | 2000 ppm | Plus error | Discolor palebrown |
CarbonMonoxide | 2000 ppm | Plus error | Discolor palebrown |
OtherMercaptans | - | Plus error | Discolor yellowstain |
HydrogenSulfide | 500 ppm | No effect | Nostain |
| Othersubstance measurable with this detector tube |
Substance | CorrectionFactor | PumpStroke | MeasuringRange |
Styrene | 1.5 | 1 | 0.075 to0.9% |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.5ppm | - | 3.9to 21.8% |