二氧化碳檢測(cè)管CO2 Carbon dioxide
Carbon dioxide No.2LL
CO2
| Performance |
MeasuringRange | 300 to 5000ppm |
Number of PumpStrokes | 300 to 5000 ppm(n=1) |
CorrectionFactor | 1 |
SamplingTime | 2 minutes per pumpstroke |
DetectingLimit | 30 ppm (n=1) |
ColorChange | Pale blue →Purple |
ReactionPrinciple | CO2 + N2H4 → NH2 |
| Coefficient ofVariation | 10% (for 300 to 1000ppm), 5% (for 1000 to 5000 ppm) |
| ShelfLife | 3 Years |
| Correctionsfor temperature & humidity | Unnecessary |
| Store the tubes at cool and darkplace. | |
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Ammonia | - | No effect | Nodiscoloration |
CarbonMonoxide | - | No effect | Nodiscoloration |
Hydrogen chloride, | - | No effect | Nodiscoloration |
Nitrogenoxides | - | No effect | Nodiscoloration |
Sulfurdioxide | - | No effect | Nodiscoloration |
Amines | - | No effect | Nodiscoloration |
Organicsolvents | - | No effect | Nodiscoloration |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 5000ppm | 30000ppm | - |































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