詳情介紹：
二氧化碳氣體檢測管2LC Carbon dioxide
Carbon dioxide No.2LC
CO2
| Performance |
Measuring Range | 100 to 2000ppm | 2000 to 4000ppm |
Number of Pump Strokes | 1 | 1/2 |
Correction Factor | 1 | 2 |
Sampling Time | 2 minutes per pumpstroke | |
Detecting Limit | 20 ppm (n=1) | |
Color Change | Pale Red →Yellow | |
Reaction Principle | CO2+ 2KOH → K2CO3+ H2O | |
| Coefficient ofVariation | 10% (for 100 to 600ppm), 5% (for 700 to 2000 ppm) | |
| ShelfLife | 2Years | |
| 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 | 1000 ppm | No effect | No discoloration by1000ppm |
Hydrogenchloride | 500 ppm | No effect | No discoloration by500 ppm |
Chlorine | 20 ppm | No effect | No discoloration by10 ppm |
HCN,H2S | 100 ppm | No effect | No discoloration by50 ppm |
Sulfurdioxide | 25 ppm | No effect | No discoloration by25 ppm |
Nitorgendioxide | 20 ppm | No effect | No discoloration by20 ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 5000ppm | 30000ppm | - |
