产品分类
PRODUCT CENTER
销售电话：时经理
18121126516
021-64835787
二氧化氮检测管9L NO2 Nitrogen dioxide
Nitrogen dioxide No.9L
NO2
| Performance |
Measuring Range | 0.5 to 30 ppm | 30 to 125 ppm |
Number of PumpStrokes | 2 | 1 |
Correction Factor | 1 | By Scale |
Sampling Time | 1 minute per pumpstroke | |
Detecting Limit | 0.1 ppm (n=2) | |
Color Change | White → YellowishOrange | |
Reaction Principle | NO2 + o-Tolidine 仺 Yellowish orange product | |
| Coefficient ofVariation | 10% (for 0.5 to 3ppm), 5% (for 3 to 30 ppm) | |
| 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 |
Ammonia | - | No effect | Nodiscoloration |
Carbonmonoxide | - | No effect | Nodiscoloration |
Carbondioxide | - | No effect | Nodiscoloration |
Nitric oxide | 50 ppm | Faintdemarcation | Pale red color |
Bromine,Chlorine | 1/5 times | Plus error | Yellowish orangecolor |
Sulfurdioxide | 10 ppm | Bleach thediscoloration | Nodiscoloration |
Organicvapors | - | No effect | Nodiscoloration |
| Othersubstance measurable with this detector tube |
Substance | Correction Factor | Pump Strokes | Measuring Range |
Iodine | 0.4 | 2 | 0.2 to 12ppm |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 3ppm | 5ppm | - |