二氧化氮檢測(cè)管9D NO2 Nitrogen dioxide
Nitrogen dioxide No.9D
Performance |
Measuring Range | 0.1 to 30 ppm |
Sampling Hours | 1 to 10 hours |
Detecting Limit | 0.05 ppm (10hours) |
Color Change | White→ Yellow |
Reaction Principle | NO2 + o-Toluidine → Yellowproduct |
Coefficient ofVariation | 10%(for 1 to 30 ppm-hr) |
ShelfLife | 1 Year |
Correctionsfor temperature & humidity | Temperature correction isnecessary |
Store the tubes inthe refrigerator to keep at 10ºC (50ºF) orbelow. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Bromine,Chlorine | - | Yellow | |
Ammonia Carbon monoxide Nitric oxide sulphur dioxide Organic gases and vapour |
| No | No |
Calibration gasgeneration | Diffusion tubemethod |
TLV-TWA | TLV-S | Explosive range |
3 ppm | 5 ppm | - |