Performance |
Measuring Range | 1.04 to 2000ppm |
Sampling Hours | 0.5 to 48hours |
Detecting Limit | 2 ppm (10hours) |
Color Change | Pale Yellow →Brown |
Reaction Principle | CO +Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3 |
Coefficient ofVariation | 10%(for 50 to 1000 ppm-hr) |
ShelfLife | 2 Year |
Correctionsfor temperature & humidity | Unnecessary |
Store the tubes atcool and dark place. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself to |
Nitrogendioxide | 5 ppm | - | No |
Chlorine | - | No | No |
Hydrogensulphide | - | + | Reddishbrown |
Calibration gasgeneration | Diffusion tubemethod |
TLV-TWA | TLV-S | Explosive range |
25 ppm | - | 12.5to 74% |