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5LC sulfur dioxide detection tube
5LC sulfur dioxide SO2 detection tube Sulphur dioxide, 5LC sulfur dioxide detection tube Sulphur dioxide, environmental air quality monitoring system,
Product details
5LC 二氧化硫检测管 Sulphur dioxide
Sulphur dioxide No.5LC
SO2
| Performance |
Measuring Range |
0.1 to 0.25 ppm | (0.25) to 10 ppm | 10 to 25 ppm |
Number of Pump Strokes |
4 | 2 | 1 |
Correction Factor |
0.4 | 1 | 2.5 |
Sampling Time |
2 minutes per pumpstroke |
||
Detecting Limit |
0.02 ppm (n=4) |
||
Color Change |
Bluish purple →White |
||
Reaction Principle |
SO2 +I2 +2H2O 仺 H2SO4 +2HCl |
||
| Coefficient ofVariation | 10% (for0.25 to 2 ppm), 5% (for 2 to 10 ppm) | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity |
Temperature correction isnecessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance |
Concentration |
Interference |
Change color by itself |
Nitrogendioxide |
- | Minus error |
Produces brown stainof 1 mm |
Hydrogensulfide |
1/10 |
Plus error |
Produce uncleardemarcation |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | 5ppm | - |
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