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5L SO2 detection tube Sulphur dioxide
5L SO2 detection tube Sulphur dioxide，Measuring Range 1.25 to 2.5ppm 2.5 to 5ppm 5 to 100ppm 100 to 200ppm， Public * * emergency detection, toxic and
Product details
5L SO2 检测管 Sulphur dioxide
Sulphur dioxide No.5L
SO2
| Performance |
MeasuringRange |
1.25to 2.5ppm |
2.5to 5ppm |
5to 100ppm |
100to 200ppm |
Number of PumpStrokes |
4 |
2 |
1 |
1/2 |
CorrectionFactor |
1/4 |
1/2 |
1 |
2 |
SamplingTime |
1 minute per pumpstroke |
|||
DetectingLimit |
0.25ppm (n=4) |
|||
ColorChange |
Blue → Yellow |
|||
ReactionPrinciple |
SO2 +BaCl2 +H2O 仺 BaSO3 +2HCl |
|||
| Coefficient ofVariation | 10% (for 5 to 20ppm), 5% (for 20 to 100 ppm) |
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| 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 |
Carbonmonoxide, |
- | No effect |
Nodiscoloration |
Carbondioxide |
- | No effect |
Nodiscoloration |
Nitrogendioxide |
1:1 |
Plus error |
Produces light purplediscoloration |
Hydrogensulfide |
- | No effect |
Nodiscoloration |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | 5ppm | - |
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