| Sulfur dioxide | SO2 | NO.5M | |
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| Performance |
|
Measuring Range |
20 to 100ppm |
100 to 1800 ppm |
1800 to 3600 ppm |
|
Number of Pump Strokes |
4 |
1 |
1/2 |
|
Correction Factor |
1/5 |
1 |
2 |
|
Sampling Time |
45 seconds per pump stroke |
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Detecting Limit |
4 ppm (n=4) |
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Color Change |
Purple |
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Reaction Principle |
Sulfur dioxide reacts with barium chloride to liberate |
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| Coefficient of Variation | 10% (for 100 to 600 ppm), 5% (for 600 to 1800 ppm) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity |
Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
Carbon monoxide, |
- |
No effect |
No discoloration |
|
Carbon dioxide |
- |
No effect |
No discoloration |
|
Nitrogen dioxide |
1/10 |
Plus error |
Produces white stain |
|
Hydrogen sulfide |
10 times |
Minus error |
No discoloration |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | 5ppm | - |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
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