CH| Acetylene | HCCH |
NO.171 | |
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| Performance |
|
Measuring Range |
0.05 to 0.1% |
0.1 to 2.0% |
2.0 to 4.0% |
|
Number of Pump Strokes |
2 |
1 |
1/2 |
|
Correction Factor |
1/2 |
1 |
2 |
|
Sampling Time |
2 minutes per pump stroke |
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Detecting Limit |
0.02 % (n=2) |
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Color Change |
White |
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Reaction Principle |
Acetylene reduces iodine pentoxide to liberate iodine, which produces a brown in color. |
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| Coefficient of Variation | 15% (for 0.1 to 0.5 %), 10% (for 0.5 to 2 %) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity |
Temperature correction is necessary | ||
| Store the tubes in the cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
Carbon monoxide |
0.1% |
Plus error |
Produce brown stain |
|
Ethylene |
0.5% |
Plus error |
Produce brown stain |
|
More than C3 HCs |
- |
Plus error |
Produce brown stain |
| Other substance measurable with this detector tube |
|
Substance |
Correction Factor |
Pump Strokes |
Measuring Range |
|
Benzene |
0.3 |
4 |
0.03 to 0.6% |
|
Ethylene |
1.0 |
1 |
0.1 to 2% |
|
1,1,1-Trichloroethane |
0.6 |
1 |
0.06 to 1.2% |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | 2.5 to 81% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Brown