| Oxygen | O2 | NO.31B | |
|
|
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| Performance |
|
Measuring Range |
3 to 6% |
6 to 24% |
|
|
Number of Pump Strokes |
1 |
1/2 |
|
|
Correction Factor |
1/2 |
1 |
|
|
Sampling Time |
2 minutes per pump stroke |
||
|
Detecting Limit |
2% (n=1) |
||
|
Color Change |
Black |
||
|
Reaction Principle |
O2 + 4TiCl3 + 6H2O |
||
| Coefficient of Variation | 5% (for 6 to 24 %) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity |
Unnecessary | ||
| 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 |
40% |
Plus error |
No discoloration |
Note:
If more than 40% carbon dioxide is coexisted, the tube reading will be
1% higherthan the true concentration.
(At 21% oxygen concentration tube 31B indicates22%.)
| Calibration gas generation | Dynamic gas dilution method | |
| TLVtoTWA | TLVtoSTEL | Explosive range |
| - | - | - |
|
|
| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
White
4TiO2 + 12HCl