详情介绍：
氧气检测管31B Oxygen
Oxygen No.31B
O2
| 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 pumpstroke | ||
Detecting Limit | 2% (n=1) | ||
Color Change | Black → White | ||
Reaction Principle | O2 + 4TiCl3 +6H2O → 4TiO2+ 12HCl | ||
| Coefficient ofVariation | 5% (for6 to 24 %) | ||
| 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 |
Carbon dioxide | 40% | Plus error | Nodiscoloration |
Note:
If more than 40% carbon dioxide is coexisted, the tube reading willbe 1% higherthan
the true concentration.
(At 21% oxygen concentration tube 31B indicates22%.)
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Dynamic gas dilution method | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |
