Gastec 127 便携式气体检测管对二氯苯检测管C6H4Cl2（2.5~300 ppm）
制造商: Gastec Model: 127 - 联系
Indicator: 2.5 to 300 ppm
Measuring Range: 2.5 to 300 ppm, Number of Pump Strokes 2
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Light brown
Reaction Principle: C6H4Cl2 + I2O5 + H2S2O7 → I2
Coefficient of Variation: 10% (for 2.5 to 100 ppm), 5% (for 100 to 300 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Details
Performance
| Measuring Range | 2.5 to 300 ppm |
| Number of Pump Strokes | 2 |
| Correction Factor | 1 |
| Sampling Time | 1.5 minutes per pump stroke |
| Detecting Limit | 1 ppm (n=2) |
| Colour Change | White → Light brown |
| Reaction Principle | C6H4Cl2 + I2O5 + H2S2O7 → I2 |
| Coefficient of Variation | 10% (for 2.5 to 100 ppm), 5% (for 100 to 300 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 colour by itself to |
| Aromatic hydrocarbons | + | Light brown | |
| Acetylene, Ethylene, Hexane | 0.2% |
No | Light brown (whole layer)( 0.2%) |
| Carbon monoxide | 0.1% |
No | Light brown (whole layer)(0.1%) |
| Esters | 0.2% |
No | Light brown (whole layer)(0.2%) |
| Alcohols, Ketones | 1% |
+ | No |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| m-Dichlorobenzene | 1.0 | 2 | 2.5 to 300 ppm |
| p-Dichlorobenzene | 1.0 | 2 | 2.5 to 300 ppm |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 25 ppm(2014) | 50 ppm(2014) | 2.2 to 12% |
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