Gastec 134 便携式气体检测管四氯化碳检测管CCl4（0.5~60ppm）
制造商: Gastec Model: 134 - 联系
Indicator: 5 to 60 ppm
Measuring Range:
+ 0.5 to 2.5 ppm, Number of Pump Strokes 2 to 5
+ 2.5 to 60 ppm, Number of Pump Strokes 1
Sampling Time: 1 minute per pump stroke
Colour Change: White → Yellow
Reaction Principle:
+ CCl4 + I2O5 + H2S2O7 → COCl2,
+ COCl2 + (CH3)2NC6 H4CHO→ (CH3)2NC6 H4Cl2,
+ (CH3)2NC6 H4Cl2 + (C6H5)2NH → Yellow product
Coefficient of Variation: 15% (for 2.5 to 20 ppm), 10% (for 20 to 60 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Details
Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 1 minute per pump stroke | ||
| Detecting Limit | 0.2 ppm (n=5) | ||
| Colour Change | White → Yellow | ||
| Reaction Principle |
CCl4 + I2O5 + H2S2O7 → COCl2 |
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| Coefficient of Variation | 15% (for 2.5 to 20 ppm), 10% (for 20 to 60 ppm) | ||
| Shelf Life | 1 Years | ||
| Corrections for temperature & humidity | Unnecessary | ||
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. | |||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Hydrogen chloride | 100 ppm | + | Yellow |
| Chlorine, Bromine | 50 ppm | + | Yellow |
| Vinyl chloride, Methylene chloride | No | No | |
| Chloroform | No | No | |
| Methyl bromide | 100 ppm | + | Yellow |
| Tetrachloroethylene | No | No | |
| 1,1,1-Trichloroethane | 100 ppm | + | Yellow |
| Trichloroethylene | No | No |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| Chloropicrin | 1.0 | 1 | 25 to 60 ppm |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 5 ppm (2014) | 10 ppm (2014) | - |
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