Gastec 133L Quick-measuring Detector tubes Tetrachloroethylene Cl2C：CCl2 (1~75ppm)
ManufacturerGastec(View more products from this manufacturer)
Model133L
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Vạch chỉ thị: 2 ~ 25 ppm
Thang đo:
+ 1 ~ 2 ppm, bơm 2 lần
+ 2 ~ 25 ppm, bơm 1 lần
+ 25 ~ 75 ppm, bơm 1/2 lần
Thời gian lấy mẫu: 45 giây mỗi lần bơm
Chuyển đổi màu: vàng sang hồng
Phương trình phản ứng: Cl2C:CCl2 + PbO2 + H2SO4 → HCl, HCl + Base → Chloride
Hệ số biến đổi: 10% (2 ~ 5 ppm), 5% (5 ~ 25 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 45 seconds per pump stroke | |||
| Detecting Limit | 0.4 ppm (n=2) | |||
| Colour Change | Yellow → Pink | |||
| Reaction Principle | Cl2C:CCl2 + PbO2 + H2SO4 → HCl HCl + Base → Chloride |
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| Coefficient of Variation | 10% (for 2 to 5 ppm), 5% (for 5 to 25 ppm) | |||
| Shelf Life | 2 Years | |||
| Corrections for temperature & humidity | Temperature correction is necessary | |||
| 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 |
| Nitric Oxide, Nitrogen dioxide | No | No | |
| Hydrogen chloride, Chlorine, Bromine | + | Pink | |
| Acetone | ≦ 200 ppm | No | No |
| Unsaturated Halogenated HCs | + | Pink | |
| Aromatic hydrocarbons | ≧ 100 ppm |  |
No |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| Pentachloroethane | 20 | 1 | 40 to 500 ppm |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 25 ppm | 100 ppm | - |
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