Gastec 120 Quick-measuring Detector tubes Aromatic hydrocarbons (0.4~ 200 ppm )
ManufacturerGastec(View more products from this manufacturer)
Model120
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Indicator: 2 to 100 ppm
Measuring Range:
+ 0.4 to 2 ppm , Number of Pump Strokes 2 to 5
+ 2 to 100 ppm , Number of Pump Strokes 1
+ 100 to 200 ppm , Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Brown
Reaction Principle: Aromatic Hydrocarbons + I2O5 + H2SO4 → I2
Coefficient of Variation: 10% (for 2 to 20 ppm), 5% (for 20 to 100 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor | 1/2 to 1/5 | 1 | 2 | |||
| Sampling Time | 1.5 minutes per pump stroke | |||||
| Detecting Limit | 0.2 ppm (n=5) | |||||
| Colour Change | White → Brown | |||||
| Reaction Principle | Aromatic Hydrocarbons + I2O5 + H2SO4 → I2 | |||||
| Coefficient of Variation | 10% (for 2 to 20 ppm), 5% (for 20 to 100 ppm) | |||||
| Shelf Life | 3 Years | |||||
| Corrections for temperature & humidity | Unnecessary | |||||
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |
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