Gastec 45H Quick-measuring Detector tubes Hydrogen sulphide + sulphur dioxide H2S+SO2 (0.02 ~ 8.0%)
ManufacturerGastec(View more products from this manufacturer)
Model45H
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Indicator: 0.2 to 4.0%
Measuring Range:
+ 0.02 to 0.2%, Number of Pump Strokes 2 to 10
+ 0.2 to 4.0%, Number of Pump Strokes 1
+ 4.0 to 8.0%, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Brown → Pale Yellow
Reaction Principle: H2S + I2 → 2HI + S, SO2 + I2 + H2O → 2HI + H2SO4
Coefficient of Variation: 10% (for 0.2 to 1 %), 5% (for 1 to 4 %)
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 |
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| Sampling Time | 45 seconds per pump stroke | |||
| Detecting Limit | 0.002% (n=10) | |||
| Colour Change | Brown → Pale Yellow | |||
| Reaction Principle | H2S + I2 → 2HI + S SO2 + I2 + H2O → 2HI + H2SO4 |
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| Coefficient of Variation | 10% (for 0.2 to 1 %), 5% (for 1 to 4 %) | |||
| Shelf Life | 3 Years | |||
| Corrections for temperature & humidity | Unnecessary | |||
| Store the tubes at cool and dark place. | ||||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Other Sulphur compounds | + | Pale yellow |
| Calibration gas generation | High pressure gas cylinder method |
| TLV-TWA | TLV-STEL | Explosive range |
| SO2:--(2014) H2S:1 ppm (2014) |
SO2:0.25 ppm (2014) H2S:5 ppm (2014) |
H2S:4.0 to 44 % |
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