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氟化氢气体检测管17L Hydrogen fluoride，Measuring Range 0.09 to 0.2 ppm 0.2 to 10 ppm 10 to 72 ppm Number of Pump Strokes 5 3 1 Correction Factor 0.45 1 7.2 Sampling Time氟化氢气体检测管价格
详情介绍：
氟化氢气体检测管17L Hydrogen fluoride
Hydrogen fluoride No.17L
HF
| Performance |
Measuring Range | 0.09 to 0.2 ppm | 0.2 to 10 ppm | 10 to 72 ppm |
Number of Pump Strokes | 5 | 3 | 1 |
Correction Factor | 0.45 | 1 | 7.2 |
Sampling Time | 1 minute per pump stroke | ||
Detecting Limit | 0.05 ppm (n=5) | ||
Color Change | Yellow → Brown | ||
Reaction Principle | Hydrogen fluoride reacts with indicator to produce reddish brown stain. | ||
| Coefficient of Variation | 10% (for 0.5 to 5 ppm), 5% (for 5 to 20 ppm) | ||
| Shelf Life | 2 Years | ||
| Corrections for temperature & humidity | Humidity correction is necessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Nitric acid | 1/5 | + | Reddish purple |
Hydrogen chloride | 1/2 | + | Reddish purple |
| Nitrogen dioxide | No | No |
| Other substance measurable with this detector tube |
| Calibration gas generation | Permeation tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.5ppm | C2 ppm | - |