Gastec 4H 硫化水素クイック測定検出器チューブ H2S（10-4000ppm）
メーカーGastec(このブランドの他の製品を見る)
Model4H
お問い合わせ
安全なチェックアウト
高品質な対応
簡単な交換・返品
配送対応可能
Indicator: 100 to 2000 ppm
Measuring Range:
+ 10 ~ 100 ppm, Number of Pump Strokes 2 to 10
+ 100 ~ 2000 ppm, Number of Pump Strokes 1
+ 2000 ~ 4000 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: White → Brown
Reaction Principle: H2S + Pb(CH3COO)2 → PbS + 2CH3COOH
Coefficient of Variation: 5% (for 100 to 2000 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 |
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| Sampling Time | 45 seconds per pump stroke | |||
| Detecting Limit | 2 ppm (n=10) | |||
| Colour Change | White → Brown | |||
| Reaction Principle | H2S + Pb(CH3COO)2 → PbS + 2CH3COOH | |||
| Coefficient of Variation | 5% (for 100 to 2000 ppm) | |||
| 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 |
| Ammonia | No | No | |
| Carbon monoxide, Carbon dioxide |
No | No | |
| sulphur dioxide | 1/1 | + | No |
| Mercaptans | No | No | |
| Organic substance | No | No | |
| Nitrogen dioxide | 1/4 |  |
No |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 1 ppm | 5 ppm | 4.0 to 44% |
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