Gastec 70 Quick-measuring Detector tubes Mercaptans R-SH (0.5-120ppm)
ຜູ້ຜະລິດGastec(ເບິ່ງສິນຄ້າອື່ນໆຂອງຍີ່ຫໍ້ນີ້)
Model70
ຕິດຕໍ່
ການຊຳລະເງິນທີ່ປອດໄພ
ການຮັບປະກັນຄຸນນະພາບ
ປ່ຽນ ແລະ ສົ່ງຄືນງ່າຍ
ມີບໍລິການຈັດສົ່ງ
Indicator: 5 to 120 ppm
Measuring Range:
+ 0.5 to 5 ppm, Number of Pump Strokes 2 to 10
+ 5 to 120 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Yellow
Reaction Principle: 2RSH+ PdSO4 → (RS)2Pd+ H2SO4
Coefficient of Variation: 10% (for 5 to 40 ppm), 5% (for 40 to 120 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 | 1.5 minutes per pump stroke | ||
| Detecting Limit | 0.2 ppm (n=10) | ||
| Colour Change | White → Yellow | ||
| Reaction Principle | 2R SH+ PdSO4 → (RS)2Pd+ H2SO4 |
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| Coefficient of Variation | 10% (for 5 to 40 ppm), 5% (for 40 to 120 ppm) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Carbon monoxide | 2000 ppm | + | Pale brown (whole layer) |
| Hydrogen sulphide | 500 ppm | + | No |
| Acetylene, Ethylene | 2000 ppm | + | Pale brown (whole layer) |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| Ethyl mercaptan | 1.0 | 1 to 10 | 0.5 to 120 ppm |
| Isopropyl mercaptan | 2.0 | 1 | 10 to 240 ppm |
| Methyl mercaptan | 0.7 | 1 to 10 | 0.35 to 84 ppm |
| Propyl mercaptan | 4.5 | 1 | 22.5 to 540 ppm |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |
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