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1,3-丁二烯气体检测管174L 1,3-Butadiene
1,3-Butadiene No.174
CH2:CHCH:CH2
| Performance |
MeasuringRange | 2.5 to 5 ppm | 5 to 100 ppm |
Number of Pump Strokes | 8 | 4 |
CorrectionFactor | 1/2 | 1 |
SamplingTime | 3 minutes per pumpstroke | |
DetectingLimit | 0.5 ppm (n=8) | |
ColorChange | Pale yellow →White | |
ReactionPrinciple | CH2:CHCH:CH2 +(NH4)2MoO4 + Pd2SO4 → White product | |
| Coefficient ofVariation | 10% (for5 to 20 ppm), 5% (for 20 to 100 ppm) | |
| ShelfLife | 3Years | |
| Correctionsfor temperature & humidity | Temperature correction is necessary | |
| Store the tubes at cool and darkplace. | ||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Acetylene, Hydrogencyanide | - | Plus error | Discolor towhite |
Carbon monoxide,Hydrogen | - | Plus error | Discolors to blue forwhole layer |
Hydrogenchloride | - | Plus error | Discolors to pinkstain |
Hydrogensulfide | - | Plus error | Discolors toblack |
Ethylene, Propylene,Butylene | - | Plus error | Discolors toblue |
Butane,Pentane | - | Plus error | Discolor to blue forwhole layer |
| Othersubstance measurable with this detector tube |
Substance | Correction Factor | Pump Strokes | Measuring Range |
1,3-Pentadiene | 8.5 | 4 | 42.5 to 850ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | - | 2.0 to 12% |