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汽油检测管101L CnHm Gasoline
汽油检测管101L CnHm Gasoline，Measuring Range 30 to 1000 ppm 1000 to 2000 ppm Number of Pump Strokes 2 1 Correction Factor 1 2 Sampling Time 2 minutes per pump stroke Detecting Limit 5 ppm (n=2)汽油检测管价格
汽油检测管101L CnHm Gasoline的详细介绍
汽油检测管101L CnHm Gasoline
Gasoline No.101L
CnHm
| Performance |
|
Measuring Range |
30 to 1000 ppm |
1000 to 2000ppm |
|
Number of Pump Strokes |
2 |
1 |
|
Correction Factor |
1 |
2 |
|
Sampling Time |
2 minutes per pumpstroke |
|
|
Detecting Limit |
5 ppm (n=2) |
|
|
Color Change |
Brownish yellow →Dark green |
|
|
Reaction Principle |
CnHm + Cr6++ H2SO4 → Cr3+ |
|
| Coefficient ofVariation |
10% (for 30 to 300ppm), 5% (for 300 to 1000 ppm) |
|
| ShelfLife | 3Years | |
| Correctionsfor temperature & humidity |
Unnecessary | |
| Store the tubes at cool and darkplace. | ||
| Possible coexisting substances and theirinterferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
| Hydrogen sulfide | - |
Plus error |
Dark brown |
|
Acetylene |
- |
Plus error |
Dark brown |
| Aromatic HCs | - | Pluserror | Darkgreen |
| Esters,Ethers,Alcohols | - | Pluserror | Darkgreen |
| Sulfur dioxide | - | Pluserror | Darkgreen |
Organic solvents( C3) |
- | Pluserror | Darkgreen |
| Othersubstance measurable with this detector tube |
|
Substance |
Correction |
No. of PumpStrokes |
MeasuringRange |
|
Allylchloride |
Factor: 34 |
1/2 |
0.1 to 3.4% |
|
Heptane |
Factor: 1.0 |
1 or 2 |
30 to 2000 ppm |
|
Isobutene |
Factor: 22 |
1 |
0.07 to2.2% |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 300ppm | 500ppm | 1.4 to 7.6% |