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丙烯腈气体检测管191L Acrylonitrile
丙烯腈气体检测管191L Acrylonitrile的详细介绍
丙烯腈气体检测管191L Acrylonitrile
Acrylonitrile No.191L
CH2:CHCN
| Performance |
|
MeasuringRange |
0.1 to 0.2ppm |
0.2 to 6.0 ppm |
6.0 to 18.0ppm |
|
Number of PumpStroke |
4 |
2 |
1 |
|
CorrectionFactor |
1/2 |
1 |
3 |
|
Sampling Time |
3 minutes per pumpstroke |
||
|
Detecting Limit |
0.05 ppm (n=4) |
||
|
Color Change |
Yellow → Pink |
||
|
Reaction Principle |
Pretreatmenttube: CH2:CHCN + Cr6+ +H2SO4 →HCN |
||
| Coefficient ofVariation |
10% (for 0.25 to 1ppm), 5% (for 1 to 6 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 |
|
Hydrogenchloride |
- |
No effect |
Nodiscoloration |
|
Hydrogencyanide |
- |
No effect |
Nodiscoloration |
|
Nitriles( |
- |
Plus error |
Discolor pinkstain |
|
Acetonecyanohidrin |
- |
Plus error |
Discolor pinkstain |
|
Alcohols, Esters,Ketones |
- |
No effect |
Nodiscoloration |
|
Aromatichydrocarbons |
- |
No effect |
Nodiscoloration |
C3)| Othersubstance measurable with this detector tube |
|
Substance |
CorrectionFactor |
No. of PumpStrokes |
MeasuringRange |
|
n-Butyronitrile |
30 |
1 |
6 to 180 ppm |
|
2-Methyl-3-butenenitrile |
2.0 |
2 |
0.4 to 12 ppm |
|
2-Pentenenitrile |
1.2 |
2 |
0.24 to 7.2ppm |
|
3-Pentenenitrile |
2.0 |
2 |
0.4 to 12ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | - | 3 to17% |