| Ethylene | CH2:CH2 | NO.172 | |
|
|
|||
| Performance |
|
Measuring Range |
(25) to 800 ppm |
|
Number of Pump Strokes |
1 |
|
Correction Factor |
1 |
|
Sampling Time |
3 minutes per pump stroke |
|
Detecting Limit |
5 ppm (n=1) |
|
Color Change |
Pale yellow |
|
Reaction Principle |
Ethylene reacts with palladium sulfate to form an additive compounds, |
| Coefficient of Variation |
10% (for 25 to 200 ppm), 5% (for 200 to 800 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 color by itself |
|
Ammonia, Hydrogen cyanide |
- |
Plus error |
Discolor to white |
|
Carbon monoxide, Hydrogen |
- |
Plus error |
Discolor to blue for whole layer |
|
Hydrogen chloride |
- |
Plus error |
Discolors to pink |
|
Hydrogen sulfide |
- |
Plus error |
Discolors to black |
|
Butadiene |
- |
Plus error |
Discolors to white |
|
Butane, Pentane |
- |
Plus error |
Discolor to blue for whole layer |
|
Butylene, Propylene |
1/4 |
Plus error |
Discolor to blue |
| Other substance measurable with this detector tube |
|
Substance |
Correction Factor |
Pump Strokes |
Measuring Range |
|
Acetylene |
1.3 |
1 |
32.5 to 1040 ppm |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | 2.7 to 36% |
|
|
| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Blue