Draeger Tube, Box of 5 Tetrahydrothiophene
DRAEGER SAFETY INC.
/ Model #8101341
Details
Draeger Tube - Tetrahydrothiophene 1/b
Order No. 81 01 341
| Application Range | |
| Standard Measuring Range | 1 to 10 ppm / 4 to 40 mg/m3 |
| Number of Strokes n: | 30 |
| Time for Measurement: | in air: approx. 15 minutes |
| in natural gas: approx. 10 minutes | |
| Standard Deviation: | ± 15 to 20% |
| Color Change: | violet to yellow brown |
| Ambient Operating Conditions | |
| Temperature: | 0 to 35° C ~ 32 to 95° F |
| Absolute Humidity: | < 30 mg H2O /L |
| Reaction Principle | |
| THT + KMnO4 → yellow brown reaction product | |
| Cross Sensitivity | |
| Up to 10 ppm hydrogen sulfide is adsorbed in the pretube, causing a brown discoloration. It is impossible to measure tetrahydrothiophene in the presence of mercaptans. Up to 100 ppm of olefines (e. g. ethene, propene) will cause the color of the indicating layer to become lighter, at higher concentrations the olefins are also indicated. Up to 200 ppm methanol does not interfere. | |
| Extension of the Measuring Range | |
| 1.6 to 16 ppm / 6.4 to 64 mg/m3 n = 20 multiply the reading by 1.6 |
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