Dräger Tubes For Short Term Measurements: Tetrahydrothiophene 1/b
Dräger Safety offer a massive range of short-term gas detection tubes for the measurement of various gases. This particular set of tubes is for (Tetrahydrothiophene 1/b).
The tubes come in a pack of 5 tubes and have a shelf life of 2 years.
|Part no||Dräger Tube||Substance||Measurement Range|
|8101341||Tetrahydrothiophene 1/b (5)||Dicyclopentadiene||1.5 to 15 mg/m3|
|Tetrahydrothiophene||1 to 45 mg/m3|
|Standard Measuring Range:||1 to 10 ppm / 4 to 40 mg/m3|
|Number of Strokes n:||30|
|Time for Measurement:||in air: approx. 15 min in natural gas: approx. 10 min|
|Standard Deviation:||± 15 to 20 %|
|Colour Change:||violet to yellow brown|
Ambient Operating Conditions:
|Temperature:||0 to 35 °C|
|Absolute Humidity||< 30 mg H2O / L|
THT + KMnO4 ~> yellow brown reaction product
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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