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199

Hydrogen Sulfide+ Sulfur Dioxide 0.2%/A

Order No.CH 28 201

Dräger sampling tubes and systems - 20351 H

Application Range Standard Measuring Range: 0.2 to 7 Vol.-% Number of Strokes n: 1 + 2 desorption strokes in clean airTime for Measurement: approx. 2 minStandard Deviation: ± 5 to 10 % Color Change: brown pale yellow Ambient Operating Conditions Temperature: 0 to 40 °C Absolute Humidity: max. 40 mg H
2 O / L Reaction Principle H
2 S + I
2 2 HI + S
x SO
2 + I
2 + H
2 O 2 HI + H
2 SO
4 Cross Sensitivity All substances oxidized by iodine are indicated, but with different sensitivities. It is impossible to measure hydrogen sulfide and sulfur dioxide in the presence of such substances. Extension of the Measuring Range Using n = 10, divide the reading by 10; the measuring range will be 0.02 to 0.7 Vol.-%.
ST-195-2001