Application Range
Standard Measuring Range: 0.2 to 7 vol.%
Number of Strokes n: 1+ 2 desorption strokes in clean air
Time for Measurement: approx. 2 min
Standard Deviation: ± 5 to 10 %
Color Change: brown -> bright yellow
Ambient Operating Conditions
Temperature: 0 to 40°C
Absolute Humidity: max 40 mg H2O / L
Reaction Principle
H2S + I2 -> 2 HI + S2
SO2 + I2 + 2H2O -> 2 HI + H2SO4
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. %
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