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: pale blue-> black
Ambient Operating Conditions
Temperature: 0 to 60°C
Absolute Humidity: max 40 mg H2O / L
Reaction Principle
H2S + Cu2+ -> CuS + 2 H+
Cross Sensitivity
In the presence of sulfur dioxide, the indicating layer can change to a yellowish color, but the hydrogen sulfide measurement is not affected. Comparable concentrations of mercaptan will interfere with the reading.