Application Range
Standard Measuring Range: 400 to 8,000 / 50 to 500 ppm
Number of Strokes n: 1 / 10
Time for Measurement: approx. 15 s / approx. 3 min
Standard Deviation: ± 10 to 15 %
Color Change: blue -> yellow
Ambient Operating Conditions
Temperature: 0 to 50 °C
Absolute Humidity: 1 to 15 mg H2O / L
Reaction Principle
SO2 + IO3– -> H2SO4 + I–
Cross Sensitivity
Hydrochloric acid is indicated in high concentrations. 10,000 ppm Hydrochloric acid corresponds to an indication of 150 ppm sulfur dioxide. No interference by:
500 ppm nitrogen monoxide
100 ppm nitrogen dioxide
60/1 หมู่ 5, ถนนทางหลวงหมายเลข 36, ตำบลทับมา อำเภอเมืองระยอง จังหวัดระยอง, 21000
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