Application Range
Standard Measuring Range: 100 to 1,000 ppm / 500 to 5,000 ppm
Number of Strokes n: 5 / 1 + 4 desorption strokes in clean air
Time for Measurement: approx. 1.5 min / 18 sec
Standard : ± 10 to 20 %
Color Change: grey -> red brown
Ambient Operating Conditions
Temperature: 10 to 30 °C
Absolute Humidity: max 30 mg H2O / L
Reaction Principle
a) NO + CrVI -> NO2
b) NO2 + o-dianisidine -> red brown reaction product
Cross Sensitivity
Chlorine and ozone are also indicated, but with different sensitivities.
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