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196| Dräger-<strong>Tubes</strong> for short-term measurements<br />
Application Range<br />
Standard Measuring Range:<br />
Number of Strokes n: 1<br />
Time for Measurement:<br />
Hydrogen Sulfide 100/a<br />
Order No. CH 29 101<br />
100 to 2,000 ppm<br />
approx. 30 s<br />
Standard Deviation: ± 5 to 10 %<br />
Color Change:<br />
white ä brown<br />
Ambient Operating Conditions<br />
Temperature: 0 to 40 °C<br />
Absolute Humidity:<br />
3 to 40 mg H 2 O / L<br />
Reaction Principle<br />
H 2 S + Pb 2+ ä PbS + 2 H +<br />
Cross Sensitivity<br />
No interference by:<br />
2,000 ppm sulfur dioxide<br />
100 ppm nitrogen dioxide<br />
ST-129-2001
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