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299

Hydrogen Sulfide 1/d

for use in Multi-test Med. Gases

Order No.81 01 831

Application Range Standard Measuring Range:1 to 20 ppm Test Volume: 1 L Flow Rate: 0.17 L / min (CO
2 )Time for Measurement:6 minStandard Deviation: ± 15 %

Dräger sampling tubes and systems - 20351 H

Color Change: white brown Ambient Operating Conditions Temperature: 2 to 40 °CAbsolute Humidity:max 40 mg H
2 O / LPressure:The tube may only be used for depressurized compressed air Reaction Principle H
2 S + Cu
2+ CuS + 2 H
+ Cross Sensitivity 500 ppm hydrochloric acid, 500 ppm sulfur dioxide, 500 ppm ammonia or 100 ppm arsine do not affect the indication.Methyl mercaptan and ethyl mercaptan change the entire indicating layer to a pale yellow. when mixed with hydrogen sulfide the reading is extended by approx. 30 %. Evaluation reading on the (n= 10) scale = ppm H
2 S
ST-131-2001