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Dräger sampling tubes and systems - 20351 A

Sulfuryl fluoride1/ameasurement range 1to5ppmEthylene oxide1/ameasurement range 1to15ppm Carbon dioxide0.1%/ameasurement range0.1to1.2Vol. -%We recommend using the Dräger Pac 7000 with an electro-chemical sensor for measuringoxygen (measuring range 0 – 25 Vol.-%). It is particularly small and handy.If the concentration of carbon dioxide is to be measured at the same time, the Dräger X-am7000 can be used, as this has an IR-CO
2 sensor (measurement range 0 – 5or 0 – 100 Vol.-%). This is the best sensor for this type of CO
2 measurement. In this measuring device an electro-chemical sensor (measuring range 0 – 25 Vol.-%) is used tomeasure oxygen.Whenever a measurement is to be taken to determine risk of explosion, note that catalytic ex-sensors in an inert atmosphere (e. g. caused by the leakage of inert gases) do not work. You need atmospheric oxygen for the measurement. In this case, the Dräger X-am 7000 should be used with an infrared ex-sensor. The Dräger Liquid Extraction method (DLE) is used for the determination of volatile contaminants in water. The measurement basically consists of two steps:

2.12Determination of Volatile Contaminants in Liquid Samples

- the extraction of the contaminant- the measurement of the contaminant During the extraction process, the contaminant in the water sample is transferred from theliquid phase into the gas phase. A 200 ml sample of water is poured into a specially calibrated gas washing bottle. An activated charcoal tube is attached to the inlet of the bottle to prevent any airborne contaminants from entering the water during the test. TheDräger-Tube is attached to the outlet of the bottle and a specific volume of air is drawn through the water sample. The porous frit in the bottle produces a high number of small air bubbles in the water which extract the contaminant as they break at the surface. The extracted contaminant is measured from the headspace of the bottle in the Dräger-Tube.