Item #: 6733051
MFG: Draeger

Carbon Monoxide Detection Tubes 2/a (2 - 300 ppm)

For short-term measurements more than 160 Draeger-Tubes are available to measure the so-called spot concentrations of specific gases. A wide range of different gases and vapours can be detected and measured, e.g.: Determining and measuring concentration peaks, Measuring personal exposure in the inhalation area, Detecting leaks in pipelines, gas installations etc., and Air analysis in sewers, shafts and confined spaces.

Contains 10 tubes

Standard Measuring Range2 to 60 ppm
Number of Strokes (n)10
Time for Measurementapprox.4 min.
Standard Deviation±10 to 15 %
Colour Changewhite ─> brownish
Temperature0 to 50° C
Absolute Humidity2 to 20 mg H2O / L
Reaction Principle5 CO + I2O5 > I2 + 5 CO2
Cross SensitivityAcetylene is also indicated, however, with
less sensitivity. Petroleum hydrocarbons,
benzene, halogenated hydrocarbons and
hydrogen sulfide are retained in the pre-
layer. In the case of higher concentrations
of interfering hydrocarbons, use should
be made of a carbon pre-tube (CH24101)
Higher concentrations of easily cleavable
halogenated hydrocarbons
(e.g. trichloroethylene), are liable to form
chromyl chloride in the pre-layer which
changes the indicating layer to a yellowish-
brown. CO determination is impossible
in the case of high olefin concentrations.
Extension of the Measuring
Using n=2, multiply the reading by 5;
the measuring range will be 10 to 300 ppm