Carbon Monoxide Detection Tubes 8/a (8 - 150 ppm)

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Item #: CH19701
MFG: Draeger
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Carbon Monoxide Detection Tubes 8/a (8 - 150 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 Range8 to 150 ppm
Only for CO in H2
Number of Strokes (n)10
Time for Measurementapprox. 2 min.
Standard Deviation±10 to 15 %
Colour Changewhite ─> brown green
Temperature0 to 50° C
Absolute Humidity< 50 mg H2O / L
Reaction Principle5 CO + I2O5 ─H2S207> I2 + 5 CO2
Cross SensitivityAcetylene reacts in the same way as CO,
but with a different sensitivity.

Petroleum hydrocarbons, benzene,
halogenated hydrocarbons and hydrogen
sulphide are retained in the precleanse
layer. The capacity of the precleanse
layer may not be sufficient for high
concentrations of hydrocarbons and
halogenated hydrocarbons. When in
question, use a Drager carbon pre-tube
(CH24101) in front of the CO tube.
Practically all gasses and vapors that would
cause interference with the CO indication
(e.g. propane, butane, trichloroethylene,
perchloroethylene) are adsorbed by the
activated charcoal in the pre-tube.

Easily cleaved halogenated hydrocarbons
(e.g. trichloroethylene), in high concentrations
can form chromyl chloride in the precleanse
layer, which discolours the indicating
layer yellowish brown, the carbon pre-tube
can prevent this from happening.

It is impossible to measure CO in the
presence of high olefin concentrations.
Additional InformationThis particular tube is designed for
the measurement of carbon monoxide
in hydrogen.