16
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WatchGas B.V.
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Klaverbaan 121,
2908KD, Capelle a/d IJssel, The Netherlands
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T: +31 (0) 85 0187709
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6.3
CARBON MONOXIDE TUBES
The reading is obtained directly off the tube in parts per million.
NOTE: High water vapor levels can affect the accuracy of the reading (see note below).
General Information and Cautions
• The white mist appearing at the air outlet of detector tube during measurement is caused by an
emission of small droplets of sulfuric acid with the air flow. The amount is very slight. Any irritations will
not happen.
• Used detector tubes without any color change cannot be used repeatedly.
Influence of Temperature
Detector tubes can be used between 0 °C and 40 °C (32 °F and 104 °F) and up to 90 % rh (46 g/m3 at
40 °C [104 °F])
Interferences and Cross Sensitivities
No interference from:
hydrogen, methane, carbon dioxide, mineralic oil (vapor and mist).
Overall Uncertainty
Up to ± 15 % in the range above 15 ppm.
Up to ± 25 % in the range 5 ppm ... 15 ppm.
(expressed as relative standard deviation).
Storage and Transport
Up to 25 °C (77 °F) and protected from light. Expiration date: see back of package.
Safety Advice/Disposal
For tubes contents the following indications of danger apply: R: 20/21/22-35-37-43.
Safety advice S: 2
–
23-24/25-26-28 (water).
Tubes must be kept away from unauthorized persons. For disposal of tubes as waste observe the legal
regulations applicable in the individual country of use.
