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D e t e c t i o n
D e t e c t i o n
When the test device is clean and dry flushing for 2 min. is sufficient. If the condition of the device is not known, or if during
a previous measurement higher values were found than are permissible according to EN 12021, flushing at 2 l/min. must
be continued. This must be done until 2 water vapour measurements, made at an interval of approx. 15 min., give identical
results within the permissible measuring accuracy range. It then can be assumed that the test device is sufficiently clean for
making measurements.
Liquid/water (droplets) can only be removed from the test device through long flushing with dry, if necessary warm air.
Observe the arrow on the detector tube. The arrow points in the flow direction of the test air; therefore, after inserting the
tube, the arrow must point away from the test device.
Each outlet of the manifold is made for a particular detector tube. The flow has been engraved above each outlet on the
blue manifold:
•
CO
0.3 l/min
2
•
CO
0.3 l/min
•
H
O
1 l/min
2
•
Oil
2.5 l/min
Figure 8: Hygro-Thermometer with gas funnel: Checking
the outlet flow with the flow meter
5.
Check the temperature and relative humidity of the
breathing with the Hygro-Thermometer. Place the cone
in one of the rubber tube holders of a 0.3 outlet. Hold the
back of Hygro- Thermometer on the cone for 1.5 minutes.
Write down the readings on the Air Analysis Form.
WatchGas BAT-1, 2, 3 Breathing Air Quality Test Kit
Full Compliance with BS EN12021
Figure 9: Connecting the gas funnel to the 0.3 outlet
10
User Manual
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