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When the test device is clean and dry flushing for 2 min. is sufficient. If the condition of 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 vapor
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 arrow on the detector tube. The arrow points in the flow direction of the test air; therefor, 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:
o CO2
0.3 l/min
o CO
0.3 l/min
o H2O
1 l/min
o Oil
2.5 l/min
▪
Break off the detector tube tips at air exit side (see fig. 8)
Figure 8: Breaking off both tips of a detector tube
▪
Put detector tube into the correct tube holder, inserting broken-off end tightly into holder side
away from test device.
▪
Break off other end of the detector tube (air entry side) and immediately insert open tube
tightly into other end of detector tube holder (close to test device). (see fig. 9).
Figure 9: Placing the detector tube in the rubber tube holder
●
WatchGas B.V.
●
●
Klaverbaan 121, 2908KD, Capelle a/d IJssel, The Netherlands
T: +31 (0) 85 0187709
●
info@watchgas.eu
●
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www.watchgas.eu
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