306 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Sample cell installation:
29 Push the purge gas hoses onto the connections of the sample cell and
secure by means of the clamping springs.
30 Check that the plugs 2 are seated on the sample gas tubing.
31 Insert the sample cell into the housing obliquely from above in such a
way that the sample gas tubes project through the leadthroughs to the
outside.
32 Slowly lower the sample cell initially onto the side pointing to the beam
splitter and then onto the side pointing to the measuring detector and
insert in the fixing device.
33 Clamp the purge gas hose 7 in the fixing device 8.
34 Attach the 2 mounting brackets 6 and fasten by means of the 4 screws 5
(socket-head, wrench opening 3 mm).
35 Press the 2 plugs 2 into the leadthroughs. Fix the retaining board 3 in
position with the screw 4.
36 If applicable, push the purge gas line onto the input of the flow sensor
(option) and fasten by means of the spring.
37 Lay the purge gas lines in the housing in such a way that no movable
parts, e.g. the chopper wheel, are obstructed, feed through the 2 cou-
plings 1 and fix in position.
Restarting the gas analyzer:
38 Close the system housing so that it is tight.
Light penetration during operation leads to erroneous measurement
values and overranging ("Intensity" status message).
39 Turn on the gas analyzer power supply.
40 Purge the sample gas feed path. With corrosive sample gases, purge the
entire sample gas line system with dry nitrogen.
41 Wait for the warm-up phase to end.
42 Check the zero point and end point and calibrate if necessary.
43 Start the sample gas and purge gas supply.
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