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Fig. 9: oxygen gauge
If the pressure is remarkably lower than 1.5 bar (22 psi) then
– Check the pressure of the oxygen bottle.
– Check the pressure regulator of the oxygen bottle
– Do leakage check. See chapter Leak Checking
3.4.2 85BNo flow
If this message permanently remains in the “status window”, check the flow on the
lower flow meter (Rotameter). The ball has to be in the range of 180 L/h. If it is in
this range, then click on the “device state” window icon.
Fig. 10: device state window icon
Check the graph for L/h. (See software helps). If the vertical bar is not in the middle
of the base line then calibrate the flow in the software as follows.
3.4.3
86BPre-purging
If this message permanently remains in the “status window”, click the icon of the
“configuration window”.
Fig. 11: icon configuration window
The duration of pre-purging is possibly entered much too long. Reasonable values
are between 1 and 5 seconds, maximum 10 sec for very low carbon analysis.
3.4.4
87BWaiting for stability
If this message permanently remains in the “status window”, the infrared cell base
lines are not stable or out of range.Click the Base line Icon and check.
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