PP Systems CIRAS-3 - Page 174

CIRAS-3 Operation Manual V. 1.09 174 support@ppsystems.com
Code
Description
What it means / Action
63
Test Mode in progress
No action required.
64
Test Passed
No action required.
65
Test Failed
No action required.
80
Cuvette % Rel Humidity > 70%
The RH% is getting high in the cuvette and we
recommend drying the air further to keep levels
below 70%.
85
CO2 Concentration Out of Range On
Stored Diff-Bal [85]
The CO
2
range is outside 10 µmol mol
-1
during
stored Diff Bal routine. Abort and try again. If
problem persists contact PP Systems.
86
H
2
O Concentration Out of Range On
Stored Diff-Bal [86]
The H
2
O range is outside 0.5 mb during stored Diff
Bal routine. Abort and try again. If problem persists
contact PP Systems.
87
Analysis/Reference Pressure Difference
> 20mb [87]
Restriction on the reference or analysis gas circuit.
Check all gas connections and look for kinks or to
see if a connection has been broken.
88
Time Out on Diff-Bal [88]
The CO2r or H2Or concentration is fluctuating too
much during DIFF BAL and the system is unable to
achieve a good fit. Perform manual Zero (Z-Diff Bal
F7) > Zero) and Diff Bal (Z-Diff Bal F7) > Diff Bal).
If you are operating in “Manual” mode for Zero and
Diff Bal, we recommend changing this to Automatic.
89
Diff-Bal (CO
2
) Out of Range [89]
The DIFF BAL value for CO2 is > 10 ppm. Typically
this is due to inaccurate recalibration or deterioration
of the internal sample cell due to dust, dirt, water. It
might just be a transient message that disappears
and if it does you are ok. If the message does not
disappear after 5-6 seconds perform a manual Diff
Bal (Z-Diff Bal F7) > Diff Bal). If problem persists
contact PP Systems. Also ensure that all desiccants
are fresh and that the absorber columns are firmly
seated in their respective manifolds.
Code
Description
What it means / Action