112 ACF5000 FTIR ANALYZER SYSTEM | OI/ACF5000-EN REV. A
Configuring dry base and O
2
reference
Correcting the measurement value
The measurement gas concentrations can be converted to dry waste gas or
normal conditions. The measurement gas concentrations can also be based
on a pre-determined oxygen concentration. The correction functions are
available only when this option has been ordered and configured ex-works in
the analyzer system.
The correction functions are automatically shut off during adjustment when
no sample gas is connected. As soon as the sample gas is connected again
the correction functions are activated again (even when the adjustment is
not yet finished).
The correction functions only affect those measured values that are deter-
mined after the function has been activated. Therefore, it can take up to 30
seconds for the FTIR spectrometer to display a corrected reading.
Menu path
Menu → Configure → Component-specific → Corrections
Display
Only the enabled and configured corrections are shown in the menu. The
image shows maximum configuration.
Procedure
Parameter Explanation
Water correction
of measured values
Activates or deactivates the correction function.
O2 correction
of measured values
Activates or deactivates the correction function.
O2 reference value
[Vol%]
Enter the officially prescribed O
2
reference value in vol%.
The O
2
reference value is limited to the range of ≥ 0 vol% to < 21.00 vol%.
Display of measured value
The measuring components marked with the * symbol in the display of
measured values in HMI can be corrected. Provided at least one of the
measuring components displayed is corrected, the type of correction is
displayed in a small text box above the Menu softkey: *Dry or *O2corr. or
*Dry&O2corr.
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