42/24-10 EN Rev. 9 Chapter 8: Gas Analyzer Calibration 8-B-3
Calibration Data for Automatic Calibration
Menu Path MENU → Configure → Calibration data →
Automatic calibration → ...
Activation Automatic calibration is only performed when activated.
The “off” setting applies only to the interval-controlled start of automatic
calibration.
Cycle Time The cycle time shows the time intervals over which automatic calibration is to be
carried out.
Date and Time of
Next Calibration
The gas analyzer will perform the next automatic calibration at the time estab-
lished here. The cycle time will begin to run at that point.
Operating Mode Automatic calibration is based on the function block autocalibration. This function
block operates either as calibration or as validation.
Section “Validation” contains a detailed description of the validation (see page
8-B-5).
Technical Bulletin “AO2000 Function Blocks – Descriptions and Configuration”
(publication number 30/24-200 EN) contains a detailed description of the function
block autocalibration.
Test Gas
Concentration
The zero and span test gas concentrations to be used as set points for automatic
calibration need to be set for the selected sample component and measurement
range.
If the Limas11 or Uras26 analyzer module is equipped with calibration cells the
test gas concentration does not have to be set.
Components for
Calibration
The sample components to be calibrated during zero and span calibration need to
be selected.
Cancel Management Automatic calibration is always terminated when there is a system bus fault and
when the input “block” is set (for example, when the control signal “Block auto-
matic calibration” is applied).
You can configure if the automatic calibration is to be terminated when one of the
three states occurs: “system failure”, “analyzer failure” or “analyzer maintenance
request”.
You can also configure if the analysis system should repeat automatic calibration
after the cause of termination has been eliminated. Set the number of repetitions
and the time between repetitions.
The configured repetition is not effective when the automatic calibration has been
terminated by enabling the input “Cancel” of the autocalibration function block.
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