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4 Calibration Volume 3
4.5 Multi-Point Calibration
Multi-point calibration consists of at least 3 to max. 10 calibration
points. The points are connected by a straight line. This type of cal-
ibration can be performed for every continuous level measurement.
For multi-point calibration various levels have to be controlled.
Figure 4-2 Multi-Point Calibration
Multi-point calibration is carried out in four steps:
– Select operating mode multi-point calibration
– Measure background
– Record calibration points
– Check calibration
The necessary steps will be explained in detail on the following
pages and in the proper order. For more information on the individ-
ual functions please refer to Volume 3.
If a new adjustment should be required at a later date, then it suf-
fices to re-adjust the curve using one or two calibration point(s).
Typically, this is done with empty and/or full calibration.
The following functions are used:
– Adjustment of the lower calibration point (see page 3–352)
– Adjustment of the upper calibration point (see page 3–354)
However, these functions are not used for the following multi-point
calibration sequence, but only to re-adjust the entire curve with lit-
tle effort, e.g. after replacement of a source.
Select the operating mode for multi-point calibration (see
page 3–348).
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