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4 Calibration with SIMATIC PDM Volume 6
4.3 Two-Point Calibration
Two-point calibration is the most frequently used type of calibra-
tion. Typically, it is used for level measurements with rod sources.
Figure 4-1 Two-point calibration
It may also be used for other applications, e.g. for point sources or
for rod detectors (see Uni-Probe User’s Manual, Volume 2).
Two-point calibration is carried out in five steps:
• Select operating mode two-point calibration
• Measure background
• Empty calibration
• Full calibration
• Check calibration
The necessary steps will be explained in detail on the following
pages and in the proper order.
Sometimes full calibration is not possible. In these cases, you may
also carry out a one-point calibration (see page 6–615).
Select the operating mode for two-point calibration (see
page 6–606).
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