What you should know about analog technology
2.3 Scaling analog values
Analog value processing
18 Function Manual, 06/2014, A5E03461439-AC
Unipolar and bipolar measuring ranges
The measurement of the fill level in our example took place within a bipolar measuring
range. In addition to the positive voltage the transducer also provides negative voltage.
Because the tank volume is mapped to the range from -27648 to +27648 increments, the
measurement of the fill level takes place with twice the resolution (Δ) as in the unipolar
measuring range.
Note
Transducers
The prerequisite for a measurement within a bipolar measuring range is
that the used
transducer supports bipolar measuring ranges.
Figure 2-6 Bipolar measuring range
The measurement of the fill level in the bipolar measuring range takes place with twice the
resolution (Δ) as in the unipolar measuring range.
Figure 2-7 Unipolar measuring range
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