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Parameter
Meaning
Filter time constant
df
For adapting the digital input filter.
At a signal step, 63% of the changes are registered after the filter time
constant has elapsed.
Values between 0.1 and 0.7 are interpreted as 0.8 (sampling time).
If the filter time constant is long:
- high damping of interference signals
- slow reaction of the process value display to process value changes
Return to the first parameter SP of the parameter level by pressing
Value range
from...factory-set...to
0.0 ... 0�8 ... 99.9 s
> 3 sec.
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