Functions in SOPAS ET
DEFOR · Supplementary Operating Instructions · 8013029 V2.0 · © SICK AG
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4.3.3
Damping
Constant damping
When “damping” has been programmed, the average value from the current measured
value and the previous measured values (floating averaging) are displayed instead of the
current measured value.
Possible uses include:
– Damping metrological measured value fluctuations (noise)
– Smoothing fluctuating measured values when only the average value is relevant
Damping is done in the Analyzer module and therefore affects all measured value displays
and outputs. It is also active during an adjustment procedure.
Dynamic damping
“Dynamic damping” serves to compensate measured value fluctuations without signifi-
cantly increasing the reaction time. Dynamic damping is automatically deactivated when
the measured value changes rapidly and strongly as against “normal” damping. This allows
“smoothing” continuous minor measured value fluctuations but rapid measured value
changes are still displayed without delay. Dynamic behavior is determined with the “Thresh-
old” parameter:
– When the measured values change only slowly, dynamic damping functions as constant
damping.
– When the difference of successive measured values is greater than the set limit,
dynamic damping is terminated automatically and remains disabled as long as the
measured values continue to change rapidly.
– Dynamic damping is active again when measured value differences are below the limit
again (which means measured values changes remain slight).
Dynamic damping also affects all measured value displays and outputs.
●
Increasing damping normally increases the reaction time (90% time) of the
gas analysis system accordingly.
●
Reducing damping can possibly increase the measurement signal “noise”
(measuring turbulence).
●
Time constant = 0 s means: No damping.
CAUTION:
Risk of incorrect adjustment
The “Measuring time, test gas” must be at least 150% of the set damping time
constant during adjustments.
▸
When damping has been reset or increased:
Check whether adjustment
settings need to be adapted.