Damping Control; Deadband Control - Siemens SITRANS F Operating Instructions Manual

Section 2

2.5.1 DAMPING CONTROL

System 1010 provides two different data output filter types, SmartSlew and Time Average (recom-
mended). SmartSlew provides the combination of data smoothing and quick response to sudden rate
changes. It performs data scatter damping during steady flow periods while maintaining the ability to
respond instantaneously to changing flow rates. SmartSlew values range from [1 to 9]. The default is
[6]. Pick a higher number to slow meter response to a rate change.
Time Average integrates the instantaneous flow rate over a selectable time period. You enter a value (in
seconds), which sets the time it takes the meter to respond to a rate change. The default is 10 sec-
onds. You can enter any amount of time up to 60 seconds maximum.
To edit the default SmartSlew setting:
To access the SmartSlew option list, press
Scroll the numeric list to the desired choice press
To register the new value press
To select Time Average:
To access the [Damping Control] option list press
To move the cursor down to [Time Average] by pressing
To enable [Time Average] entry press
Use the numeric keys to type the new Time Average setting.
To register the new value press

2.5.2 DEADBAND CONTROL

Use Deadband Control to instruct the meter to report zero flow if the flow rate falls below a specified
level (usually a very low rate). It will prevent the possibility of data scatter (a natural result of digital
computation) from causing false totalizer accumulation during long non-flowing periods. Inspect the
actual data scatter during zero flow conditions to find the proper deadband setting for your application.
To edit the default setting (0.000):
To enable numeric entry press
Use the numeric keys to type in the desired rate (using selected flow rate units).
To register the new value press
three times.
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1010PFM-3G