Damping Control; Deadband Controls - Siemens SITRANS F Instruction Manual

Section 2

2.5.1 DAMPING CONTROL

FUE1010EN provides two different data output filter types, SmartSlew and Time Average. SmartSlew
(recommended) provides the best 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 instan-
taneous 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 seconds. 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 by pressing
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] press
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 CONTROLS

The FUE1010EN has two separate and independent deadband controls. One deadband control is for
energy flow rate and the other is for volume flow rate. Follow the instructions below to set each deadband
control as desired.
Use the flow [Deadband Control] menu cell 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.
NOTE: The units of the numerical entry (e.g., kGal, BTU/HR, etc.) are the same as the Display
Units for each item of energy flow or volume flow (refer to paragraph 2.6).
To edit the [Energy Deadband] control threshold setting (0.000):
To enable numeric entry press
Use the numeric keys to type in the desired setting..
To register the new value press
To edit the flow [Deadband Control] default setting (0.000):
To enable numeric entry press
three times.
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