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6-31
1020NFM-1D
Section 6
6.5.1 DAMPING CONTROL
System 1020 provides two different data output filter types, SmartSlew and Time Average (recom-
mended). SmartSlew 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 instantaneous flow rate over a selectable time period. You enter a value
(in seconds) that sets the time it takes the meter to respond to a rate change. The default is 10 sec-
onds. Enter any amount of time up to 60 seconds maximum.
To edit the default SmartSlew setting:
To access the SmartSlew option list press the <Right Arrow> three times.
Scroll the numeric list to the desired choice by pressing the <Up/Down Arrows>.
To register the new value press <ENTER>.
To select Time Average:
To access the Damping Control option list press the <Right Arrow>.
To move the cursor down to [Time Average] press <ENTER>.
To enable Time Average entry press the <Right Arrow>.
Use PC numeric keys or Keypad to enter the new Time Average setting.
To register the new value press <ENTER>.
6.5.2 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 the <Right Arrow>.
Use PC numeric keys or KeyPad to enter the desired rate (using selected flow rate units).
To register the new value press <ENTER>.
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Страница 223: ...990TNHM 8 OUTLINE DIMENSIONS TRANSDUCERS TRACKS DEDICATED HYBRID MODE 21614 C ...
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Страница 226: ...21614 C PFA DFT FLOWTUBE INSTALLATION OUTLINE 992DFTP T 8 ...
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