Reference Manual
00809-0100-4004, Rev BA
August 2010
Rosemount 8800D
4-18
Trigger Level
Trigger Level is configured to reject noise within the flow range while allowing
normal amplitude variation of the vortex signal. Signals of amplitude lower
than the Trigger Level setting are filtered out. The factory setting optimizes
noise rejection in most applications. Trigger Level offers two modes for
adjustment:
• Increase filtering
• Increase sensitivity
NOTE
Do not adjust this parameter unless directed to do so by a Rosemount
Technical Support Representative.
Filter Restore
Filter Restore enables you to return all of the signal conditioning variables to
their default values. Should the filter settings get confused, select Filter
Restore to restore the default settings and provide a new starting point.
Damping
Damping function changes the response time of the flowmeter to smooth
variations in output readings caused by rapid changes in input.
The appropriate damping setting can be determined based on the necessary
response time, signal stability, and other requirements of the loop dynamics in
your system.
PV Damping
The default damping value is 2.0 seconds. Damping can be reset to any value
between 0.2 and 255 seconds when PV is a flow variable or 0.4 to 32 seconds
when PV is Process Temperature.
Flow Damping
The default damping value is 2.0 seconds. Flow Damping can be reset to any
value between 0.2 and 255 seconds.
Temperature Damping
The default damping value is 2.0 seconds. Temperature Damping can be
reset to any value between 0.4 and 32 seconds.
Field Comm. 1, 4, 3, 2, 5
Field Comm. 1, 4, 3, 3
Field Comm. 1, 4, 3, 4
Field Comm. 1, 4, 3, 4, 1
Field Comm. 1, 4, 3, 4, 2
Field Comm. 1, 4, 3, 4, 3
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