Emerson Rosemount 5408, Справочное руководство

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Limit
The value that will trigger the alert.
Deadband
The Deadband is a buffer zone so the alerts do not toggle on and off when the
measurement value fluctuates around the alert limit. The alert is set when the value
exceeds the alert limit. The alert is then cleared when the value falls outside the Deadband
range.
Figure C-19: High User Defined Alert
%
'
(
$
)
*
&
A. User Defined Alert
B. Time
C. High Alert ON
D. Limit
E. Deadband
F. The alert is active when the level value rises above the alert limit.
G. The alert turns off when the value falls below the deadband.
Figure C-20: Low User Defined Alert
%
'
(
$
)
*
&
A. User Defined Alert
B. Time
C. Low Alert ON
D. Deadband
E. Limit
F. The alert is active when the level value falls below the alert limit.
G. The alert turns off when the value rises above the deadband.
Reference Manual Configuration parameters
00809-0100-4408 February 2020
Rosemount 5408 and 5408:SIS Level Transmitters 273