Creating and editing tank points
ADM003GVAE1005 115
STATE COLUMN This column displays the current status of all available tank
alarms. In addition by clicking on the appropriate cell in this
column the user can change the state of the alarms.
Available states are:
Disabled - Alarm limits are not cleared but no alarms of this
type will be activated.
Enabled - Alarm limits are shown and alarms are processed
by FuelsManager.
None - Alarm limits are cleared and no alarms of this type
will be activated
HIGH-HIGH
COLUMN
This column displays the current High-High alarm limit. In
addition, by clicking on the appropriate cell in this column
the user can change the High-High alarm limit. High-High
alarm limits are available for Level and Temperature
process variables only
HIGH COLUMN This column displays the current High alarm limit. In
addition, by clicking on the appropriate cell in this column
the user can change the High alarm limit. High alarm limits
are available for Level, Temperature, Density, Flow, Level
Rate, and Vapor Pressure process variables. Also the High
limit is available for the Movement alarm, in this case the
High limit value defines how much the tank level / volume
has to move before an illegal movement alarm is activated
LOW COLUMN This column displays the current Low alarm limit. In
addition, by clicking on the appropriate cell in this column
the user can change the Low alarm limit. Low alarm limits
are available for Level, Temperature, Density, Flow, Level
Rate, and Vapor Pressure process variables
LOW-LOW
COLUMN
This column displays the current Low-Low alarm limit. In
addition, by clicking on the appropriate cell in this column
the user can change the Low-Low alarm limit. Low-Low
alarm limits are available for Level and Temperature
process variables only
HOLDOFF
COLUMN
This column displays the current alarm hold off value
(sometimes called deadband or hysteresis). In addition, by
clicking on the appropriate cell in this column the user can
change the Hold off alarm value. This value defines the
amount by which the alarm limit must be cleared before the
alarm is deactivated. For example, if the High level alarm
setpoint is 10 and the level alarm hold off is 1, the level
must return to a value of 9 before the High level alarm is
deactivated. Hold off parameters are available for Level,
Temperature, Density, Flow, Level Rate, and Vapor
Pressure process variables. Also, a time hold off value is
available for the Movement, Reverse Flow and No Flow
alarms
Edit Tank Data dialog box - Alarms tab
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