FuelsManager Defense
354 Administrator Manual
Tank Alarms Data
Tank Alarms Data
LEVEL ALARM - COMPOSITE LEVEL ALARM STATUS
This variable is a composite value that displays a coded variable representing the highest priority level alarms
for the tank. Possible values are Normal, High-High Low, Low-Low. FuelsManager calculates this alarm based
on the current level and the alarms limits configured for the tank
LEVEL HIHI LIMIT - CURRENT HI_HI LEVEL LIMIT
This variable is the limit for a High-High level alarm. If the tank level exceeds the HiHi Alarm value, then a High-
High alarm is activated. This variable is entered when configuring the tank point, but can be modified from
Operate by a user with sufficient privileges
LEVEL HIGH LIMIT - CURRENT HIGH LEVEL LIMIT
This variable is the limit for a High level alarm. If the tank level exceeds the High Alarm value, then a High alarm
is activated. This variable is entered when configuring the tank point, but can be modified from Operate by a user
with sufficient privileges
LEVEL LOW LIMIT - CURRENT LOW LEVEL LIMIT
This variable is the limit for a Low level alarm. If the tank level falls below the Low Alarm value, then a Low alarm
is activated. This variable is entered when configuring the tank point, but can be modified from Operate by a user
with sufficient privileges
LEVEL LOLO LIMIT - CURRENT LO-LO LEVEL LIMIT
This variable is the limit for a Low-Low level alarm. If the tank level falls below the LoLo Alarm value, then a
Low-Low alarm is activated. This variable is entered when configuring the tank point, but can be modified from
Operate by a user with sufficient privileges
LEVEL LOLO LIMIT - CURRENT LO-LO LEVEL LIMIT
This variable is the limit for a Low-Low level alarm. If the tank level falls below the LoLo Alarm value, then a
Low-Low alarm is activated
LEVEL ALARM HOLDOFF
This variable is the sometimes known as deadband or hysteresis. It is 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
holdoff is 1, the level must return to a value of 9 before the High level alarm is deactivated. This variable is
entered when configuring the tank point and cannot be modified from Operate
ETA ALARMS
Estimated Time of Arrival alarms (ETA) are intended to give the operator a warning a preset time before the
relevant level alarm is reached. This type of alarm is commonly used in facilities where the tanks are always
filled or emptied to high or low levels. Since the filling or emptying of large tanks can take days, these are alarms
are used to alert the operator that a particular tank is approaching a level where some action needs to be taken.
By default, ETA alarms disabled, they can be enabled via the Alarms tab of the tank configuration dialog box
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