FuelsManager Defense
358 Administrator Manual
PRESSURE 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 pressure alarm setpoint is 10 and the
pressure alarm holdoff is 1, the pressure must return to a value of 9 before the High pressure alarm is
deactivated. This variable is entered when configuring the tank point and cannot be modified from Operate
MOVEMENT ALARM
This variable is used to detect illegal product movements. If the tank command mode is 'Stopped' and the level
moves, in either direction, by more than the Movement High limit a 'Movement Alarm' is activated. By default the
movement alarm is based on change in product level, by editing the registry value:
HKEY_LOCAL_MACHINE\SOFTWARE\FuelsManager\DataManager\ UseNetVolumeForMvmntAlarm such that
the value equals 1. The movement alarm behavior will be based on change in Net Std. Volume, thus eliminating
false alarm caused by product temperature changes. This variable is entered when configuring the tank point
and cannot be modified from Operate
MOVEMENT HOLDOFF - MOVEMENT HOLDOFF TIME
This variable is the amount of time (in seconds) by which the level (or Net Std. volume) must exceed the
Movement alarm high limit before an alarm is activated. This variable is entered when configuring the tank point,
but can be modified from Operate by a user with sufficient privileges
REVERSE FLOW ALARM
This variable is used to detect product movements in the opposite direction to the selected tank command
mode. If the tank command mode is 'Filling' and the level falls then a 'Reverse Flow Alarm' is activated
REVERSE FLOW HOLDOFF - REVERSE FLOW HOLDOFF TIME
This variable is the amount of time (in seconds) by which the reverse flow condition must exist before an alarm
is activated. This variable is entered when configuring the tank point, but can be modified from Operate by a user
with sufficient privileges
NO FLOW ALARM
This variable is used to detect that product movement has stopped unexpectedly. If the tank command mode is
'Filling' or 'Emptying' and the flow value is zero then a No Flow Alarm' is activated
NO FLOW HOLDOFF - NO FLOW HOLDOFF TIME
This variable is the amount of time (in minutes) by which the no flow condition must exist before an alarm is
activated. This variable is entered when configuring the tank point, but can be modified from Operate by a user
with sufficient privileges
TEST MODE ALARM
This variable is used to generate an alarm if the tank command mode is selected to be 'Test'. The tank mode
can be commanded to 'Test' mode, this is used by the operator in order to disable all level alarms, typically used
during tank gauge maintenance. Enabling the Test Mode alarm ensures that an operator alarm will be generated
when the test mode is selected, thereby ensuring the mode is not selected accidentally.
LEAK RATE
This variable shows the statistically calculated rate of leakage from a specific tank
Tank Alarms Data
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