Aalborg Vortex Insertion - Manual (Page 31)

5.3.4 Submenu L1 Alarm Menu
5.3.4.1 Submenu L2 Flow Alarm
Vortex flow meter provides the user with a flexible alarm/warning system that
monitors the Fluid Flow for conditions that fall outside configurable limits as well
as visual feedback for the user via the LCD or via an optically isolated outputs.
The flow alarm has several attributes which may be configured by the user via
LCD/Keypad or digital communication interface. These attributes control the con-
ditions which cause the alarm to occur and to specify actions to be taken when the
flow rate is outside the specified conditions. Flow Alarm can be assigned to
Volumetric or Mass Flow reading.
Flow Alarm conditions become true when the current flow reading is equal or high-
er/lower than corresponding values of high and low flow alarm levels. Alarm action
can be assigned with preset delay interval (0-3600 seconds) to activate the opti-
cally isolated output (separate for High and Low alarm). Latch Mode control fea-
ture allows each optical output to be latched on or follow the corresponding alarm
status.
Following settings are available for Flow Alarm (see Figure 5.8):
a) Flow Alarm Mode Tabular entry
This function determines whether Flow Alarm is Enabled or Disabled.
The following selections are available: Enabled or Disabled. The default
entry is Disabled. Alarm Mode selections can be set with the Up and Dn
buttons and are accepted by pressing ENT button.
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