Aalborg PWE Digital - Manual (Page 41)

36
The listed above Flow Alarm Action Latch selections can be set with the Up and
Dn buttons and are accepted by pressing ENT button.
4.5 Submenu Temperature Alarm (*optional)
PWE with RTD option provides the user with a flexible alarm/warning system that
monitors the Fluid Temperature for conditions that fall outside configurable limits
as well as visual feedback for the user via the LCD (only for devices with LCD
option) or via an optically isolated outputs.
The temperature alarm has several attributes which may be configured by the user
via optional LCD/Keypad or digital communication interface. These attributes con-
trol the conditions which cause the alarm to occur and to specify actions to be
taken when the temperature value is outside the specified conditions. Temperature
Alarm conditions become true when the current temperature reading is equal or
higher/lower than corresponding values of high and low temperature alarm levels.
Alarm action can be assigned with preset delay interval (0-3600seconds) to acti-
vate the optically isolated output (separate for High and Low alarm). Latch Mode
control feature allows each optical output to be latched on or follow the corre-
sponding alarm status.
4.5.1 Temperature Alarm Mode Tabular entry
This function determines whether Temperature Alarm is Enabled or Disabled. The
following selections are available: Enabled or Disabled. The default entry is
Disabled.
The listed above Temperature Alarm Mode selections can be set with the Up and
Dn buttons and are accepted by pressing ENT button.
4.5.2 Low Temperature Alarm Numerical entry
The limit of required Low Temperature Alarm value can be entered in increments
of 0.1 °C from -9.9 °C to 99.9 °C.
Flow Alarm Latch
Disabled
Temp Alarm Mode
Disabled