Aalborg PWE Digital - Manual (Page 38)

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4.3.1.c User Defined Unit Density support
Tabular entry
This function determines whether the newly entered user defined engineering unit
is a mass unit (with density) or a volumetric unit (without density). The following
selections are available: Enabled or Disabled. The default entry is Disabled.
The listed above density support selections can be set with the Up and Dn buttons
and are accepted by pressing ENT button. If density was selected, also refer to
section 4.9.8.
4.4 Submenu Flow Alarm
PWE 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 feed-
back for the user via the LCD (only for devices with LCD option) or via an optical-
ly isolated outputs.
The flow alarm has several attributes which may be configured by the user via
optional LCD/Keypad or digital communication interface. These attributes control
the conditions which cause the alarm to occur and to specify actions to be taken
when the flow rate is outside the specified conditions.
Flow Alarm conditions become true when the current flow reading is equal or
higher/lower than corresponding values of high and low flow alarm levels. Alarm
action can be assigned with preset delay interval (0-3600seconds) to activate 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 corresponding
alarm status.
4.4.1 Flow Alarm Mode Tabular entry
This function determines whether Flow Alarm is Enabled or Disabled. The follow-
ing selections are available: Enabled or Disabled. The default entry is Disabled.
UDU Use Density
Disabled
Flow Alarm Mode
Disabled