Aalborg Vortex - Manual (Page 35)

c) High Temperature Alarm Numerical entry
The limit of required High Temperature Alarm value can be entered in currently
active Temperature Engineering units.
If a High Alarm occurs, and one of the two optical outputs is assigned to the High
Alarm Event (see Section 5.3.6.2) the optically isolated output will be activated
when the process Temperature is more than the High Temperature Alarm value.
The Temperature Alarm condition is also indicated on the corresponding Process
Information Screen by displaying H character.
d) Temperature Alarm Action Delay Numerical entry
The Temperature Alarm Action Delay is a time in seconds that the Temperature
reading value must remain above the high limit or below the low limit before an
alarm condition is indicated. Valid settings are in the range of 0 to 3600 seconds.
e) Temperature Alarm Action Latch Tabular entry
The Temperature Alarm Action Latch settings controls Latch feature when
optically isolated outputs are assigned to Temperature Alarm event. Following
settings are available: Disable or Enabled.
By default, Temperature alarm is non-latching. That means the alarm is indicated
only while the monitored Temperature value exceeds the specified set conditions.
If optically isolated output is assigned to the Temperature Alarm event, in some
cases, the Temperature Alarm Latch feature may be desirable.
5.3.4.3 Submenu L2 Pressure Alarm (*optional)
Vortex flow meter with T/P option provides the user with a flexible alarm/warning
system that monitors the Fluid Pressure for conditions that fall outside config-
urable limits as well as visual feedback for the user via the LCD or via an optically
isolated outputs.
The Pressure 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
pressure value is outside the specified conditions. Pressure Alarm conditions
become true when the current pressure reading is equal or higher/lower than
30
NOTE: The value of the High Temperature Alarm must be more than the
value of the Low Temperature Alarm.