Specifications

HYDROLOGICAL SERVICES
DL3 100-017 IMP
Issue 2: 15/11/2005
River Height
Time
RvAl1
RvAl2
Trigger Alarm RvAl1
Trigger Alarm RvAl2
Hydrograph
River Alarm 1 and River Alarm 2 (RvAl1 & RvAl2)
River Alarms 1 and 2 are threshold type alarms. When the river height rises to a level as defined by
RvAl1 or RvAl2, an alarm sequence is generated sending the river message. Successive alarms of
the same type can only occur if the river height falls below the defined threshold of RvAl1 or RvAl2
and rises again to satisfy the alarm criteria or if the criteria are re-defined by user command.
The river alarms 1 and 2 can be individually disabled by entering RVAL1= or RVAL2= When
the alarm is disabled the alarm value is displayed as "--.--"
On-line Help
RVAL1?
River Alarm 1: If the river height is > RVAL1 value then an alm mesg
is generated if alm checking is en
Syntax: RVAL1<CR>Displays RVAL2 values in feet
RVAL1=007.00<CR> Sets threshold to 7
On-line Help
RVAL2?
River Alarm 2: Same alarm criteria & syntax as River alarm 1