Controller / User Interface | 4-57
Alarm Settings
Defines the parameters for the concentration alarms that are displayed
on the Status tab.
Concentration Alarm 1 is user defined.
Concentration Alarm 2 is for concentration alarms.
These are both for concentration alarms and both are user defined.
Result Assignment Defines a species for each concentration
alarm.
If N/A is selected, the Concentration 1
and Concentration 2 relays are used for
Stream A and Stream B, respectively. These
relays (whether used for Concentration 1/2
or Stream A/B) and their status are dis-
played on the Status tab.
Assignments will vary, depending on the
analyzer and application.
On-threshold The value at which the Concentration Alarm
will be triggered on.
Off-threshold The value at which the Concentration
Alarm will be reset, unless Enable latching
is checked (enabled).
Time delay(sec) The duration (seconds), that the Concentra-
tion Alarm will be delayed before it is trig-
gered.
Enable latching check box
Checked The activated warning relay will latch (will
not clear) until you disable the concentra-
tion alarms by clicking the Conc. Alarm Soft
Enable On/Off button on the Status tab.
Not Checked The relay will automatically return to its non-
alarm state once the concentration falls below
the concentration Off-threshold value.
Enable latching of fail alarm check box
Checked The activated fault alarm relay will latch
(will not clear) until you disable the concen-
tration alarms by clicking the Conc. Alarm
Soft Enable On/Off button on the Status tab.
Not Checked The fault alarm relay will automatically
return to its non-alarm state once the fault
condition has been corrected.
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