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Instruction Manual
760008-A
September 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-17
Model NGA 2000 TO2
b. Alarms
From the Analyzer Module Setup and
Controls menu, choose Alarms as follows:
Figure 3-18. Alarms
Move the cursor to the “Alarms…” line and
press the ↵ key. The “Alarms” menu will dis-
play as shown below.
The “Alarm delay” function on the Alarms
menu establishes the time between an ex-
ceedance and the triggering of the alarm. It is
adjustable from 0.0 to 30.0 seconds. Move
the cursor to the “Alarm delay:” line and
press the ↵ key. Adjust the value using the ↑
and ↓ keys or select the digit using the ←
and → keys.
Use the F5 (ClrAlm!) key to clear any acti-
vated alarms. This should be done only after
the signal has returned to the allowed range
to reset the alarm for new events.
Move the cursor to the “Concentration alarm
setup..” line and press the ↵ key to reach the
“Concentration Alarm Setup” menu as shown
below.
To turn alarms on or off, select the “Alarm
generation is:” line and toggle it between
“On” or “Off.”
Four alarms are available. Select any alarm
and adjust the concentration value for trig-
gering that alarm. Setting an alarm concen-
tration to 0.0 will deactivate that alarm.
The status of the alarms displays below the
line.
TO2 37.50 ppm
-- Anal
y
zer Module Setu
p
and Controls --
Calibration…
Alarms…
Ranges…
Linearization…
Measurement display configuration…
Concentration measurement…
Flow measurement…
Temperature measurement…
Measure Back…
Status…
TO2 37.50 ppm
Measure
Back…
-- Alarms --
Alarm delay: 1.0 s
Concentration alarm setup…
ClrAlm!
TO2 37.50 ppm
-- Concentration Alarm Setu
p
--
Alarm generation is:Re s…On
Level for Low-Low alarm: 0.0 ppm
Level for Low alarm: 10.0 ppm
Level for High alarm: 50.0 ppm
Level for High-High alarm: 100.0 ppm
Low-Low alarm: Off
Low alarm: On
High alarm: Off
Hi
g
h-Hi
g
h alarm: Off
Measure
Back…
Main Menu
↓
Analyzer and I/O, expert controls and setup…
↓