GX-2009 Operator’s Manual
Operation • 27
Alarm Logic/Resetting Alarms
The gas alarm logic can be set to either latching or self resetting with the GX-2009 Setup
Program by setting the
Alarm Pattern
parameter. See the GX-2009 Setup Program
Operator’s Manual for information on how to set the alarm logic. If
Alarm Pattern
is set to
Latch
, the gas alarms are latching. If
Alarm Pattern
is set to
Reset
, the gas alarms are self-
resetting. The standard factory setting is
Latch
for latching alarms.
If the alarms are latching, then an alarm indication will continue even if the gas reading
causing the alarm decreases below the alarm setpoint (increases above for oxygen Warning)
and will continue until the alarm is reset. To be able to reset the alarm, the gas reading that
Alarm (high alarm)
Concentration of gas rises above the
Alarm setpoint
•
ALARM
flashes to the right of
the battery level icon faster than
Warning indication
• Reading for the gas in alarm
flashes faster than Warning
indication
• Alarm LEDs flash faster than
Warning indication
• Backlight turns on
• Buzzer sounds alternating
between a low and high
pitch faster than Warning
indication
• Vibrator pulses faster than
Warning indication
TWA or STEL
Concentration of CO or H
2
S rises
above the TWA or STEL alarm
point setting
•
TWA
or
STEL
flashes to the
right of the battery level icon
• The gas name in alarm flashes
• Alarm LEDs flash
• Backlight turns on
• Buzzer sounds alternating
between a low and high
pitch at the same rate as
Warning indication
• Vibrator pulses at same rate
as Warning indication
Over Range
Concentration of gas rises above
full scale
•
OVER
flashes to the right of the
battery level icon at the same
rate as Alarm indication
• Gas reading replaced by
brackets flashing at the same
rate as Alarm indication
• Alarm LEDs flash at the same
rate as Alarm indication
• Backlight turns on
• Buzzer sounds alternating
between a low and high
pitch at same rate as Alarm
indication
• Vibrator pulses at same rate
as Alarm indication
Low Battery Warning
• Battery icon blinks
None
Dead Battery Alarm
• Gas readings replaced by
FAIL
in the upper left corner of LCD
•
BATTERY
is displayed to the
right of the battery icon.
• Battery icon blinks
• LEDs flash
Buzzer pulses
Sensor Failure
• Name of failed sensor or sensors
displayed.
•
FAIL
is displayed
• LEDs flash
Buzzer sounds a double pulsing
tone
(two pulses in quick
succession)
Table 4: Alarm Types and Indications
Alarm Type
Visual Indications
Other Indications
www.calcert.com
1.800.544.2843
0
5
10
15
20
25
30
