GX-2012 Operator’s Manual
Measuring Mode, Alarms • 39
Resetting and Silencing Alarms
You can set the GX-2012’s gas alarms as latching or self-resetting alarms (see “Updating
the Alarm Latching Setting” on page 108) and the buzzer operation as silenceable or not
silenceable (see “Updating the Alarm Silence Setting” on page 109).
•
Self-resetting alarms (
LATCHING
set to OFF)
Self-resetting alarms automatically shut off and reset when the gas reading falls below
(or rises above for an oxygen low alarm) the alarm setting. You cannot silence or reset
self-resetting alarms.
•
Latching alarms (
LATCHING
set to ON)
You can set latching alarms with or without Alarm Silence (see “Updating the Alarm
Silence Setting” on page 109).
With ALRM SLNC ON and LATCHING ON:
When the GX-2012 goes into a gas alarm, press the RESET SILENCE button to silence
the buzzer. If the gas concentration was still above the alarm level when the button was
pressed, the LEDs continue to flash, and the GX-2012 continues to display the current
alarm level.
The gas reading must fall below (or rise above for an oxygen low alarm) the low alarm
setting before you can reset the alarm. Press the RESET SILENCE button to reset the
alarm. The LEDs turn off and the GX-2012 alarm indications on the display turn off.
Clock Failure*
• FAIL CLOCK appears
on the display
• Alarm LED arrays
flash
Buzzer sounds a double
pulsing tone (two pulses
in quick succession)
System Failure*
• FAIL SYSTEM
appears on the
display
• Alarm LED arrays
flash
• Buzzer sounds a
double pulsing tone
(two pulses in quick
succession)
• A failure code appears
Microprocessor
Failure*
• NOTE: The unit will
not operate if this
alarm occurs.
• Heart indicator is
steadily on or not on
at all
• None
*
This alarm can also occur in Bar Hole Mode
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
