RKI Instruments GX-82A User Manual
Page 19
Model GX-82A Instruction Manual
16
Hayward, California (510) 441-5656
ALARMS
Alarm Indications
1. Combustibles (%LEL)
If the combustible gas detected exceeds the first level alarm setting
(20% LEL for most applications), a pulsed tone will sound, the
%LEL LED will blink, and the “HC” on the display will flash.
If the combustible gas detected rises above the high alarm setting
(50% LEL for most applications), the alarm tone and LED will be
continuous. The LEL alarm may be turned off and on by the user;
see USER OPTIONS.
2. Oxygen
If the oxygen content of the air drops below the low alarm setting
(usually 19.5%), a pulsed tone will sound, the % LED will blink,
and the “O2” on the display will flash.
If the oxygen content of the air rises above the high alarm setting
(usually 23.5%), the alarm tone and LED will be continuous. The
O
2
alarm may be turned off and on by the user; see USER
OPTIONS.
3. H
2
S or CO
If the H
2
S or CO detected exceeds the alarm setting, a pulsed tone
will sound, the PPM LED above the reading will blink, and “H2S”
or “CO” on the display will flash. The toxic gas alarm may be
turned off and on by the user; see USER OPTIONS.