RKI Instruments GX-86A - Manual (Page 18)

Model GX-86A Instruction Manual
RKI Instruments, Inc. Page 17
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.
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 22.5%), the alarm tone and LED will be continuous.
3. H
2
S
If the H
2
S detected exceeds the alarm setting (usually 10 ppm), a
pulsed tone will sound, the PPM LED above the H
2
S reading will
blink, and the “H2S” on the display will flash.
4. CO
If the CO detected exceeds the alarm setting (usually 25 ppm), a
pulsed tone will sound, the PPM LED above the CO reading will
blink, and the “CO” on the display will flash.