Alarm
Type
Level Latch Display Audible Visual
(RED LED's)
LEL Hi - Dis Hi 1 beep
per second
4 - slow
flashing
LEL HiHi 20% Y HiHi Continuous
warble
Alternate pairs
flashing
O
2
HiHi 23% Y HiHi Continuous
warble
Alternate pairs
flashing
O
2
Lo - Dis Lo 1 beep
per second
4 - slow
flashing
O
2
LoLo 19.5% Y LoLo Continuous
warble
Alternate pairs
flashing
H
2
S Hi - Dis Hi 1 beep
per second
4 - slow
flashing
H
2
S HiHi 15ppm Y HiHi Continuous
warble
Alternate pairs
flashing
H
2
S STEL 10ppm N STEL 1 beep
per second
4 - slow
flashing
H
2
S LTEL 5ppm N LTEL 1 beep
per second
4 - slow
flashing
CO Hi - Dis Hi 1 beep
per second
4 - slow
flashing
CO HiHi 300ppm Y HiHi Continuous
warble
Alternate pairs
flashing
CO STEL 200ppm N STEL 1 beep
per second
4 - slow
flashing
CO LTEL 35ppm N LTEL 1 beep
per second
4 - slow
flashing
CO
2
Hi - Dis Hi 1 beep
per second
4 - slow
flashing
CO
2
HiHi 2.5% Y HiHi Continuous
warble
Alternate pairs
flashing
CO
2
STEL 1.5% N STEL 1 beep
per second
4 - slow
flashing
CO
2
LTEL 0.5% N LTEL 1 beep
per second
4 - slow
flashing
Fig. 4-2 Alarm Indication