- 12 -
Gas Alarm Activation
When the gas concentration exceeds the alarm level, corresponding
gas concentration will blink, buzzer will sound intermittently, alarm
lamp will blink, AL1 and AL2 will appear on the LCD, backlight will
be on, and intermittent vibration will activate.
When the gas concentration falls below the alarm level, the gas
alarm will deactivate automatically (automatic reset).
Alarm Output
1
st
Alarm
2
nd
Alarm
OL Alarm
TWA Alarm
STEL Alarm
Combustible Gas
10%LEL
30%LEL
111%LEL
－
－
Oxygen
19.5vol% 18.0vol% 50.1vol%
－
－
Hydrogen Sulfide
10.0ppm
15.0ppm
150.1ppm
10.0ppm
15.0ppm
Gas T
ype
Carbon Monoxide
50ppm
150ppm
2001ppm
25ppm
300ppm
Buzzer Sound
Slow
intermittent
sound
Fast
intermittent
sound
Same as 2
nd
alarm
Same as 1
st
alarm
Same as 1
st
alarm
Alarm Lamp (3-point)
3 lamps blink
sequentially
in
5sec period
3 lamps blink
sequentially
in
0.8sec period
Same as 2
nd
alarm
Same as 1
st
alarm
Same as 1
st
alarm
LCD
AL1 appears on
corresponding
gas part
AL1 AL2
appear on
corresponding
gas part
OL appears on
corresponding
gas part
[TOO] blinks in
the lower right
corner (see the
next page)
[SOO] blinks in
the lower right
corner (see the
next page)
Vibration
Intermittent
vibration in
2.5sec period
Intermittent
vibration in
2.5sec period
Same as 2
nd
alarm
Same as 1
st
alarm
Same as 1
st
alarm
1
st
alarm:
Combustible gas
2
nd
alarm:
Combustible gas
Tap [ AIR ADJ.] button to stop buzzer sound during
alarm. However if a new alarm arises, buzzer will
sound intermittently.
NOTE
▲
- 11 -
3. Turn OFF the Power
Press the [ POWER] button to turn OFF the screen.
--> After a beep, “OFF” appears, the countdown starts 3, 2, 1, and then the LCD and the
power will be turned OFF with three beep sounds.
Gas Concentration Display
Up to four types of gas concentration will be displayed on the LCD at the same time. For
2-gas or 3-gas type model, only the target gas names and concentrations will be displayed.
(The following diagrams describe for 4-gas type models.)
•
When the gas concentration exceeds the service range
(see "
Specifications
" on page 37), "OL" will be blinking
on the concentration display.
•
If the detection failure is caused by sensor error, the
error message “E-S” will appear on the corresponding
sensor display. (See “
Error Messages
” on page 27)
MENU
<OFF>
<Gas Concentration Display>
See the chart on page 12 for the details on
concentration indicating “OL”.
NOTE
3-gas Type
2-gas Type
4-gas Type
Combustible
Gas
Oxygen
Carbon
Monoxide
Hydrogen
Sulfide
Exceeding the range of
combustible gas sensor
Blinking
Sensor error of
combustible gas
Blinking
