G-Finder Multi (O
2
/ CO / H
2
S / CH
4
) Portable Multi Gas Detector
GT-07919072501
PAGE 12 of 14
Rev 1.0(2020.05.18)
※
Battery life decreases faster when the LCD
back-light is turned on. If you do not need
the LCD back-light, it is recommended to
save battery by turning the LIGHT mode
off.
1)
Press the button twice to get into the menu.
Then, "BUMP TEST" will be displayed on the
screen. "LIGHT MODE" will be displayed on
the screen by pressing the button six times.
(or five times in case of G-Finder Multi
without Bluetooth option)
2)
Press and hold the button until 3 seconds
countdown is displayed, then keep holding
until the countdown is completed in order to
perform the Light mode.
3)
When the countdown is completed, “LIGHT-
ON” is displayed on the screen for a while then
return to the Light mode menu.
4)
In order to turn off the Light mode, proceed
the above procedure ‘1)’.
5)
Press and hold the button until 3 seconds
countdown is displayed, then keep holding
until the countdown is completed in order to
turn off the Light mode.
6)
When the countdown is completed, “LIGHT -
OFF” is displayed on the screen for a while
then return to the Light mode menu.
14.
Detection Range
Please refer to the below table for the Detection
ranges.
Gas Type
Detection Range
O
2
0 to 25.0% Vol
with 0.1 increments
CO
0 to 300 ppm
with 1 increment
H
2
S
0 to 100 ppm
with 0.1 increments
CH
4
0 to 100% LEL
with 1 increment
15.
Detectable Combustible Gases
G-Finder Multi combustible gas sensor is
optimized for methane detection. The sensor is
able to detect and respond to the other
combustible gases shown in the table below, but
the accuracy of the measured gas concentration
values may not be consistent.
Combustible
Gas
Expected response
at 20% LEL target gas
Methane(CH
4
)
20 %LEL
Propane(C
3
H
8
)
15 ~ 45 %LEL
Butane(C
4
H
10
)
15 ~ 35 %LEL
Pentane(C
5
H
12
)
13 ~ 45 %LEL
Hexane(C
6
H
14
)
7 ~ 28 %LEL
Ethane(C
2
H
6
)
42 ~ 50 %LEL
Ethylene(C
2
H
4
)
4 ~ 5 %LEL
