G-Finder Multi (O
2
/ CO / H
2
S / CH
4
) Portable Multi Gas Detector
GT-07919072501
PAGE 8 of 14
Rev 1.0(2020.05.18)
Gas Type
Standard Calibration Gas
Concentration
O
2
18.0 % v/v O
2
CO
100 ppm (balance N
2
)
H
2
S
25 ppm (balance N
2
)
CH
4
50 % LEL (balance N
2
)
1)
Move to a normal atmosphere (20.9% v/v O
2
)
free of hazardous gas.
2)
Press the button twice to get into the menu.
Then, "BUMP TEST" will be displayed on the
screen. "ZERO TEST" will be displayed on the
screen by pressing the button once, and then,
"SPAN TEST" will be displayed on the screen
by pressing the button once again.
3)
Same as the zeroing procedure, the gas
calibration can be performed by two modes.
User can select to calibrate the entire gas type
at once, or select to calibrate each gas types
individually.
4)
Press the button twice to enter selecting
menu for the gas calibration when the “SPAN
TEST" is displayed on the screen. If the button
is pressed only once, it will skip to the next
menu.
5)
If you enter selecting menu for the gas
calibration by pressing the button twice when
the “SPAN TEST" is displayed on the screen,
“ALL - SPAN” is displayed first, and the display
changes to “O2 - SPAN”, “COMB - SPAN”,
“H2S - SPAN”, and “CO - SPAN” sequentially
by pressing the button.
6)
When the corresponding gas calibration menu
displays, press and hold the button until 3
seconds countdown is displayed, then keep
holding until the countdown is completed.
7)
The gas applying display and the standard
calibration gas concentration display occur
cross and the detector waits for applying
calibration gas.
8)
If G-Finder Multi detects the gas
concentration for the gas calibration, the gas
calibration process will be performed
automatically. Wait until the gas calibration
process is completed.
※
If you press the button during the gas
calibration process, the gas calibration
process will be cancelled.
9)
When the gas calibration process is
completed, "PASS" or "FAIL" appears.
