G-Finder Multi (O
2
/ CO / H
2
S / CH
4
) Portable Multi Gas Detector
GT-07919072501
PAGE 7 of 14
Rev 1.0(2020.05.18)
screen. And “ZERO TEST" is displayed on the
screen by pressing the button once again.
3)
Zero can be performed one of two modes by
selection. User can select to calibrate the
entire gas type at once, or select to calibrate
each gas types individually.
4)
Press the button twice in order to enter
selecting menu for the zeroing when the
“ZERO TEST" is displayed on the screen.
Otherwise, press the button once to the next
menu, Gas Calibration Menu.
5)
If you enter selecting menu for the zeroing by
pressing the button twice when the “ZERO
TEST" is displayed on the screen, “ALL - ZERO”
is displayed first, and the display changes to
“O2 - ZERO”, “COMB - ZERO”, “H2S - ZERO”,
and “CO - ZERO” sequentially by pressing the
button.
6)
When the corresponding zero calibration
menu is displayed, press and hold the button
until 3 seconds countdown is displayed, then
keep holding until the countdown is
completed in order to perform the selected
zero calibration.
7)
Then, the zeroing process will be performed
automatically. Wait until the zeroing process is
completed.
8)
When the zeroing process is completed,
"PASS" or "FAIL" appears.
9)
After displaying the result, "ZERO TEST" is
displayed on the screen again automatically.
10)
If "FAIL" appears, repeat the zeroing process
according to the procedure above.
11)
If the zeroing process fails again, please
contact our service center.
12)
In order to calibrate gas, press the button
once, and "SPAN TEST" will be displayed on
the screen. Continue calibrating according to
the "Gas Calibration" section.
13)
Or in order to exit the menu, press the button
repeatedly to go back to normal operating
mode.
9.
Gas Calibration
For more optimal performance of G-Finder Multi,
gas calibration may be needed. In order to
calibrate the detector, we recommend gas
calibration after doing zero calibration at room
temperature and in a fresh air environment
(20.9% v/v O
2
) that is free of hazardous gas.
By default, G-Finder Multi is configured to use the
following calibration gas mixtures:
