GASTRON G-Finder Multi, Инструкция по эксплуатации

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G-Finder Multi (O
2
/ CO / H
2
S / CH
4
) Portable Multi Gas Detector
GT-07919072501 PAGE 6 of 14 Rev 1.0(2020.05.18)
When the countdown is completed, “ACK?” will
be changed to “ACK OK” on the LCD screen as
below for example, and then the alarm will be
released.
When G-Finder Multi detects gas concentration
which is over the upper limit of the detection
range, the concentration display part on the LCD
screen will be changed to “O-V” as below for
example.
7. Bump Test
1) Press the button twice to get into the menu, it
shows "BUMP TEST" on the screen.
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 bump test.
3) Then the gas applying display, the low alarm
setpoint display, and the high alarm setpoint
display occur cross and the detector waits for
applying gas which causes an alarm.
4) If the detector detects the gas concentration
of all 4 types for the bump test in 60 seconds,
the bump test process is performed
automatically. The result will be displayed on
the screen at the end of the test. If an alarm
occurs during the bump test, the test is
succeeded, otherwise the test is failed. If the
test is failed,
icons are appeared
additionally with the bump test mode display
on the screen.
8. Zeroing the Sensor
In case of O
2
sensor, over time and through use,
the sensor baseline at zero exposure may drift
from the manufacturer’s baseline.
For optimal performance of O
2
sensor, it is
recommended to zero the O
2
sensor at least once
in a month at the condition of room temperature
and in a fresh air environment (20.9% v/v O
2
) free
of hazardous gas.
The user will be noted by the display of the
calibration reminder icon when the sensor
calibration is due. If the icon is showing please
zero the sensor as instructed below:
※
For all gas types, we recommend zeroing
for the sensors periodically.
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