4 How to Use
4-3. How to start the gas detector
GP-1000
- 18 -
<Performing Air Calibration>
Perform air calibration at maintenance before starting work or if the zero point deviates even though fresh
air is drawn.
* Before performing air calibration, check that the surrounding air is fresh.
LCD
Display
(1) Press and hold the AIR button
in the detection mode.
[AIR]
(2) Release the AIR button when
the display changes from "AirCL -
HOLD AIR" to "AdJ - RELEASE".
(Buzzer sound: Three times <blip,
blip, blip>)
↓
↓
The zero adjustment is done and
the gas detector returns to
detection mode.
(Buzzer sound: Once <blip>)
* If air calibration fails, "FAIL
- AIR CAL" is displayed.
Press the RESET button
to reset the alarm. The gas
detector returns to the
detection mode (before
adjustment).
NOTE
Perform air calibration under pressure and temperature/humidity conditions close to those in the
operating environment and in fresh air.
Perform air calibration after the reading is stabilized.
If there is a sudden temperature change of 15
℃
or more between the storage and operation locations,
turn on the power of the gas detector, leave it for about ten minutes in a similar environment to the
operation location, and perform air calibration in fresh air before using it.