23
CO
2
Calibration [CO
2
CAL]
If the displayed CO
2
measurement value is abnormal, the deviation can be calibrated with CO
2
calibration. Prepare CO
2
standard
gas (15 to 90% CO
2
) with a random concentration. Set the concentration in the PACK LEADER and calibrate.
Ideally, the calibration should be performed when the CO
2
sensor temperature is sufficiently stable in the measurement
environment.
1.
When the Measurement Standby screen is displayed, press
.
The MENU screen opens.
Immediately after opening, “CAL” is selected (flashes).
2.
Press
twice.
The cursor moves, and “FUNC” is selected (flashes).
3.
Press
.
The FUNC MENU screen opens.
Immediately after opening, “CLOG CHECK” is selected
(flashes).
4.
Press
four times.
The cursor moves, and “CO
2
FUNC” is selected (flashes).
5.
Press
.
The CO
2
FUNC MENU screen opens.
Immediately after opening, “CO
2
OFF” is selected
(flashes).
6.
Press
twice.
The cursor moves, and “CO
2
CAL” is selected (flashes).
7.
Press
.
The CO
2
CAL screen opens. The factory default setting is
80.0% CO
2
.
* If CO
2
calibration has been performed even once, the
previous setting value will be displayed.
