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O
Calibration
2
Prior to O
calibration performed, make sure internal temperature, humidity, CO
2
O
density are stabilized.
2
O
calibration should be performed prior to CO
2
1. O
zero adjustment
2
1 Press CAL
key for approx. 5 seconds.
rd
2 The top (the 3
) digit of temperature display is flashing, other digits will go off.
3 Press CAL
key again.
rd
4 The top (the 3
) digit of CO
5 Press CAL
key again.
rd
6
The top (the 3
) digit of O
7 Set "20.0" with
8 The display will automatically revert to the present temperature.
2. O
span adjustment
2
1 Press CAL
key for approx. 5 seconds.
rd
2 The top (the 3
) digit of temperature display is flashing, other digits will go off.
3 Press CAL
key again.
rd
4 The top (the 3
) digit of CO
5 Press CAL
key again.
rd
6
The top (the 3
) digit of O
7 Set the present correct O
8 The display will automatically revert to the present temperature.
Example If the internal O
measured value is 4.5,
Press
The top digit of temperature display is flashing, and other digits will go off.
Press CAL key again.
The top digit of CO
Press CAL key again.
The top digit of O
Set the displayed value at 4.5% of the actual measured value with
and
The display will automatically revert to the present temperature.
Note
When O
density is displayed less than 20.6% even if you try to input more than 20.6%, an
2
error tone will be emitted, the input data will be ignored to revert to PV display.
When O
density is displayed more than 20.6% even if you try to input less than 20.6%, also
2
an error tone will be emitted, the input data will be ignored to revert to PV display.
O
density in the atmosphere is about 20.6%.
2
density display is flashing, other digit will go off.
2
density display is flashing, other digit will go off.
2
key and
key. Press
density display is flashing, other digit will go off.
2
density display is flashing, other digit will go off.
2
density with
2
density display shows 5.0% the set value
2
CAL
key for approx. 5 seconds.
density display is flashing, other digits will go off.
2
density display is flashing, other digits will go off.
2
key, then press
ENT
calibration.
2
ENT
key.
key and
key. Press
key.
8
density and
2
ENT
key.
the actual
key
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