40
CALIBRATION
O
2
calibration
[Zero setting]
Zero setting should be done when CO
2
and O
2
/N
2
has not been injected yet and the stable condition
(about 8 hours) of temperature/humidity inside the unit has been attained.
1.
Press the calibration key (CAL) for 5 seconds.
2.
The left digit on the digital temperature indicator blinks, and the other indicators go out.
3.
Press the calibration key (CAL) once again.
4.
The left digit on the digital CO
2
density indicator blinks, and the other indicators go out.
5.
Press the calibration key (CAL) once again.
6.
The left digit of the digital O
2
density indicator blinks, and the other indicators go out.
7.
Set 20.0 with the digit shift key ( ) and numerical value shift key ( ), then press the enter key
(ENT).
8.
The unit automatically reverts to the display mode.
[Span setting]
Span setting should be done under stable condition of temperature, humidity, CO
2
and O
2
density.
1.
Press the calibration key (CAL) for about 5 seconds.
2.
The left digit of the digital temperature indicator blinks, and the other indicators go out.
3.
Press the calibration key (CAL) once again.
4.
The left digit of the digital CO
2
density indicator blinks, and the other indicators go out.
5.
Press the calibration key (CAL) once again.
6.
The left digit of the digital O
2
density indicator blinks, and the other indicators go out.
7.
Set the present correct O
2
density with the digit shift key ( ) and numerical value shift key ( ),
then press the enter key (ENT).
8.
The unit will automatically revert to the display mode.
[Example]
For the internal O
2
density of 5.0 % (setting) and a measured value is 4.8 %.
1.
Press the calibration key (CAL) for about 5 seconds.
2.
The left digit on the digital temperature indicator blinks, and the other indicators go out.
3.
Press the calibration key (CAL) once again.
4.
The left digit on the digital CO
2
density indicator blinks, and the other indicators go out.
5.
Press the calibration key (CAL) once again.
6.
The left digit of the digital O
2
density indicator blinks, and the other indicators go out.
7.
Set the present correct O
2
density (4.8 %) with the digit shift key ( ) and numerical value shift key
( ), then press the enter key (ENT).
8.
The unit automatically reverts to the display mode.
Note:
•The calibration is applicable when the set value and present value are less than 15 % or more than 25 %
O
2
density.
•The separate calibration is needed as the low density (less than 15 %) and high density (more than
25 %) has the span calibrating value respectively.
•Always carry out the CO
2
calibration after O
2
calibrating ( [ZERO],[SPAN] ).
Summary of Contents for MCO-5M Series
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