✩Setting of span calibration concentration (zero point stipulated in the laws for measurement and weigh- ing)
Press the CAL key in the status where the digit of the O2 analyzer main indication is flickering via the zero (air) point calibration concentration setting.
The previously set span value will now appear on the main indication.
The ‘CAL SET LED’ of the function indicating lamps will flicker.
Then, press the COMP key and the highest digit of the 02 analyzer main indication will flicker and the span value is now settable.
Press the 
keys to select a range.
When the range has been selected, set a span value in this status.
The numeric value will be incremented by pressing
the 
key.
Press the 
key and the digit to be set can be se- lected.
Press the ENT key after setting the span value. Set- ting operation is completed.
Setting of each component
O2
CAL
NO
COMP
O2
O2
ENT
O2
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