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Calibration concentration setting (when using Zirconia O
2
analyzer)
When a Zirconia O
2
analyzer is provided, set the zero (air) point and the span calibration concentra-
tion for each components of the O
2
analyzer. Refer to 3.3.3. Preparation of standard gas for the
concentration of calibration gas to be used.
• Setting of calibration concentration for zero (air) point
The zero (air) point calibration concentration is settable
for the O
2
analyzer alone. The zero point calibration
concentration for components other than for the O
2
analyzer is fixed at zero.
By pressing the FUNC key in the measuring status, the
calibration concentration previously set for the zero (air)
point will appear on the main indication.
The CAL SET LED of the function indicating lamps will
flash.
By pressing the
keys, the 2nd highest digit of the
main indication of the O
2
analyzer will flash, and zero
point setting is enabled.
Press the keys to select a range.
The numeric value will be incremented by pressing
key.
The digit to be set is selected by pressing
key.
Set the same air concentration for both high and low
range.
Press the ENT key after setting the zero point. Setting
operation is now completed.
Note: When using air for the high range and 9-10 vol % O
2
/N
2
for the low range, be sure to set the
value of concentration for each range.
O
2
O
2
O
2
O
2
FUNC
CAL SET
＞
ENT
∧
＞
O
2
