42
o
o
o
o
o
Span calibration
Carry out span calibration by flowing calibration gas at
the concentration set as a span value.
Flow the calibration gas at 0.5
r
/minute.
Wait until the indication stabilizes, and then conduct span
calibration.
Press the SPAN key and the SPAN key lamp flashes.
In the case of multi-component analyzer, the main
indication will flash for the components which can be
calibrated.
Press the COMP key and the calibratable gas compo-
nent will change.
When the gas component has been determined, press
the keys to select a range.
Note: The lamp will not flash in the case of a
single-component analyzer.
After the indication is stabilized, press the CAL key
and conduct span calibration.
The CAL key lamp lights steadily during calibration.
The calibration is completed when key lamp goes off.
Since the measuring status is resumed after calibration,
continue the calibration for each component and each
range.
Density below zero point (indicated by a minus symbol) is displayed as zero.
This function is released by pressing SPAN key.
Note 1: When a zirconia O
2
meter is used and zero point is calibrated by 9-10 vol % O
2
for the low
range, the zero and span calibrations interfere with each other. Therefore, each should be
calibrated a few times repeatedly.
Note 2: After span is calibrated, change the range (2-range meter only) to check the error or indica-
tion of each range. If it is large, set S.CAL mode to “0” and calibrate the span once again.
After it is calibrated, set S.CAL to “1”.
CAL
SPAN
ZERO
ENT
CAL
SPAN
ZERO
ENT
CAL
SPAN
ZERO
ENT
Flashes
NO
NO
SPAN
NO
CAL
CAL
SPAN
ZERO
ENT
Flashes
NO
Light steadily
(In case of multi-
component analyzer)
(The lamp goes off after calibration)
COMP
（ ）
CAUTIONS
