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Auto calibration abnormality:
If an abnormality occurs during auto calibration, a contact signal for auto calibration abnormality will be
output from the input/output terminals on the upper of the analyzer. The gas which incurred the abnormality
will not be calibrated, and instead the next component will be calibrated.
Note: Usually, T is set at 360 sec. for measurement including SO
2
, and at 180 sec. for other measurements.
For change of setting, refer to the separate instruction manual of infrared gas analyzer.
Example of auto calibration time chart for 4-component measurement
Zero
gas
Span
gas 1
CO
Span
gas 3
O
2
Zero
gas
Span
gas 1
Span
gas 2
Span
gas 3
Substi-
tution
NO
SO
2
O
2
Sample gas
Zero gas
Span gas 1
Span gas 1
CO
NO
Span gas 2
SO
2
Span gas 3
O
2
ZERO
SPAN
CAL
HOLD
(at HOLD ON)
Flickers
Flickers
Lights
AUTO CAL.
Gases introduced:
Indicator lamps
Auto calibration start time
Under
measurement
Under auto calibration
Auto calibration
gas flow time
T: settable from 100 to 599 sec. (Note)
Auto calibration cycle
Gas flow time
•
•
•
TTTTTTTT