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7. MAINTENANCE
7.1 Daily check
7.1.1 Zero calibration and span calibration
(1) It is used for zero point adjustment. For calibration, refer to 6.7.1, Zero calibration.
(2)
tion.
(3)
7.1.2 Flow check
(1)
sponce)
(2) Maintenance and check should be carried out every day, if required.
7.2 Daily check and maintenance procedures
Parts to be checked
Recorder indication
Every day
Check for purge gas
flow if purging the
sampling gas flow
instrument.
Replacement of
membrane filter
Zero point of gas
analyzer
Span point of gas
Every week
analyzer
Replacement of
membrane filter
Every year Gas analyzer
Gas analyzer output
46
Phenomena
Lower indication
(1)
(2)
Standard gas is not
withinthe range of the
specified flow rate of
0.45 to 0.35 L/min or
0.95 to 1.05 L/min
(high speed responce).
Much clogged
Out of zero point
Out of the standard
point
Irrespective of
phenomena
Irrespective of
phenomena
After overhaul.
Cause
Dust is mixed in the
(1)
Clean sampling cell
sample cell.
and check for
sampling device,
especially gas filter.
Air is sucked in
(2)
Check for leak of
anywhere in the
the sampling line
sampling tube.
and repair, if required.
Adjust the flow rate with
flow rater needle valve.
(1)
Replace primary filter.
(2)
Replace filter.
Zero calibration
Span calibration
Replace filter (paper).
Overhaul.
Instrumental error test
-
.
-
Remedy
INZ-TN6ZAF-E
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