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INZ-TN2ZSVS-E
In addition to daily inspections, perform periodic inspections.
Item of maintenance and inspection
Maintenance and inspection procedure
Zero/span calibration
Perform zero/span calibration.
See “3.2 Zero/span calibration.”
Interval
Once/
5 days
Check of gas aspirator
1) When the flow rate does not increase to the specified value
2) Periodic replacement
Replace the diaphragm.
See “5.3.7 Replacing diaphragm.”
Once/year
5.2 Periodic inspection
5. INSPECTION AND MAINTENANCE
Name of unit
Inspection
Judgment criteria
Flow checker
Needle valve
Flow rate
check
Check that the flow rate falls within the specified
range.
If not:
1) Check that the internal capillary is not clogged
with dust, etc.
2) Replace membrane filter. See “5.3.6 Replacing
filter paper of membrane filter.”
3) Check air-tightness and repair as required. See
“5.4.1 Airtight test.”
4) Replace the diaphragm of the pump by referring
to section 5.3.7 (Replacing the diaphragm).
(1)
(2)
Judgment criteria
The ball is kept at the
center of the yellow
zone.
(0.5L/min
±
0.1L/min)
Display unit
Reading
check
When reading is lower than normal:
1) Check air-tightness and repair as required.
See “5.4.1 Airtight test.”
2) Clean within the sample cell of the analyzer
unit. See “5.3.8 Cleaning measurement cell.”
The reading is normal.
5.1 Daily inspection (Be sure to perform daily.)
(1)
(2)
