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CAUTION
• In case you find it difficult to judge what happened to the instrument, avoid disassembling the
instrument without consulting our sales agent or service engineers. Otherwise, it may result in
electrical shock or personal injury.
Phenomena
Sample gas
Filter
flow rate
Diaphragm gas aspirator
is low
Gas leaks
Flow checker
Tube, capillary
Indication
Gas leak
value varies
considerably.
Diaphragm aspirator
Dissolution of gas
Indication
Gas leak
differs from
the anticipated
Measuring range
one.
Zero, span
Indication is
Power supply and fuse
not deflected.
Tubing, exhaust gas inlet
Freeze-up
INZ-TN2ZSVS-E
7. TROUBLESHOOTING
Items
Check if filter is clogged.
Check if aspirator is operating
normally.
Check for abnormal sound or
vibration.
Check if there are gas leaks
somewhere in tube connecting
to aspirator or joints.
Check if drain or dust is attached to
the flow checker.
Check the tube for breakage,
or clogging.
Check the mist filter, tube, joints
connecting to aspirator for gas leaks.
Check if the aspirator is operated
normally. Check if sample gas flow
is supplied as set.
Check if drain remains in tube.
Check if there is gas leak anywhere
before the aspirator.
Check if correct range is selected.
Check zero and span using the
standard gas.
Check power supply voltage and
fuse.
Check for freeze-up in the tubing.
Check
- 79 -
Remedy
Clean or replace.
Clean aspirator or replace
diaphragm or valve.
Retighten screws or replace
aspirator.
Retighten or replace parts.
Replace parts.
Replace.
Retighten or replace parts.
• Clean the aspirator or replace
diaphragm or valve.
• Adjust the sample gas flow.
Clean or tilt tube.
Retighten or replace parts.
Switch to correct range.
Adjust zero and span correctly.
Replace fuse.
Implement heat insulation
for preventing freeze-up.
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