Troubleshooting
6-3
Symptom
Possible Cause
Corrective Action
TEMPERATURE
HUMIDITY PROBE
ERROR
Temperature/RH probe
was not recognized.
Detach and reconnect
probe. If problem
persists, contact TSI
technical support.
FLOW ERROR
Instrument was unable
to control flow rate (if
any tubing is connected
to particle counter).
Restart measurement.
Pressure drop across
inlet may be too large.
Lessen pressure drop
across inlet by using
larger diameter tubing,
less tubing, and/or adding
a bleed valve.
Inlet not at ambient
pressure.
Do
not
subject the unit to
other than ambient
pressure conditions.
LASER POWER /
DETECTOR WARNING
Excessive direct light is
entering the aerosol
inlet.
Remove instrument from
direct light.
Optical path blocked.
Return to factory for
service.
Nozzle is misaligned.
Fiber attached on the
nozzle tip.
Contact TSI and return to
factory.
Detector board
damaged. Laser power
is normal.
Return to factory or
factory authorized service
centers for service.
netzerotools.com
netzerotools.com
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