TSI Instruments 4043 - 5 Troubleshooting

11
Chapter 5
Troubleshooting
Symptom
Possible Causes
Corrective Action
No display.
Unit not switched on.
Switch on the unit.
No power to
instrument.
Plug in AC adapter or
check power source on
mini-DIN connector.
Temperature
reads high at
low or zero
flows.
Temperature sensor is
being heated from the
flow sensor.
This is normal. Once
flow exceeds 1 Std
L/min, the temperature
will track the flowing gas
temperature.
Flow readings
fluctuate badly.
The flow is fluctuating.
Improve inlet conditions
or increase display
averaging time.
Display shows
flows over-range
with no flow
passing through
flow tube.
The sensor may be
damaged or broken.
Return flowmeter to TSI
for service.
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