TSI Instruments 9565 Series, Operation And Service Manual

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41
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended
solutions for common problems encountered with the Model 9565. If
your symptom is not listed, or if none of the solutions solves your
problem, please contact TSI.
Table 5-1: Troubleshooting the Model 9565
Symptom Possible Causes Corrective Action
No Display Unit not turned on Switch unit on.
Low or dead batteries Replace batteries or plug
in AC adapter.
Dirty battery contacts Clean the battery
contacts.
Velocity reading
fluctuates unstable
Fluctuating flow
Reposition probe in less
turbulent flow or use
longer time constant.
No response to
keypad
Keypad locked out Unlock keypad by
pressing

keys
simultaneously.
Instrument Error
message appears
Memory is full Download data if desired,
then
DELETE ALL
memory.
Fault in instrument Factory service required
on instrument.
Probe Error
message appears
Fault in probe Factory service required
on probe.
Probe is plugged in,
but the instrument
does not recognize
it
Probe was plugged in
when the instrument was
ON
Turn instrument OFF and
then turn it back ON.
W A R N I N G !
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in Appendix A, Specifications . The pressure sensor is
protected from damage up to 7 psi (48 kPa or 360 mmHg). At higher
pressure it can burst!
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