9
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended solutions
for common problems encountered with the Model 9525. If your symptom is
not listed, or if none of the solutions solves your problem, please contact
TSI.
Table 5-1: Troubleshooting the Model 9525
Symptom
Possible Causes
Corrective Action
No display.
Unit not switched on
Switch unit on
Low or dead batteries
Replace batteries
Dirty battery contacts
Clean battery contacts
Batteries
installed
incorrectly
Check battery alignment
against illustration inside
battery cover
BAT
is blinking
Batteries are getting low
Replace batteries
Display reads “
LO
”
and the
BAT
indicator is on
Batteries are low
Replace the batteries
Dirty battery contacts
Clean the battery contacts
Velocity reading
fluctuates badly
The flow is fluctuating
Reposition the probe in a
less turbulent section of
the flow or set the
RESPONSE
switch to
SLOW
Velocity reading
blinks 2000 FPM
or 10.16 m/s
The velocity exceeds
2000 FPM or 10.16 m/s
Use an alternative
method to measure the
velocity
Sensor may be damaged
Contact TSI
Display indicates
greater than 10
FPM (0.05 m/s) in
zero flow condition
Sensor may be damaged
Contact TSI
WARNING
!
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in
.
