11
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended
solutions for common problems encountered with the Alnor
RVA501/Airflow Instruments
LCA501. If your symptom is not listed, or
if none of the solutions solves your problem, please contact TSI.
Table 5-1: Troubleshooting the Alnor RVA501/Airflow
Instruments
LCA501
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.
Instrument Error
message appears
Memory is full
Download data if
desired, then DELETE
ALL memory.
Fault in instrument
Factory service
required on instrument.
WARNING!
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in
Appendix A, Specifications
.
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