TSI Instruments 9555 Series, Operation And Service Manual, Page: 7 / 22

3
Chapter 2
Setting-up
Supplying Power to the Model 9555 Series
The Model 9555 V
ELOCI
C
ALC
Air Velocity Meter can be powered in one of
two ways: four size AA batteries or the AC adapter.
Installing the Batteries
Insert four AA batteries as indicated by the diagram located on the
inside of the battery compartment. The Model 9555 is designed to
operate with either alkaline or NiMH rechargeable batteries. Battery life
will be shorter if NiMH batteries are used. If NiMH batteries are used
the DIP switch will need to be changed. Refer to Appendix B,
DIP
Switch Settings . Carbon-zinc batteries are not recommended because of
the danger of battery acid leakage.
Using the AC Adapter
When using the AC adapter, the batteries (if installed) will be bypassed.
Be sure to provide the correct voltage and frequency, which is marked
on the back of the AC adapter.
Using The Telescoping Probe
The telescoping probe contains the velocity, temperature, and humidity
sensors. When using the probe, make sure the sensor window is fully
exposed and the orientation dimple is facing upstream.
NOTE : For temperature and humidity measurements, make sure that at
least 3 inches (7.5 cm) of the probe is in the flow to allow the temperature
and humidity sensors to be in the air stream.
Extending The Probe
To extend the probe, hold the handle in one hand while pulling on the
probe tip with the other hand. Do not hold the cable while extending the
probe as this prevents the probe from extending.
Retracting The Probe
To retract the probe, hold the handle in one hand while gently pushing
on the probe tip with the other hand. If you feel the probe antenna
binding, pull gently on the probe cable until the smallest antenna section
is retracted. Collapse the rest of the antenna by pressing the probe tip.