3
Chapter 2
Setting-up
Supplying Power to the Model 9525 V
ELOCI
C
ALC
Air Velocity
Meter
The Model 9525 is powered with four size AA batteries.
Installing the Batteries
Install batteries by loosening the screw in the battery access cover
located on the back of the instrument. Insert four AA-size alkaline
batteries in the battery tubes according to the polarity indicated on the
instrument case under the battery access cover. Replace the battery
access cover and tighten the screw.
WARNING:
The Model 9525 is only listed for intrinsic safety when operating with
four size AA alkaline batteries. Batteries of other types (NiCd, carbon-
zinc, etc.) are
not
acceptable for use in a hazardous environment.
Using the Telescoping Probe
The telescoping probe contains the velocity sensor. When using the probe,
make sure the sensor window is fully exposed and the orientation dimple is
facing upstream.
Extending the Probe
To extend the probe, pull the black tip of the probe from the center of
the instrument. Once extended to its three-inch length, the probe can
rotate 90° to measure air from many directions.
Retracting the Probe
To retract the probe, align the sensor window so that you can view
straight through the window from the front of the instrument. Once the
window is aligned to the front, grasp the probe tip and push firmly
straight into the instrument case. Always store the probe retracted when
not in use in order to protect the sensor.
