20 • Instrument Description
EAGLE 2 Operator’s Manual
Buzzer
A solid-state electronic buzzer is located on the front of the top case. It is a panel mounting
type of buzzer and is water resistant and sealed to the inside of the top case with an O-ring.
The buzzer sounds for gas alarms, malfunctions, low battery voltage, and as an indicator
during use of the EAGLE 2’s many display and adjustment options.
Battery Case & Batteries
Four C-size alkaline batteries (standard) or optional rechargeable
C-size Ni-MH batteries power the EAGLE 2. They are installed in the battery case which
is located at the rear of the bottom case. The battery case is secured to the bottom case
with a thumbscrew.
Instrument run time is dependent upon battery type. At 25°C, alkaline batteries power the
EAGLE 2 for 16 hours of non-alarm operation. Ni-MH batteries will power the EAGLE 2
for 18 hours of non-alarm operation. The current battery voltage is viewable in Display
Mode (see “Display Mode” on page 41).
When the EAGLE 2 detects low battery voltage, a low battery warning is activated. When
battery voltage is too low for operation, the EAGLE 2 sounds a dead battery alarm.
The alkaline or Ni-MH batteries can be accessed for replacement by unscrewing the
thumbscrew that secures the battery case to the bottom case and pulling the battery case
away from the bottom case. The Ni-MH batteries can be recharged by using the EAGLE 2
charger (see “Replacing or Recharging the Batteries” on page 69).
NOTE:
Use of batteries or battery chargers not specified by RKI Instruments, Inc. will
void the CSA classification and may void the warranty.
WARNING:
To prevent ignition of a hazardous atmosphere, batteries must only be
changed or charged in an area known to be nonhazardous.
Flow System
The EAGLE 2 flow system consists of the inlet fitting, hydrophobic filter, pump, internal
tubing, differential pressure (DP) switch, sensor chamber, charcoal filter, and exhaust
fitting.
Inlet Fitting
The inlet fitting is on the right front (when viewed from the front) of the bottom case. It is
a nickel plated brass quick connect fitting. It mates with either the sample hose or with the
hydrophobic probe.
Hydrophobic Filter
The hydrophobic filter is located in the bottom case above the sensors. Normally the
hydrophobic probe accessory (see “Hose and Probe” on page 21) will prevent water and
particulate contamination from entering the flow system, but if the probe is not used, the
hydrophobic filter will stop water and particulates from penetrating further into the flow
system. If it becomes dirty or water logged, replace it (see “Replacing the Hydrophobic
Pump
A diaphragm pump inside the rear of the bottom case draws the sample to the sensors. It
can draw sample from as far as 125 feet from the EAGLE 2.
CAUTION:
Sample hose lengths of more than 125 feet are not recommended for the
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