254 • Leak Testing
EAGLE 2 Operator’s Manual
Performing a Demand Zero, Leak Check Mode
Before using the EAGLE 2, it is recommended to set the fresh air reading for the target gas
by performing a demand zero. This will set the CH
4
channel to zero.
1. Find a fresh-air environment. This is an environment free of toxic or combustible
gases and of normal oxygen content (20.9%).
2. Turn on the unit as described above in “Turning On the EAGLE 2, Leak Check
3. Press and hold the AIR
▲
YES button. The display prompts you to hold the AIR
▲
YES button.
4. Continue to hold the AIR
▲
YES button until the display prompts you to release it.
The EAGLE 2 will set the fresh air reading for the CH
4
channel. Start up is complete
and the unit is now ready for monitoring.
Leak Testing
In Leak Check Mode, the EAGLE 2 only displays combustible gas readings. The readings
are displayed in both numerical and bar graph form. The bar graph displays readings up to
5,000 ppm while the numerical indicator displays readings up to 50,000 ppm in the
following increments:
•
5 ppm increments from 0 ppm to 200 ppm
•
10 ppm increments from 200 ppm to 1,000 ppm
•
50 ppm increments from 1,000 ppm to 10,000 ppm
•
250 ppm increments from 10,000 ppm to 50,000 ppm
As the gas concentration increases from 0 ppm, the alarm LEDs begin to blink in unison
with the buzzer’s pulsing. The blinking/pulsing rate increases as the gas reading increases.
If desired the buzzer can be turned off in Leak Check Mode.
In a low-light environment, press and release any of the buttons to turn on the display
backlight. See “Updating the Backlight Delay Setting” on page 110 to program backlight
duration. If CONFIRMATION BEEP is turned on in the Setup Mode menu, the EAGLE 2
beeps once every 15 minutes to confirm that it’s operating.
Locating a Leak
1. Start up the EAGLE 2 as described above in “Start Up, Leak Check Mode” on
2. Move the probe tip back and forth along the area where a leak is suspected.
3. Observe the display reading. If the gas level increases, the numerical reading will
increase, the bar graph level will increase to the right, and the beeping and buzzer
pulsing frequency will increase.
4. Use the increasing and decreasing of the reading to locate the leak point.
5. To exit Leak Check Mode and return to the Mode Select Screen at any time, press and
hold the RANGE
▼
SHIFT button for 5 seconds.
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