RKI Instruments EAGLE 2 Manual - Manual (Page 264)

254 • Start Up and Normal Operation EAGLE 2 Operator’s Manual
Start Up and Normal Operation
For instructions to startup and use an EAGLE 2 that includes an infrared
hydrocarbon sensor, reference “Start Up” on page 22, “Measuring Mode,
Normal Operation” on page 29, and “Measuring Mode, Alarms” on page 35.
0-100 %LEL/2.0-30.0 %vol Autoranging
The infrared hydrocarbon sensor can be factory set to detect gas in a 0-100
%LEL configuration or an autoranging configuration. The autoranging
configuration detects gas on a 0-100 %LEL and a 2.0-30.0 %vol scale. The
gas reading will be displayed in %LEL until the gas level reaches 100 %LEL,
or 2.0 %vol for isobutane. Once the gas reading is above 100 %LEL, it is
displayed in %vol. Alarm points exist for the %LEL range but do not exist
for the %vol range.
Catalytic (LEL) Sensor Screen
When either a TC sensor or an infrared combustible sensor is installed in an
EAGLE 2 along with a catalytic combustible LEL sensor, the user has the
option of turning off the catalytic combustible LEL sensor in Display Mode.
If the unit is going to be used for sampling known high-levels of combustible
gas or in areas with known catalytic sensor poisons such as silicone vapors,
the catalytic combustible sensor should be turned off. Even though this
sensor has its own protective shut off, exposure to high levels of combustible
gas can still stress the catalytic LEL sensor. The catalytic LEL sensor can be
enabled or disabled in the Catalytic (LEL) Sensor screen in Display Mode.
The default setting is enabled. To change the setting, do the following:
NOTE: The Catalytic (LEL) Sensor setting is reset when the EAGLE 2 is
turned off. When the EAGLE 2 is turned on, this setting is always
ENABLED.
1. Use the DISPLAY ADJUST NO button to enter Display Mode and scroll
to the Catalytic (LEL) Sensor screen. The current setting will be flashing.
2. Use the AIR ▲ YES or RANGE ▼ SHIFT button to toggle to the desired
setting.
CAT (LEL) SENSOR
ENABLED