RKI Instruments EAGLE 2 Manual - Manual (Page 216)

206 • Start Up and Normal Operation EAGLE 2 Operator’s Manual
TC sensor cable connects to the sub PCB. The sub PCB plugs into the main
PCB and is held in place with a screw/flat washer/lock washer. There are no
user serviceable parts on the TC sub PCB.
Start Up and Normal Operation
For instructions to startup and use an EAGLE 2 that includes a TC sensor,
reference “Start Up” on page 22, “Measuring Mode, Normal Operation” on
page 29, and “Measuring Mode, Alarms” on page 35. Follow these
instructions keeping the following in mind:
• The TC sensor is used to monitor combustible gases above their LEL
(lower explosive limit). When monitoring the target gas in %volume, be
aware that you may be monitoring gas levels that are potentially
explosive.
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.