RKI Instruments EAGLE 2 Manual - Manual (Page 235)

EAGLE 2 Operator’s Manual Description • 225
one of the 3 sub PCB positions when an infrared CO
2
sensor is used with the
EAGLE 2. The infrared CO
2
sensor connects to the sub PCB with a 12-
position connector. 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 infrared sub PCB.
CO
2
Scrubber
A carbon dioxide scrubber is mounted to the exterior side of EAGLE 2s that
are factory-shipped with carbon dioxide sensors for the ranges of 0-5 %vol
and 0-10,000 ppm.
NOTE: EAGLE 2s with a range of 0-60 %vol CO
2
do not include a scrubber
since the normal background of CO
2
in air is negligible when
compared to the full scale of these units.
This scrubber is for use when setting the carbon dioxide sensor’s zero reading
only. Two black vinyl caps cover either end of the carbon dioxide scrubber.
To prolong the life of the scrubber, be sure the caps are installed while the
scrubber is not in use or while it is being stored. Replace the scrubber when it
turns from white to a violet color.
Figure 39: Carbon Dioxide Scrubber
End Caps