Instruction Manual
748441-D
April 2002
5-2 Maintenance and Service
Rosemount Analytical Inc. A Division of Emerson Process Management
Model CAT100
Glass Window
Extender Housing
O-Ring
O-Ring
Retaining Ring
Base
Dome Housing
5-2 COMPONENT REMOVAL
DANGER
.
POSSIBLE EXPLOSION HAZARD
If explosive or hazardous gas samples are
being measured with the CAT 100, it is rec-
ommended that the system be purged with
air or inert gas such as nitrogen before
opening the explosion proof housing.
Failure to purge the housing before open-
ing could result in an explosion.
WARNING
.
ELECTRICAL SHOCK HAZARD
Disconnect power from the CAT 100 before
opening and removing any components.
Failure to remove power can result in elec-
trical shock.
The CAT 100 explosion proof enclosure is
comprised of three major sections; the base,
the extender housing and the dome housing.
These are shown in Figure 5-1 (page 5-2).
The three sections are threaded together. To
remove, turn counterclockwise and to replace
turn clockwise. Use an anti-seizing compound
on the threads when required.
Figure 5-1. CAT 100 Enclosure Assembly
