Instruction Manual
748441-D
April 2002
5-4 Maintenance and Service
Rosemount Analytical Inc. A Division of Emerson Process Management
Model CAT100
5-3 ANALYZER CONFIGURATION AND AD-
JUSTMENT
The following is a brief description of the in-
ternal hardware of the analyzer to familiarize
the maintenance technician with the location
of parts for service. It should be understood
that this is an example only, as the configura-
tion of the analyzer can depend on the install
detectors and number of channels, one or
two.
a. Component
Layout
Depending on the installed options, the
analyzer can include the following detec-
tors:
•
One Infrared Photometer
•
One 02 Sensor (paramagnetic or elec-
trochemical)
•
Two Infrared Photometer
•
One 02 Sensor (paramagnetic or elec-
trochemical) and one Infrared Photome-
ter
In addition, the following major compo-
nents may be present:
•
Gas sampling pump with a maximum
pumping rate of 2.5 l/min (not included
on two channel analyzer with parallel
gas paths). An indicator light is provided
on the front panel to show when the
pump is on.
•
Option pressure sensor (range of 800 to
1100 hPa). With the pressure sensor in-
stalled, the concentrations values com-
puted by the analyzer will be corrected
to reflect the barometric pressure to
eliminate faulty measurements due to
changes in barometric pressure.
•
An optional solenoid valve unit (not in-
cluded on two channel analyzer with
parallel gas paths).
•
For this example, there are 4 built-in so-
lenoid valves: Sample Gas, Zero Gas,
Span Gas 1, and Span Gas 2.
•
An indicator light on the front panel
shows if a solenoid valve is open.
The location of these major components
are show in Figure 5-2 through Figure
5-5.
