Instruction Manual
748441-D
April 2002
5-26 Maintenance and Service
Rosemount Analytical Inc. A Division of Emerson Process Management
Model CAT100
Exchange of the Sensor
1. Remove the spent sensor from the fit-
ting.
2. Remove the stopper from the new
sensor and place the new sensor into
the fitting, so that the name plate is at
the top of the sensor.
3. Close the used sensor with the stop-
per and return it to the factory imme-
diately.
Reinstalling the Sensor
Oxygen Measurement without Infrared
Channel:
1. Put the fitting with the new sensor
onto the support. Position to the stop
and fasten with the two screws (see
Figure 5-17, page 5-24).
2. Fix the sensor with a tie wrap at the
support as shown in Figure 5-17,
page 5-24.
3. Connect the cable from the sensor to
P2 of OXS PCB (see Figure 5-16,
page 5-24).
4. Insert the complete support (Figure
5-18, page 5-25) into the analyzer
and attach with the two allen screws
(see Figure 5-15, page 5-23).
5. Reconnect all gas lines to the fittings
(see Figure 5-15, page 5-23 and
Figure 5-17, page 5-24). Be careful
not to interchange gas inlets and gas
outlets.
6. Reconnect all electrical connections
between OXS and BKS, connectors
X5 and X7 (see Section 5-5a, page 5-
29).
7. Perform a leak check in accordance
with Sections 2-3 (page 2-11) and 6-2
(page 5-6) and calibrate the sensor in
accordance with Section 5-4m (page
5-27).
Oxygen Measurement combined with
Infrared Channel:
1. Put the fitting with the new sensor
onto the support. Position to the stop
and fasten with the two screws (see
Figure 5-18, page 5-25).
2. Connect the cable from the sensor to
P2 of OXS PCB (see Figure 5-16,
page 5-24).
3. Perform a leak check in accordance
with Sections 2-3 (page 2-11) and 6-2
(page 5-6).