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Maintenance and service
April 2022
4.6
Replace entire probe (excluding electronics)
Do not attempt to replace the probe until you have eliminated all other possibilities for
poor performance.
If you need to replace the probe, see
Refer to
items in that figure.
Procedure
1. Follow the instructions in
2. Remove the right housing cover (11) to uncover the probe connections.
3. Remove screws (12) and unplug adapter board (13) from termination housing (14).
4. Remove the four screws (7) from the probe finned housing.
5. Place the connectors from the probe through the hole in the flat side of the
6. Install the four screws (7) and tighten.
7. Align pins of adapter board (13) with mating connectors in termination housing
8. Plug the two wire heater power connector from the probe into the mating
9. Plug the four wire oxygen and thermocouple signal connector from the probe into
10. Replace the housing cover (20) and ensure it is tight.
11. Follow the instructions in
4.7
Replace heater strut
Do not attempt to replace the heater strut until you have considered all other possibilities
for poor performance.
If you need to replace the heater strut, order a replacement heater strut (see
parts).
WARNING
The probe can be as hot as 800 °F (427 °C). This can cause severe burns.
Wear heat resistant gloves and clothing when removing probe.
Do not attempt to work on the probe until it has cooled to room temperature.
50
Figure
2-10. The numbers in the steps below correspond to the numbers of the
or duct.
You can now separate the probe and termination housing.
termination housing.
Make sure that the O-ring (10) is in good condition and that the conduit port of the
termination housing is on the same side as the CAL and REF gas ports.
(14). Plug adapter board into termination housing and secure with three screws.
connector on the adapter board (13).
the mating connector on adapter board.
duct.
Replacement parts
for part numbers.
Remove probe
to remove the transmitter from the stack
Replace probe
to install the transmitter into the stack or
Reference Manual
00809-0100-4884
Replacement
Emerson.com/Rosemount
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