Emerson Rosemount Oxymitter DR, Reference Manual

Page: 57 / 98

WARNING
The transmitter, probe tube, and flame arrestor hub can be hot (up to 572 °F [300 °C]) in
the region of the probe heater. 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.
Procedure
1. Follow the instructions in Remove probe to remove the probe from the stack or
duct.
2. Remove the right housing cover (11, Figure 2-13 ) to uncover the probe
connections.
3. Disconnect the heater and oxygen thermocouple connectors, Figure 4-1 .
Figure 4-1: Termination Housing Connectors
A. Heater connector
B. Oxygen and thermocouple connector
4. Remove the four screws (7, Figure 2-13 ) from the probe finned housing.
You can now separate the probe and termination housing.
5. Carefully remove the CAL and REF gas silicone tubes by pulling them off the CAL and
REF gas ports. Pull the silicone tubes off the CAL and REF gas lines.
6. Loosen, but do not remove, the three screws (23) on the strut in the finned housing.
The spring tension should release as the strut moves up.
7. Grasp the wire loop and carefully slide the strut out of the probe tube ( Figure 4-2 ).
Reference Manual Maintenance and service
00809-0100-4880 October 2019
Rosemount Oxymitter DR 57