Emerson Rosemount Oxymitter 4000, Reference Manual, Page: 171 / 198

Do not get any cement on upper part of ceramic diffusion element. Ensure
complete penetration of cement around three grooves in hub. Cement should
extrude from opposite hole.
10. Wipe excess material back into holes and wipe top fillet of cement to form a
uniform fillet.
A cotton swab is useful for this.
11. Clean any excess cement from hub with water.
12. Allow filter to dry at room temperature overnight or one to two hours at 200 °F (93
°C).
13. Wipe a heavy layer of anti-seize compound onto the threads and mating surfaces of
the flame arrestor, diffusion hub, and probe tube.
14. On systems equipped with abrasive shield, install dust seal gaskets with joints 180 °
apart.
15. Reinstall vee deflector, orienting apex towards gas flow.
16. Apply anti-seize compound to set-screws and tighten with hex wrench.
17. Reinstall probe on stack flange.
9.3.11 Replace contact and thermocouple assembly
See Figure 9-9 .
Figure 9-9: Contact and Thermocouple Assembly Replacement
A. Strut
B. Contact and thermocouple assembly
C. Spring
D. Spring clip
E. Tube support
Procedure
1. Remove the cell per Replace cell , steps Step 1 through Step 10 .
2. Remove the heater strut assembly, per Replace heater strut , steps Step 3 through
Step 8 .
Reference Manual Maintenance and service
00809-0100-4340 October 2019
Rosemount Oxymitter 4000 171