Emerson 3000 World Class, Instruction Bulletin, Figure A-8.Ceramic Diffusion/Dust Seal Assembly

World Class 3000

Instruction Bulletin

Appendix A Rev. 3.9 May 2005

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Figure A-8. Ceramic Diffusion/Dust Seal Assembly

These modified diffusion and vee deflector assemblies are available in standard, Figure A-8, and flame arrestor version, Figure A-9.

b.Ceramic Diffusion Assembly

The ceramic diffusion assembly, Figure A-10, is the traditional design for the probe. Used for over 25 years, the ceramic diffu- sion assembly provides a greater filter sur- face area for the probe.

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Figure A-10. Ceramic Diffusion Assembly

c.Flame Arrestor Diffusion Assembly

Where a high concentration of unburned fuel is present in the exhaust gases, a flame arrestor diffusion assembly, Figure A-9 and Figure A-11 is recommended.

The flame arrestor diffusion assembly in- cludes a set of baffles between the cell and the stack gases. This keeps 1500°F (816°C) cell temperatures from igniting unburned fuel in the stack.

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Figure A-9. Flame Arrestor Diffusion/Dust	Figure A-11. Flame Arrestor Diffusion Assembly
Seal Assembly

Rosemount Analytical Inc. A Division of Emerson Process Management Appendices A-7