Emerson Process Management OXYMITTER 4000 - Manual (Page 40)

Instruction Manual
IB-106-340C Rev. 4.1
July 2004
1-10 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Hazardous Area Oxymitter 4000
1-6 PROBE OPTIONS
a. Flame Arrestor Ceramic Diffusion
Assembly
The flame arrestor ceramic diffusion as-
sembly, Figure 1-9, includes a set of baffles
between the cell and the stack gases. This
keeps 816°C (1500°F) cell temperatures
from igniting unburned fuel in the stack. The
ceramic diffusion assembly is also available
with a dust seal for use with the abrasive
shield assembly.
36220005
Figure 1-9. Flame Arrestor Ceramic Diffusion
Assembly
36220006
Figure 1-10. Flame Arrestor Snubber Diffusion
Assembly
b. Flame Arrestor Snubber Diffusion
Assembly
The flame arrestor snubber diffusion as-
sembly, Figure 1-10, is satisfactory for most
applications. This element is also available
with a dust seal for use with an abrasive
shield.
c. Abrasive Shield Assembly
The abrasive shield assembly, Figure 1-11,
is a stainless-steel tube that surrounds the
probe assembly. The shield protects against
particle abrasion and condensations,
provides a guide for ease of insertion, and
acts as a position support, especially for
longer probes. The abrasive shield
assembly uses a modified diffusor and vee
deflector assembly, fitted with dual dust seal
packing.