Emerson Rosemount Oxymitter 4000 Instruction Manual page 32

Oxymitter 4000
Figure 1-12. Snubber Diffusion
Assembly
Figure 1-13. Hastelloy Cup-Type
Diffusion Assembly
1-14
Snubber Diffusion Assembly
The snubber diffusion assembly, Figure 1-12, is satisfactory for most
applications. This element is also available with a flame arrestor, and with a
dust seal for use with an abrasive shield.
Cup-Type Diffusion Assembly
The cup-type diffusion assembly, Figure 1-13, is typically used in high
temperature applications where frequent diffusion element plugging is a
problem. It is available with either a 10 or 40 micron, sintered, Hastelloy
element.
This element is also available with a dust seal for use with an abrasive shield.
Abrasive Shield Assembly
The abrasive shield assembly, Figure 1-14, is a stainless steel tube that
surrounds the probe assembly. The shield protects against particle abrasion,
provides a guide for ease of insertion, and acts as a position support,
especially for longer probes. The abrasive shield assembly uses a modified
diffuser and vee deflector assembly, fitted with dual dust seal packing.
Instruction Manual
IM-106-340, Rev. 4.3
July 2017