Emerson Rosemount 6888C Instruction Manual page 74

In-situ combustion oxygen analyzer for use in hazardous areas

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Maintenance and service

July 2018

8.3.6

Diffusion element replacement

The diffusion element protects the cell from particles in process gases. Normally, it does

not need to be replaced, because the vee deflector protects it from particulate erosion.

In severe environments, the diffusion element may be broken or subject to excessive

erosion. Examine the element whenever removing the probe for any purpose. Replace if

damaged.

Damage to the diffusion element may become apparent during calibration. Compare

probe response with previous response. A broken diffusion element will cause an

inadequate response to calibration gas. Hex wrenches needed to remove setscrews and

socket head screws in the following procedure are available as part of a probe disassembly

kit,

Table 9-1

NOTICE

This refers to the ceramic diffusion element only.

on page 79.

Instruction Manual

00809-0100-4891

6888C

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