Emerson Process Management OXYMITTER 4000 instruction manual Cell Replacement Kit

Hazardous Area Oxymitter 4000

Instruction Manual

IB-106-340C Rev. 4.1 July 2004

When working on this equipment on the laboratory bench, be aware that the Hazardous Area Oxymitter 4000, probe tube, and flame arrestor hub can be hot [up to 300°C (572°F)] in the region of the probe heater.

h.Cell Replacement

This paragraph covers O2 cell replacement. Do not attempt to replace the cell until all other possibilities for poor performance have been considered. If cell replacement is needed, order the cell replacement kit. See Table 11-1.

The cell replacement kit (Figure 9-9)con- tains a cell and flange assembly, corrugated seal, setscrews, socket head cap screws, and anti-seize compound. The items are carefully packaged to preserve precise surface finishes. Do not remove items from the packaging until they are ready to be used. Spanner and hex wrenches needed for this procedure are part of an available special tools kit. See Table 11-1.

PROBE TUBE

(NOT INCLUDED

IN KIT)

CALIBRATION GAS

PASSAGE

CORRUGATED	SOCKET HEAD
SEAL	CAP SCREWS

CELL AND

FLANGE

ASSEMBLY

26310016

Figure 9-9. Cell Replacement Kit

Spanner and hex wrenches needed for this procedure are part of an available special tools kit. See Table 11-1.

Use heat-resistant gloves and clothing when removing the probe. Do not at- tempt to work on these components until they have cooled to room tem- perature. Probe components can be as hot as 300°C (572°F). This can cause severe burns.

Disconnect and lock out power before working on any electrical components. There is voltage of up to 115 VAC.

Do not remove the cell unless certain it needs to be replaced. Removal may damage the cell and platinum pad. Go through the complete troubleshooting procedure to make sure the cell needs to be replaced before removing it.

1.Follow the instructions in paragraph

9-4ato remove the Hazardous Area Oxymitter 4000 from the stack or duct.

The flame arrestor and flame arrestor hub are among the critical compo- nents of this type of protection. See Safety Data Sheet 1A99078.

2.If the probe uses a snubber diffuser, use a spanner wrench to remove the flame arrestor/snubber diffuser assem- bly.

NOTE
To determine if the diffuser needs to	9
be replaced, refer to paragraph 9-2.

Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 9-15