Rosemount Oxymitter 5000, Instruction Manual

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Hazardous Area Oxymitter 5000
9-16
Instruction Manual
IM-106-350C, Rev 2.2
July 2008
1. Follow the instructions in "Removal and Replacement of Probe" to
remove the Hazardous Area Oxymitter 5000 from the stack or duct.
2. Separate the probe and the electronics housing per "Replacement of
Entire Electronics (with Housing)", step 2.
3. Reinstall electronics on the new probe per "Replacement of Entire
Electronics (with Housing)", steps 4 and 5.
4. Follow the instructions in "Probe Installation" in Section 2: Installation to
install the Hazardous Area Oxymitter 5000 into the stack or duct.
Heater Strut
Replacement
This paragraph covers heater strut replacement. Do not attempt to replace the
heater strut until all other possibilities for poor performance have been
considered. If heater strut replacement is needed order a replacement heater
strut. See Table 10-1.
1. Follow the instructions in "Removal and Replacement of Probe" to
remove the Hazardous Area Oxymitter 5000 from the stack or duct.
2. Remove oxygen sensing cell per "Cell Replacement", steps 1 through 5.
3. Remove four screws (22, Figure 9-3) and washers (21) from probe tube
assembly (23). Remove the probe tube assembly from housing (11).
4. Once the probe and housing are separated, spring tension releases,
and heater strut assembly (36) moves up. Remove strut pressure clamp
(39).
5. Disconnect the heater and signal wire connectors from the mating
connectors on heater strut assembly (36).
6. Remove tube clamps (37). Carefully pull the CAL and REF gas silicon
tubes (38) from the CAL and REF gas ports.
7. Remove gas port fittings (29) from the CAL, REF, and VENT ports.
When working on this equipment on the laboratory bench, be aware that the Hazardous
Area Oxymitter 5000, probe tube, and flame arrestor hub can be hot [up to 300°C (572°F)]
in the region of the probe heater.
Use heat resistant gloves and clothing when removing probe. Do not attempt to work on the
probe until it has cooled to room temperature. The probe can be as hot as 300°C (572°F).
This can cause severe burns.
Do not force the probe housing when installing or removing from the integral electrical
barrier/feed-through (Figure 9-3). Damage to the aluminum probe housing can occur.