Operating Instructions OXY5500 Gas Analyzer
78 Endress+Hauser
8. Loosen the panel mount nut from the pressure sensor on the inside of the enclosure with the adjustable wrench.
Refer to Figure 83.
Figure 83. Removing the pressure sensor
9. Remove the panel nut with fingers and extract the pressure sensor from the enclosure. Leave the green sealing
washer in place.
8.6.3 Installing the pressure sensor
1. Remove the new pressure sensor from the bag and insert into the opening with the green sealing washer with
the same orientation as the one removed.
2. Secure the panel nut to the top of the pressure sensor inside the OXY5500 enclosure.
Tighten the panel nut sufficiently to avoid possible leaks from entering the analyzer enclosure.
3. Connect the pressure sensor wiring as shown in Figure 73 or Figure 74.
4. Close the OXY5500 enclosure door and secure with the hinge screws.
5. Connect the pressure sensor tubing to the pressure sensor using the Swagelok nut.
6. Connect the tubing to the T-fitting using the Swagelok nut.
7. Tighten the Swagelok nuts at both ends of the tubing until tubing is secure.
8. Close the SCS enclosure cover.
8.7 Removing and replacing the oxygen probe
Use the following instructions to remove and replace an oxygen probe on the OXY5500.
8.7.1 Tools/parts
• OXY5500 replacement oxygen probe
Refer to Spare parts → for a complete list of replaceable probe parts and part numbers.
• Adjustable Crescent wrench
• Philips screwdriver
• 5/32 in. Hex driver
• 7/16 in. Open-end wrench
• 1/2 in. Open-end wrench
8.7.2 Removing the oxygen probe
1. Purge the analyzer by allowing 99.9999% pure nitrogen flow through the system for 30 minutes.
2. Shut off gas flow to the analyzer.
3. Turn off power to the analyzer.
4. Loosen the enclosure screws and remove the clamps to open the enclosure door.
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