Endress+Hauser OXY5500 - Page 77

OXY5500 Gas Analyzer Operating Instructions
Endress+Hauser 77
8.6.2 Removing the pressure sensor
1. Turn off the power to the analyzer and open the enclosure door using a standard flathead screwdriver to unlatch
the lock.
2. With a 9/16 in. wrench, loosen the Swagelok nut closest to the pressure sensor.
3. Using the same wrench, loosen the Swagelok nut on the T-fitting. Refer to Figure 80.
Figure 80. Removing the Swagelok nuts
4. Remove the tubing between the pressure sensor and T-fitting. Refer to Figure 81.
Figure 81. Removing the tubing
5. Loosen both hinge screws from the OXY5500 analyzer enclosure and open the door.
6. Disconnect the red and black wires labeled “psens-” and “psens+” from terminal block TB2 using the mini
screwdriver as shown in Figure 82.
Figure 82. Removing the wiring
7. Hold the pressure sensor using the crescent wrench to secure the hex nut on the external end.
Pressure
Sensor Nut
T-Fitting Nut