Emerson ROSEMOUNT OCX 8800 - Manual (Page 66)

Instruction Manual
IM-106-880, Rev 1.0
January 2007
OCX 8800
6-4
Install Sensor Housing
1. Connect the test gas, reference air, eductor air, and dilution air lines to
the sensor housing.
2. Remove the sensor housing cover.
3. If removed, install the power and signal cables and the customer power
and signal conduits and wiring at the sensor housing.
4. Connect the signal cable to O
2
and T/C terminal blocks and to the CO
and CJC terminal blocks, Figure 6-2. Connect the heater power cable to
the HTR terminal blocks.
5. Refer to Figure 6-1 and make sure all test gas lines and electrical
connectors are complete.
6. Install the sensor housing cover.
7. Restore power to the system. Allow OCX to reach normal operating
temperature before installing in a hot process stack.
8. Insert and bolt the sensor housing in the stack and install insulation.
9. Turn on the test gases at the cylinders and open the instrument air
supply valve.
Remove Remote Electronics Housing
1. Turn off power to the system.
2. Shut off the test gases at the cylinders and close the instrument air
supply valve, Figure 6-1.
3. Disconnect the test gas and instrument air lines from the remote
electronics housing.
4. Remove the cover from the electronics housing to expose the
electronics housing terminal blocks, Figure 6-3.
5. Disconnect and remove the power leads from the AC power input
terminal block. Remove the ground lead from the ground stud.
6. Disconnect and remove the O
2
and COe signal leads from the 4-20 mA
signal output terminal block.
7. If used, disconnect and remove the external relay leads from the alarm
output relay terminal block.
8. Disconnect the signal cable leads from O
2
cell and thermocouple
connector (J4), and from COe and CJC connector (J5), Figure 6-4.
9. Disconnect the heater cable leads from the heater power connector
(J3).
10. If moving the electronics housing to another work site, disconnect and
remove the power and signal cables and customer wiring conduits from
the housing.
11. Remove the remote electronics housing from its mounting and move it
to a suitable work area.