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Maintenance and service
December 2022
5. Disconnect the signal cable from the O
6. Disconnect the heater power cable from the heater terminal blocks.
7. If moving the sensor housing to another work site, disconnect and remove
8. Remove insulation to access the mounting bolts. Unbolt the sensor housing
9. Allow the sensor housing to cool to a comfortable working temperature.
Install sensor housing
Procedure
1. Connect the test gas, reference air, eductor air, and dilution air lines to the
2. Remove the sensor housing cover.
3. If removed, install the power and signal cables and the customer power and
4. Connect the signal cable to O
244
Table 10-1: Sensor Housing Terminal Connections
Wire color
Black
Orange
White
Red
Black
Brown
Yellow
Blue
Black
Black
Orange
Yellow
Red
White
Blue
Green
the CO and CJC terminal blocks.
the power and signal cables from the sensor housing.
from the stack and take it to a clean work area.
sensor housing.
signal conduits and wiring at the sensor housing.
to the CO and CJC terminal blocks,
cable to the HTR terminal blocks.
Connects to
CJC-
CJC+
CO reference-
CO reference+
CO act-
CO act+
Exc+
O
+
2
O
-
2
Heater O
2
2
Heater O
1
2
Heater CO 2
Heater CO 1
Heater SB 2
Heater SB 1
Ground screw
and T/C terminal blocks and from
2
and thermocouple (T/C) terminal blocks and
2
Figure
10-4. Connect the heater power
Manual
00809-0500-4880
(continued)
Emerson.com/Rosemount
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