Rosemount OCX 8800, Instruction Manual

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Instruction Manual
IM-106-880, Rev 2.1
April 2017
OCX 8800
9-13
HTR 02
Remove COe Sensor Assembly
1. Disconnect COe heater, thermocouple, and sensor wires from terminal
blocks. Refer to Figure 9-9.
2. Remove insulator (1, Figure 9-10).
NOTE
For easier access, you may remove two screws from base of terminal block
mounting (13) and move terminal block assembly out of the way.
3. Remove tubes (2, 3, and 4) from COe sensor assembly (5), eductor
fittings (12 and 15), and sensor housing (7).
4. Unfasten bayonet connector of COe thermocouple (8) and remove
thermocouple.
5. Loosen clamp screw of COe band heater (9) until heater rotates freely
on sensor holder (11).
Figure 9-9. COe Sensor,
Thermocouple, and Heater
Connections
-
O2
T/C O2
+
RED
-
YEL
T/C CO
+
-
CJC Sensor
T/C SB
+
- EXC
NOTE: All wires
at these terminals
are in the CJC
current loop.
-
CJC
+
COe Sensor
Assembly
2
HTR 02
1
-
2
HTR CO
1
CO REF
+
-
2
HTR SB
1
CO ACT
+
+ EXC
COe Heater Wires
COe Sensor Wires
COe Thermocouple Wires
S
e
nsor
H
o
us
in
g
T
e
rm
in
a
ls
RE
D
W
HT
BL
U
RE
D
BL
U
RE
D
W
HT
3
7
3
9
0
0
1
8