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Instruction Manual
IB-106-340 Rev. 3.0
December 2003
Rosemount Analytical Inc. A Division of Emerson Process Management Startup and Operation with LOI 6-7
Oxymitter 4000
6-8 OXYMITTER 4000 TEST POINTS
Refer to Figure 6-6. System test points are lo-
cated on the board below the LOI module. Test
points 1 through 6 allow you to monitor with a
multimeter: the heater thermocouple, the O
2
cell
millivolt, and the process O
2
.
a. TP1 and TP2 monitor the oxygen cell
millivolt output which equates to the per-
centage of oxygen present.
b. TP3 and TP4 monitor the heater thermo-
couple.
c. TP5 and TP6 monitor the process gas or
the calibration gas parameter.
6-9 MODEL 751 REMOTE POWERED LOOP
LCD DISPLAY (OPTIONAL)
Refer to Remote Powered Loop LCD manual for
calibration and operation.
TP1
J1
TP2
TP3
RED
YEL
GRN
ORG
TP4
TP5
TP6
37260037
Figure 6-6. Oxymitter 4000-Test Points