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Instruction Manual
IB-106-340 Rev. 2.4
April, 2001
7-18 Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Oxymitter 4000
DIAGNOSTIC
ALARMS
TEST
POINTS
HEATERT/C
HEATER
O2 CELL
CALIBRATION
CALIBRATION RECOMMENDED
O2 CELL mV +
O2 CELL mv -
HEATERT/C +
HEATERT/C -
INC INC
DEC DEC
HIGH
GAS
LOW
GAS
CAL
TEST GAS +
PROCESS -
% O2
SW2
TP1
J1
TP2
TP3
RED
YEL
GRN
ORG
TP4
TP5
TP6
ON
22220044
Figure 7-15. Fault 15, Last Calibration Failed
o. Fault 15, Last Calibration Failed
The CALIBRATION LED flashes three
times, pauses for three seconds, and re-
peats (Figure 7-15).
1. The last calibration failed alarm acti-
vates when the slope and constant
values calculated are out of range and
the unit reverts to using the previous
calibration values.
2. The cell should be replaced. See para-
graph 6-8, Cell Replacement, for cell
replacement instructions.