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Instruction Manual
IB-106-340 Rev. 2.4
April, 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 7-17
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
22220045
Figure 7-14. Fault 14, Invalid Constant
n. Fault 14, Invalid Constant
The CALIBRATION LED flashes twice,
pauses for three seconds, and repeats
(Figure 7-14).
1. After a calibration has been performed,
the electronics calculates a cell con-
stant value.
2. If the cell constant value is outside of
the range, -4 mV to 10 mV, the alarm
will activate. See paragraph 6-2, Cali-
bration, and verify the last calibration
was performed correctly.
3. Power down the Oxymitter 4000 and
remove it from the stack.
4. Replace the cell per paragraph 6-8,
Cell Replacement.
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