Figure 5-14. Fault 14, Invalid Constant - Emerson Oxymitter 5000 Instruction Manual

Instruction Manual
IB-106-350 Rev. 1.2
April 2001
DIAGNOSTIC
ALARMS
CALIBRATION RECOMMENDED
TEST
POINTS
INC INC
HIGH LOW
GAS GAS
DEC DEC

Figure 5-14. Fault 14, Invalid Constant

5-16 Troubleshooting
HEATER T/C
HEATER SW2
O2 CELL
CALIBRATION
J1
O2 CELL mV +
TP1
O2 CELL mv -
TP2
HEATER T/C +
TP3
HEATER T/C -
TP4
CAL
TEST GAS + TP5
PROCESS -
TP6
% O2
28550026
n. Fault 14, Invalid Constant
The CALIBRATION LED flashes twice,
pauses for three seconds, and repeats (Fig-
ure 5-14).
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 4-2, Cali-
bration, and verify the last calibration
was performed correctly.
3. Power down the Oxymitter 5000 and
remove it from the stack.
4. Replace the cell per paragraph 4-8,
Cell Replacement.
Rosemount Analytical Inc. A Division of Emerson Process Management
Oxymitter 5000