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Instruction Manual
IB-106-340 Rev. 3.0
December 2003
8-8 Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Oxymitter 4000
DIAGNOSTIC
ALARMS
TEST
POINTS
HEATER T/C
HEATER
O2 CELL
CALIBRATION
CALIBRATION RECOMMENDED
O2 CELL mV +
O2 CELL m -
HEATER T/C +
HEATER T/C -
V
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
37260022
Alarms
ADC Error
LOI
KEYPAD
Figure 8-6. Fault 4, A/D Comm Error
d. Fault 4, A/D Comm Error
Membrane Keypad. When Fault 4 is de-
tected, the HEATER T/C LED flashes four
times, pauses for three seconds, and re-
peats (Figure 8-6).
1. Call the factory for assistance.
LOI. When Fault 4 is detected, the LOI dis-
plays the “ADC Error” message.
1. Call the factory for assistance.