Instruction Manual
IB-106-340C Rev. 4.1
July 2004
8-8 Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Hazardous Area Oxymitter 4000
DIAGNOSTIC
ALARMS
TEST
POINTS
HEATERT/C
HEATER
O2 CELL
CALIBRATION
CALIBRATION RECOMMENDED
O2 CELL mV +
O2 CELL m -
HEATERT/C +
HEATERT/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
AlarmsADC 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
detected, the HEATER T/C LED flashes
four times, pauses for three seconds, and
repeats (Figure 8-6).
1. Cal l the factory for assistance.
LOI. When Fault 4 is detected, the LOI
displays the “ADC Error” message.
1. Cal l the factory for assistance.