Filter
Top Products
Instruction Manual
IB-106-340 Rev. 2.4
April, 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 7-9
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
22220037
Figure 7-6. Fault 6, High High Heater Temp
f. Fault 6, High High Heater Temp
The HEATER LED flashes twice, pauses for
three seconds, and repeats (Figure 7-6).
1. The high high heater temp alarm will
activate when the thermocouple pro-
duces a voltage of 37.1 mV
(1652°F/900°C).
2. The triac and the temperature control
may be at fault.
3. Remove power. Allow Oxymitter 4000
to cool for five minutes. Restore power.
4. If the condition repeats, replace the
electronic assembly per paragraph 6-
5b, Electronic Assembly Replacement.
7