IB-106-340
5-10
DIAGNOSTIC
ALARMS
TEST
POINTS
HEATER T/C
HEATER
O2 CELL
CALIBRATION
CALIBRATION RECOMMENDED
O2 CELL mV +
O2 CELL mv -
HEATER T/C +
HEATER T/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
22220040
Figure 5-8. Fault 8, High Heater Temp
h.
Fault 8, High Heater Temp. The HEATER
LED flashes five times, pauses for three seconds,
and repeats (Figure 5-8).
1. If the thermocouple produces a voltage in
excess of approximately 30.7 mV, the high
heater temp alarm activates.
2. The 4-20 mA signal returns to the default
value (4 or 20 mA).
3. This alarm is self-clearing. When
temperature control is restored and the
thermocouple voltage returns to the normal
range, the alarm clears.
4. If the temperature continues to rise, the next
alarm will be the high high heater temp
alarm.
Summary of Contents for Oxymitter 4000
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