IB-106-340
5-8
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
22220038
Figure 5-6. Fault 6, High Case Temp
f.
Fault 6, High Case Temp. The HEATER LED
flashes three times, pauses for three seconds, and
repeats (Figure 5-6).
1. If the case temperature exceeds 185°F
(85°C), the temperature control will shut off
and the 4-20 mA signal output will go to the
default value.
2. This signifies that the environment where
the Oxymitter 4000 is installed exceeds the
ambient temperature requirements or that
heat due to convection is causing case tem-
perature to rise above the limit.
3. Placing a spool piece between the stack
flange and the Oxymitter 4000 flange may
eliminate this problem.
4. If a spool piece does not solve the problem,
relocation is the only solution.
Summary of Contents for Oxymitter 4000
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