Emerson Process Management IB106-340 instruction manual Fault 6, High High Heater Temp

Oxymitter 4000

	HEATER T/C
DIAGNOSTIC	HEATER	SW2
ALARMS	O2 CELL	ON
	CALIBRATION

CALIBRATION RECOMMENDED

Instruction Manual

IB-106-340 Rev. 2.4

April, 2001

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

TEST

POINTS

INC INC

HIGH LOW

GAS GAS

DEC DEC

O2 CELL mV +

O2 CELL mv - HEATER T/C + HEATER T/C -

CAL

TEST GAS + PROCESS - % O2

TP1 TP2 TP3 TP4

TP5 TP6

J1 RED YEL GRN ORG

22220037

	(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.

Figure 7-6. Fault 6, High High Heater Temp

7

Rosemount Analytical Inc. A Division of Emerson Process Management Troubleshooting 7-9