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Instruction Manual
IB-106-340 Rev. 3.0
December 2003
8-4 Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Oxymitter 4000
Table 8-1. Diagnostic/Unit Alarm Fault Definitions – Membrane Keypad Only
LED Flashes Status 4-20 mA Line Fault
Self-
Clearing
HEATER T/C 1 OPEN Dependent on position 3 of SW2* 1 NO
2 SHORTED Dependent on position 3 of SW2* 2 NO
3 REVERSED Dependent on position 3 of SW2* 3 NO
4 A/D COMM ERROR Dependent on position 3 of SW2* 4 NO
HEATER 1 OPEN Dependent on position 3 of SW2* 5 NO
2 HIGH HIGH TEMP Dependent on position 3 of SW2* 6 NO
3 HIGH CASE TEMP Dependent on position 3 of SW2* 7 YES
4 LOW TEMP Dependent on position 3 of SW2* 8 YES
5 HIGH TEMP Dependent on position 3 of SW2* 9 YES
O2 CELL 1 HIGH mV Dependent on position 3 of SW2* 10 YES
3 BAD Track O
2
11 YES
4 EEPROM CORRUPT Dependent on position 3 of SW2* 12 NO
CALIBRATION 1 INVALID SLOPE Track O
2
13 YES
2 INVALID CONSTANT Track O
2
14 YES
3 LAST CALIBRATION
FAILED
Track O
2
15 YES
** CALIBRATION RECOM-
MENDED
Track O
2
YES
*Critical alarm conditions will render the O
2
measurement as unusable, and any of these events will cause the
4-20 mA signal to go to a user-selectable limit of 3.5 mA or 21.6 mA (position 3 of SW2). Factory default value
is 3.5 mA. Alarms which are not “self-clearing” will require recycling of power to the electronics.
**The CALIBRATION RECOMMENDED alarm flashes the Calibration Recommended alarm LED on the opera-
tor’s keypad.
Table 8-2. Diagnostic/Unit Alarm Fault Definitions – LOI
Message Status
Fault
Number
Self-
Clearing
O2 T/C OPEN HEATER T/C OPEN 1 NO
O2 T/C SHORTED HEATER T/C SHORTED 2 NO
O2 T/C REVERSED HEATER T/C POLARITY REVERSED 3 NO
ADC ERROR A/D COMM ERROR 4 NO
O2 HEATER OPEN O2 HEATER OPEN 5 NO
VERY HI O2 TEMP VERY HIGH PROCESS TEMPERATURE 6 NO
BOARD TEMP HI ELECTRONICS OVERHEATED 7 YES
O2 TEMP LOW LOW PROCESS TEMPERATURE 8 YES
O2 TEMP HI HIGH PROCESS TEMPERATURE 9 YES
O2 CELL OPEN O2 CELL OPEN 10 YES
O2 CELL BAD O2 CELL FAILED 11,13, 14 YES
EEPROM CORRUPT EEPROM FAILED 12 NO
CALIB FAILED LAST CALIBRATION FAILED 15 YES
LINE FREQ ERROR INCORRECT INPUT LINE FREQUENCY
DETECTED ON POWER UP
NO