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Operator Manual
748223-K
June 2002
6-2 Routine Servicing and Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Model 7003M
Error code E-0 displayed
Possible cause
Power interruption, power surge or other
outside interference has occurred
Corrective Action
Press ACK. If this symptom occurs
frequently, surge-protection is
recommended.
Will not read low levels of oxygen
Possible cause
Ambient air leaking into system
Check/Test
Increase sample flow rate, block off
flow of gas in and out of flow
chamber, and not analyzer response
Corrective Action
If signal increases with test, isolate
and seal leak.
If signal does not increase, replace or
recharge sensor.
Sudden change in output for no ap-
parent reason
Possible cause
Sensor subjected to sudden change in
conditions, as when a shadow moves
and exposes the sensor to an increase
in temperature
Corrective Action
Locate sensor in an area shaded from
sunlight and away from cold or warm
drafts.
Resolution degrading with time
Possible cause
Sensor exposed to low temperatures.
Check/Test
Per Section 4-4b on page 4-8, check
current output of sensor.
If the sensor is degrading, the signal will
change in steps as the oxygen level
changes instead of changing
continuously.
Corrective Action
Relocate sensor or replace more
frequently.