Reference Manual
00809-0100-4882, Rev AB
May 2019
Rosemount 5081FG
5-4
IDENTIFYING AND
CORRECTING FAULT
INDICATIONS
A fault in the operation of the Two-Wire In-Situ Oxygen Analyzer is indicated
by the faulted operation display. If no faults exist the display will indicate
NONE. Information on the current fault is found under the DIAGNOSTICS
MENU as detailed in Section 3: Startup and Operation.
The following paragraphs describe the faults, possible causes, and corrective
actions. Refer to Figure 5-4 as needed for test points and wiring information.
NOTE
Allow adequate time for the oxygen probe to reach its operating temperature
[approximately 500°C (932°F)] before investigating a fault. The SHOW
FAULTS screen of the DIAGNOSTICS menu will indicate a fault until the unit
reaches operating temperature.
NOTE
The probe uses a Type B thermocouple to measure the cell temperature. A
Type B thermocouple output table may be useful for troubleshooting.
Figure 5-4. Transmitter Terminal
Block
Summary of Contents for Rosemount 5081FG
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