pH simulation when preamplifier is in sensor
The preamplifier in the sensor simply converts the high impedance signal into a low
impedance signal without amplifying it.
8.1.8 Factory assistance and repairs
Troubleshooting assistance
For assistance in correcting transmitter, sensor, and measurement problems...
• In the United States, call Emerson Liquid Division at 800 854 8257
• Outside the United States, call the nearest Emerson office. See the back page of the
manual.
8.2 Contacting and toroidal conductivity
diagnostics and troubleshooting
8.2.1 Overview of Diagnose menu
The 5081 transmitters automatically monitor for fault conditions. The Diagnose menu
allows the current variable settings to be reviewed and shows fault messages indicating
problems detected. The figure below illustrates the relationship between the Diagnose
menu and its submenus. The mnemonics are defined in Table 8-2.
Troubleshooting contacting conductivity analyzers
1. Look for a diagnostic fault message on the display to help pinpoint the problem.
Refer to Table 8-3 for an explanation of the message and a list of the possible
problems that triggered it.
2. Refer to the Quick troubleshooting guide, Table 8-4, for common loop problems and
the recommended actions to resolve them.
3. Follow the step-by-step troubleshooting flow chart, offered in Section 8.2.5, to
diagnose less common or more complex problems.
Displaying diagnostic values
The DIAG key on the IRC is used to access the Diagnosis menu. The menu flow is shown in
the figure above, and the mnemonics are defined in Table 8-2.
The FAuLtS submenu can be entered to show the last three faults/warnings. The most
recent is displayed first. NEXT scrolls through the remaining faults. Pressing EXIT clears all
fault/warnings and returns the FAuLtS segment. Disconnecting the transmitter removes all
fault messages from memory. The nonE message is displayed when no faults/warnings
have occurred.
Diagnostics and troubleshooting
Instruction Manual 81
To Next Page
Loading...
