Chapter 9 Troubleshooting; Overview; Using The Diagnostic Feature - Emerson Rosemount MCL-220 Manual

9 Troubleshooting
9.1

Overview

The transmitter continuously monitors itself and the sensor for problems. When the
transmitter identifies a problem, the word warning or fault appears intermittently in
the lower line of the main display. When the fault or warning message appears, press
DIAG for more information.
See Section
Warning The instrument or sensor is usable, but you should take steps as soon as
Fault
The transmitter also displays warning messages if a calibration is seriously in error. For
more information, see
9.2

Using the diagnostic feature

Complete the following steps to troubleshoot your transmitter with the diagnostic
feature.
1.
2.
Instruction Manual
9.2.
possible to correct the condition causing the warning.
The measurement is seriously in error and not to be trusted. A fault condition
might also mean that the transmitter has failed. Correct fault conditions
immediately. When a fault occurs, the analog output goes to 22.00 mA or to
the value programmed in
Section
To read diagnostic messages, press DIAG.
The screen below appears.
To display fault messages, select Faults. To display warning messages, select
Warnings. To read measurement information about the sensor, including raw sensor
signal and calibration data, choose Sensor 1 and press ENTER.
If you choose Faults or Warnings, a screen like the one below appears. S1 means sensor
1.
Section 6.3.3.
9.2.
Troubleshooting
63