Reference Manual
00809-0100-4793, Rev CA
August 2004
5-9
Rosemount 8742C
Diagnostic Counter
The status tab in the Transducer Block window has a diagnostic counter that
counts the number of times the particular diagnostic was detected during the
life of the transmitter. The values can not be changed in the field.
HARDWARE
MAINTENANCE
The 8742C Magnetic Flowmeter Transmitter has no moving parts and
requires a minimum amount of scheduled maintenance. The transmitter
features a modular design for easy maintenance. If you suspect a
malfunction, check for an external cause before performing the diagnostics
presented below.
Rosemount flowtubes do not have any parts that require calibration or
maintenance. To confirm the working condition of the flowtube, refer to
Section 5: Troubleshooting.
The following procedures will help you disassemble and assemble the 8742C
hardware if you have followed the troubleshooting guide earlier in this section
of the manual and determined that hardware components need to be
replaced.
Replacing the
F
OUNDATION
™
Fieldbus
Electronics Housing
The Rosemount 8742C Magnetic Flowmeter Transmitter electronics housing
can be replaced easily when necessary. The procedure is the same for
integral or remote mount units. Use the following procedure:
Remove the Electronics Housing
1.
Turn off and disconnect electric power to the transmitter.
2.
Disconnect the wires and conduit from the housing.
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