Field Upgrades And Replacements - Emerson Rosemount 3051S MultiVariable Reference Manual

Operation and Maintenance
October 2018
4.6

Field upgrades and replacements

4.6.1 Disassembly considerations
CAUTION
During disassembly, do not remove the instrument cover in explosive atmospheres when
the circuit is live as this may result in serious injury or death. Also, be aware of the
following:
• Follow all plant safety rules and procedures.
• Isolate and vent the process from the transmitter before removing the transmitter
from service.
• Disconnect optional process temperature sensor leads and cable.
• Remove all other electrical leads and conduit.
• Detach the process flange by removing the four flange bolts and two alignment screws
that secure it.
• Do not scratch, puncture, or depress the isolating diaphragms.
• Clean isolating diaphragms with a soft rag and a mild cleaning solution, then rinse with
clear water.
• Whenever the process flange or flange adapters are removed, visually inspect the PTFE
O-rings. Emerson recommends reusing O-rings if possible. If the O-rings show any signs
of damage, such as nicks or cuts, they should be replaced.
4.6.2 Housing assembly including feature board electronics
Field device labels
The SuperModule label reflects the replacement model code for reordering a complete
transmitter, including both the SuperModule assembly and Plantweb
Rosemount 3051SMV model code stamped on the Plantweb housing nameplate can be
used to reorder the Plantweb housing assembly.
Upgrading feature board electronics
The Rosemount 3051SMV allows feature board electronics upgrades. Different feature
board electronics assemblies provide new functionality and are easily interchanged for
upgrade. When replacing or upgrading the feature board electronics, use the
300SMV housing kit
120
which also includes the appropriate Plantweb housing.
Reference Manual
00809-0100-4803
™
housing. The
Rosemount 3051S Multivariable Transmitter
Rosemount