Remove The Terminal Block; Remove The Electronics Board - Emerson Rosemount 3051 Manual

Rosemount Model 3051 Transmitter with F
Remove the Transmitter
from Service

Remove the Terminal Block

Remove the
Electronics Board
4-2
TM
fieldbus Protocol
OUNDATION
NOTE
Once you have determined a transmitter to be inoperable, remove it
from service.
Be aware of the following:
• Isolate and vent the process from the transmitter before
removing the transmitter from service.
• Remove all electrical leads and conduit. Avoid grounding out the
lead wires if other devices on the fieldbus segment
are operational.
• Detach the process flange by removing the four flange bolts and
the 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, and rinse with clear water.
• Whenever you remove the process flange or flange adapters,
visually inspect the Teflon O-rings. Replace the O-rings if they
show any signs of damage, such as nicks or cuts. If they are
undamaged, you may reuse them.
The Model 3051C transmitter is attached to the process connection by
four bolts and two cap screws. Remove the four bolts and separate the
transmitter from the process connection manifold or flange. You can
leave the process connection in place and ready for re-installation.
The Model 3051T is attached to the process by a single hex nut
process connection. Loosen the hex nut to separate the transmitter
from the process.
Electrical connections are located on the terminal block in the
compartment labelled "FIELD TERMINALS."
Loosen the two small screws located at the 9 o'clock and 4 o'clock
positions, and pull the entire terminal block out to remove it.
The transmitter electronics board is located in the compartment
opposite the terminal side. To remove the electronics board perform the
following procedure:
1. Remove the housing cover opposite the field terminal side.