Disassembly Procedures - Emerson Rosemount 2051 Reference Manual

Troubleshooting
September 2020
Table 6-5: Status: Advisory
Alert name LCD
display
screen
Analog ANLOG
Output Fixed
FIXED
Simulation [none]
Active
Analog ANLOG
Output
SAT
Saturated
6.6

Disassembly procedures

Do not remove the instrument cover in explosive atmospheres when the circuit is live.
6.6.1 Removing from service
Follow these steps:
Procedure
1. Follow all plant safety rules and procedures.
2. Power down device.
3. Isolate and vent the process from the transmitter before removing the transmitter
4. Remove all electrical leads and disconnect conduit.
5. Remove the transmitter from the process connection.
102
(continued)
LOI screen Problem
ANALOG The analog output is fixed
and does not represent the
FIXED
process measurement. This
may be caused by other
conditions in the device, or
because the device has
been set to loop test or
multidrop mode.
[none] The device is in simulation
mode and may not be
reporting actual
information.
ANALOG The analog output is
saturated either high or low
SAT
due to the pressure either
above or below the range
values.
from service.
a) The Rosemount 2051 Transmitter is attached to the process connection by
four bolts and two cap screws. Remove the bolts and screws and separate the
transmitter from the process connection. Leave the process connection in
place and ready for re-installation. Reference
coplanar flange.
b) The Rosemount 2051 Transmitter is attached to the process by a single hex
nut process connection. Loosen the hex nut to separate the transmitter from
Recommended action
• Take action on any other notifications from
the device.
• If the device is in loop test, and should no
longer be, disable or momentarily remove
power.
• If the device is in multidrop mode and
should not be, re-enable loop current by
setting the polling address to 0.
• Verify that simulation is no longer required.
• Disable simulation mode in service tools.
• Perform a Device Reset.
• Check the pressure applied to ensure it is
between the 4–20mA points.
• Check the transmitter pressure connection
to make sure it is not plugged or isolating
diaphragms are not damaged.
• Replace the pressure transmitter.
Installation procedures
Rosemount 2051 Pressure Transmitter
Reference Manual
00809-0100-4107
for