Disassembly Procedures - Emerson Rosemount 2088 Reference Manual

Reference Manual
00809-0100-4108
Table 6-5: Status: Advisory
Alert name LCD
display
screen
LCD Display [If display
Update is not
Failure updating]
Configuratio [none]
n Changed
Analog ANLOG
Output Fixed
FIXED
Simulation [none]
Active
Analog ANLOG
Output
SAT
Saturated
6.5

Disassembly procedures

Do not remove the instrument cover in explosive atmospheres when the circuit is live.
6.5.1 Removing from service
Follow these steps:
Reference Manual
(continued)
LOI screen Problem
[If display is The LCD display is not
not receiving updates from the
updating] pressure sensor.
[none] A recent change has been
made the device by a
secondary HART
such as a handheld device.
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.
Recommended action
1. Check the connection between the LCD
display and the circuit board.
2. Replace the LCD display.
3. Replace the pressure transmitter.
1. Verify that the configuration change of the
device was intended and expected.
®
master
2. Clear this alert by selecting Clear
Configuration Changed Status.
3. Connect a HART master such as AMS
Device Manager or similar which will
automatically clear it.
1. Take action on any other notifications
from the device.
2. If the device is in loop test, and should no
longer be, disable or momentarily remove
power.
3. If the device is in multidrop mode and
should not be, re-enable loop current by
setting the polling address to 0.
1. Verify that simulation is no longer
required.
2. Disable simulation mode in service tools.
3. Perform a Device Reset.
1. Check the pressure applied to ensure it is
between the 4–20mA points.
2. Check the transmitter pressure
connection to make sure it is not plugged
or isolating diaphragms are not damaged.
3. Replace the pressure transmitter.
Troubleshooting
April 2021
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