Reference Manual
00809-0100-4690, Rev FC
June 2011
Rosemount 2088 and 2090
3-16
Alarm Level Verification If the transmitter electronics board, sensor module, or LCD display is repaired
or replaced, verify the transmitter alarm level before returning the transmitter
to service. This feature is also useful in testing the reaction of the control
system to a transmitter in an alarm state. To verify the transmitter alarm
values, perform a loop test and set the transmitter output to the alarm value.
Save, Recall, or Clone
Configuration Data
Data that was entered off-line can be stored in the communicator memory and
downloaded to other transmitters later. Data also can be copied from a
transmitter in order to be sent to other transmitters in a process known as
“cloning.” This is especially useful if you work with a large number of
transmitters that require the same configuration data.
Field Communicator
DIAGNOSTICS
AND SERVICE
Test Device The Test Device command initiates a more extensive diagnostic routine than
that performed continuously by the transmitter. The transmitter test routine
can identify an electronics failure. If the transmitter test detects a problem, the
communicator displays messages to indicate the source of the problem.
Field Communicator
Loop Test The Loop Test command verifies the output of the transmitter, the integrity of
the loop, and the operations of any recorders or similar devices installed in the
loop. To initiate a loop test, perform the following procedure:
Field Communicator
1. Connect a reference meter to the transmitter. To do so, either connect
the meter to the test terminals on the transmitter terminal block, or
shunt the power to the transmitter through the meter at some point in
the loop.
2. From the HOME screen, Select 1 Device Setup, 2 Diagnostics and
Service, 2 Loop Test, to prepare to perform a loop test.
3. Select “OK” after you set the control loop to manual.
The communicator displays the loop test menu.
4. Select a discreet milliamp level for the transmitter to output. At the
“Choose analog output” prompt, select 1 4mA, 2 20mA, or select 3
other to manually input a value between 4 and 20 mA.
5. Check the current meter installed in the test loop to verify that it reads
the value you commanded the transmitter to output. If the readings do
not match, the transmitter requires an output trim or the current meter
is malfunctioning.
After completing the test procedure, the display returns to the loop test screen
and allows you to choose another output value.
4-20 mA Fast Keys
left arrow, 3 (note)
4-20 mA Fast Keys
1, 2, 1, 1
4-20 mA Fast Keys
1, 2, 2
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