Rosemount 2088 - Section 6 Troubleshooting; 6.1 Overview; 6.2 Safety Messages; 6.3 Diagnostic Messages

23
Reference Manual
00809-0100-4108, Rev CA
Configuration
March 2017
Configuration
2.11 Performing transmitter tests
2.11.1 Verifying alarm level
If the transmitter is repaired or replaced, verify the transmitter alarm level before returning
the transmitter to service. This is useful in testing the reaction of the control system to a
transmitter in an alarm state. Thus ensuring the control system recognizes the alarm when
activated. To verify the transmitter alarm values, perform a loop test and set the transmitter
output to the alarm value (see Ta ble 2 -5 , 2-6, and 2-7 on page 18, and “Verifying alarm
level” on page 23).
Note
Before returning transmitter to service, verify security switch is set to the correct position.
Refer to “Verify configuration” on page 11.
2.11.2 Performing an analog loop test
The analog 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. It is
recommended that the 4–20 mA (1–5 Vdc) points in addition to alarm levels when
installing, repairing, or replacing a transmitter.
The host system may provide a current measurement for the 4–20 mA (1–5 Vdc) HART
output. If not, connect a reference meter to the transmitter by either connecting the meter
to the test terminals on the terminal block, or shunting transmitter power through the
meter at some point in the loop. For 1–5 V output, voltage measurement is directly
measured from Vout to (–) terminals.
Performing a analog loop test using a Field Communicator
Performing a analog loop test using AMS Device Manager
1. Right select on the device and, within the Methods drop down menu, move cursor over
Diagnostics and Test. In the Diagnostics and Test drop down menu select Loop Test.
2. Select Next after setting the control loop to manual.
3. Follow Screen prompts to perform a Loop Test.
4. Select Finish to acknowledge the method is complete.
Performing analog loop test using a LOI
To perform an analog loop test using the LOI, the 4 mA (1 V), 20 mA (5 V), and custom mA
point may be set manually. Reference Figure 2-17 for instructions on how to perform a
transmitter loop test using an LOI.
From the HOME screen, enter the Fast Key sequence
Device Dashboard Fast Keys
3, 5, 1