48
Reference Manual
00809-0100-4804, Rev CB
Operation and Maintenance
November 2016
Operation and Maintenance
4.4 Functional tests
The loop test command verifies the output of the ERS System, the integrity of the 4–20 mA loop, and the
operations of any recorders or similar devices installed in the loop.
To perform a loop test, follow the procedure below:
1. Connect a reference meter to the Rosemount ERS System by either connecting the meter to the test
terminals on the terminal block of the ERS primary sensor or shunting power through the meter at
some point in the loop.
2. Launch the loop test function using AMS Device Manager or a Field Communicator.
3. When prompted, select a mA value to have the ERS System output on the 4–20 mA loop.
4. Check the reference meter installed in the test loop to verify and compare the reading to the
expected mA output of the ERS System.
a. If the values match, the ERS System and the loop are configured and functioning properly.
b. If the values do not match, the reference meter may be attached to the wrong loop, there may be
a fault in the wiring, the ERS System may require an analog output trim, or the reference meter
may be malfunctioning.
4.4.1 Find device
The find device function causes the ERS System to flash a unique pattern of characters (Figure 4-1) on
the LCD display, making the system easily identifiable in person. The Find Device function requires a
digital display to be installed on the Rosemount 3051S ERS Primary Transmitter.
Figure 4-1. “Find Device” Pattern
To run the find device function, follow the procedure below:
1. Launch the find device function using AMS Device Manager or a Field Communicator.
2. The ERS System will continue to display the pattern shown in Figure 4-1 until the Find Device function
is stopped. Note that it may take up to 60 seconds for the ERS display to return to normal operation
upon completion of the Find Device function.
Fast Keys
3, 5, 5
Fast Keys
1, 7
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