Emerson Rosemount 5400 Series - Performing Proof Test; Field Communicator

251
Reference Manual
00809-0100-4026, Rev HA
Appendix D: Performing proof test
November 2014
Performing Proof Test
Appendix D Performing Proof Test
Performing proof test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 251
Field communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 251
RRM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 253
AMS Suite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 255
D.1 Performing proof test
This test detects approximately 95 % of the possible Dangerously Undetected (DU) failures of
the transmitter including the sensor element. Here is a description of how to perform the test
using a Field Communicator, RRM, or AMS
®
Suite. Note that the transmitter is not safety-rated
during proof tests. Alternative means should be used to ensure process safety during such
activities.
Required tools: HART
®
host/communicator and a mA meter.
D.2 Field communicator
Prior to this test, inspect the echo curve to ensure that no disturbing echoes affecting the
measurement performance are present.
HART Sequence: [2, 6, 1]
1. Bypass the safety PLC or take other appropriate actions to avoid false trip.
2. Disable write protection if the function is enabled.
HART Sequence: [3, 2, 1, 2, 1]. Type the password.
3. Using loop test, enter the mA value representing the high alarm current. Verify that the
analog output current is correct using the reference meter.
This step tests for compliance voltage problems, such as low power supply voltage or
increased wiring resistance.
HART Sequence: [2, 4, 1, 7]. Select 3 Other. Enter the analog output level representing
the high alarm current. Press Enter and click OK.
Verify that the analog output current is correct. Click Abort to end loop test.
4. Using loop test, enter the mA value representing the low alarm current. Verify that the
analog output current is correct using the reference meter.
This step tests for possible quiescent current related failures.
HART Sequence: [2, 4, 1, 7]. Select 3 Other. Enter the analog output level representing
the low alarm current. Press Enter and click OK.
Verify that the analog output current is correct. Click Abort to end loop test. Verify that
the Current output is restored to the original mode.