Emerson Process Management 5300 manual Appendix E Performing Proof Test, Hart Sequence 2, 6

Reference Manual

00809-0100-4530, Rev BA July 2009

Rosemount 5300 Series

Appendix E Performing Proof Test

PERFORMING PROOF TEST

375FIELD COMMUNICATOR

Performing Proof Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E-1 375 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . page E-1 Rosemount Radar Master (RRM) . . . . . . . . . . . . . . . . . . . . page E-3 AMS Suite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E-5

This test detects approximately 95% of the possible DU failures of the transmitter including the sensor element. Here is a description of how to perform the test using a 375 Field Communicator, Rosemount Radar Master (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.

Prior to this test, inspect the echo curve to ensure that no disturbing echoes affecting the measurement performance are present.

375 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.

375 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.

375 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.

375 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.

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