Emerson Process Management ROSEMOUNT 5300 - Manual (Page 275)

Reference Manual
00809-0100-4530, Rev BA
July 2009
Rosemount 5300 Series
www.rosemount.com
Appendix E Performing Proof Test
Performing Proof Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E-1
375 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . page E-1
Rosemount Radar Master (RRM) . . . . . . . . . . . . . . . . . . . . page E-3
AMS Suite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E-5
PERFORMING PROOF
TEST 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.
375 FIELD
COMMUNICATOR 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.