1. Transmitter Failure, hardware or software alarm in LO position.
2. Transmitter Failure, hardware or software alarm in HI position.
6.5 Rosemount 3051SMV SIS operation and
maintenance
6.5.1 Proof test
The following proof tests are recommended. All proof test procedures must be carried out
by qualified personnel.
Use Field Communicator Fast Keys to perform a loop test, analog output trim, or sensor
trim. security switch should be in the ( ) position during proof test execution and
repositioned in the ( ) position after execution.
6.5.2
Partial proof test
The partial suggested proof test consists of a power cycle plus reasonability checks of the
transmitter output. This test will detect
~
48% of possible DU failures in the device.
About this task
FMEDA report can be found at Emerson.com/Automation-Solutions/Pressure/
Rosemount-3051SMV and look at the certificates and approvals documentation.
Required tools: Field Communicator and mA meter.
Procedure
1. Bypass the safety function and take appropriate action to avoid a false trip.
2. Use HART communications to retrieve any diagnostics and take appropriate action.
3. Send a HART command to the transmitter to go to the high alarm current output
and verify that the analog current reaches that value. See Alarm level verification.
Note
This tests for compliance voltage problems such as a low loop power supply voltage
or increased wiring resistance. This also tests for other possible failures.
4. Send a HART command to the transmitter to go to the low alarm current output
and verify that the analog current reaches that value.
Note
This tests for possible quiescent current related failures.
5. Perform a “reasonability check” on the pressure sensor reading and the sensor
temperature reading and if applicable the process temperature reading.
Reference Manual Safety Instrumented Systems Requirements
00809-0100-4803 October 2018
Emerson.com/Rosemount 145
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