Emerson Rosemount 3051P Reference Manual page 94

Safety instrumented systems requirements
April 2020
7.5.2 Partial proof test
The partial suggested proof test consists of a power cycle plus reasonability checks of the
transmitter output. Reference the FMEDA Report for percent of possible DU failures in the
device.
See the
Prerequisites
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
3. Send a HART command to the transmitter to go to the high alarm current output
4. Send a HART command to the transmitter to go to the low alarm current output
5. Inspect the device for any leaks, visible damage, or contamination.
6. Remove the bypass and otherwise restore the normal operation.
7. Place the Security switch in the ( ) position.
7.5.3 Comprehensive proof test
The comprehensive proof test consists of performing the same steps as the partial proof
test but with a two point calibration of the pressure sensor in place of the reasonability
check. Reference the
Prerequisites
Required tools: Field Communicator and pressure calibration equipment.
Procedure
1. Bypass the safety function and take appropriate action to avoid a false trip.
2. Use HART
3. Send a HART command to the transmitter to go to the high alarm current output
94
FMEDA Report.
®
communications to retrieve any diagnostics and take appropriate
action.
and verify that the analog current reaches that value.
Note
This tests for compliance voltage problems such as a low loop power supply voltage
or increased wiring distance. This also tests for other possible failures.
See Verifying alarm level.
and verify that the analog current reaches that value.
Note
This tests for possible quiescent current related failures.
FMEDA Report
®
communications to retrieve any diagnostics and take appropriate
action.
and verify that the analog current reaches that value.
for percent of possible DU failures in the device.
Reference Manual
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