Inspection - Emerson Rosemount 2051 Reference Manual

Safety Instrumented Systems Requirements
September 2020
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
4. Send a HART command to the transmitter to go to the low alarm current output
5. Perform a two-point calibration of the sensor over the full working range and verify
6. Remove the bypass and otherwise restore the normal operation.
7. Place the Security switch in the locked ( ) position.
Example
Note
• The user determines the proof test requirements for impulse piping.
• Automatic diagnostics are defined for the corrected % DU: The tests performed
internally by the device during runtime without requiring enabling or programming by
the user.
7.4.4 Calculation of average probability of failure on demand
(PFD
PFD
AVG
7.5

Inspection

7.5.1 Visual inspection
Not required
7.5.2 Special tools
Not required
7.5.3 Product repair
The product is repairable by major component replacement.
All failures detected by the transmitter diagnostics or by the proof-test must be reported.
Feedback can be submitted electronically at Emerson.com/Rosemount/Contact-Us.
All product repair and part replacement should be performed by qualified personnel.
(3) 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.
110
and verify that the analog current reaches that value.
and verify that the analog current reaches that value
the current output at each point.
)
AVG
calculation can be found in the
(3)
.
FMEDA Report.
Rosemount 2051 Pressure Transmitter
Reference Manual
00809-0100-4107