Product Repair; Specifications; Failure Rate Data; Safety Deviation - Emerson Rosemount 5408 Reference Manual

2.
3.
8.8.6

Product repair

The Rosemount 5408:SIS 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
8.9

Specifications

The Rosemount 5408:SIS must be operated according to the functional and performance
specifications provided in
8.9.1

Failure rate data

The FMEDA report
regarding failure rate analysis.
8.9.2

Safety deviation

±2.0% of analog output span
8.9.3

Transmitter response time

•
•
The transmitter response time will be a function of the configured Damping value.
Rosemount Radar Master Plus has a built-in function to calculate the transmitter's
measurement response time (requires option code EF2).
8.9.4

Diagnostic test interval

< 90 min
8.9.5

Turn-on time

< 40 s
(3) Step response time as per IEC 61298-2.
(4) A majority of the self-diagnostic tests is performed once every second and an action (if necessary) is taken in less than 30 seconds (default).
(5) Time from when power is applied to the transmitter until performance is within specifications.
Rosemount 5408 and 5408:SIS Level Transmitters
Obtain the level (or distance) measurement value from an independent level
measurement (e.g. the BPCS level sensor).
Compare the measurements and verify that the deviation is within the safety
deviation of 2%.
Appendix
includes failure rate data, assessment details, and assumptions
< 6 s at damping value 2 s (default)
< 2 s at damping value 0 s (minimum)
(4)
(5)
Safety Instrumented Systems (4-20 mA only)
EmersonProcess.com/Rosemount-safety
A.
(3)
(3)
(Contact Us).
145