Emerson Rosemount 5900 - 5900 And 2410 (SIL 2, 2-In-1)

66
Safety Manual
00809-0200-5100, Rev GA
Parameters Related to the Safety Function
February 2017
Parameters Related to the Safety Function
A.3 5900 and 2410 (SIL 2, 2-in-1)
Table A-3. Failure rates according to IEC 61508
Failure Category Failure Rates (in FIT)
Fail Safe (
S
)
1117
Fail Dangerous Detected (
DD
)
0
Fail Dangerous Undetected (
DU
)
57
Safe Failure Fraction (SFF)
(1)
(1) The complete sensor subsystem will need to be evaluated to determine the overall Safe Failure Fraction.
The number listed is for reference only.
95.2 %
Random capability SIL 2
Systematic capability SIL 3