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SIL Determination and PFD values of SIF
The Sensor element – PFD
(S),
i.ePFD
(S1)
+PFD
(S2)
Logic Solver element – PFD
(L)
and Final element PFD
(FE)
values are all calculated to provide an overall PFD & SIL.
PFD
(SYS)
= PFD
(S)
+ PFD
(L)
+ PFD
(FE)