AS 61511
SIL Verification Calculator
Calculate PFDavg and verify safety integrity levels for safety instrumented functions.
For reference only — always verify calculations against AS 61511 / IEC 61511 and consult a certified functional safety engineer (TUV/CFSE) for SIL verification of safety instrumented functions.
Target SIL
SIF Elements
Sensor
CH
Logic Solver
CH
Final Element
CH
Test & Common Cause
8,760 hours
Typical: 0.05 (good) — 0.1 (average) — 0.2 (poor)