About Instrumented Function

An instrumented function is a specific need of a safety instrumented system to monitor the conditions of a process. For each instrumented function defined for a safety instrumented system, at least one protective instrument loop (PIL) will exist to satisfy that need.

When you create an Instrumented Function, it will be linked automatically to the current SIL Analysis. When you create the Instrumented Function, in addition to details about the instrumented function, you can specify the following records linked to the Instrumented Function:

Logic Solver
Equipment and Functional Location
SIF Common Cause Failures
Hazardous events that may occur if the safe state associated with the current instrumented function occurs at the same time as the safe state associated with a different instrumented function.