About Protective Instrument Loops

A protective instrument loop consists of interconnected instruments that work together to serve a function that is defined for the safety instrumented system within which they exist.

When you create a protective instrument loop in SIS Management, you are creating a Protective Instrument Loop record. When you define the elements of the protective instrument loop (i.e., the interconnected instruments), you are creating records in the Protective Instrument Loop Element family and its subfamilies, and linking them to the Protective Instrument Loop. Throughout this documentation, when we refer to the protective instrument loop, we are referring to the Protective Instrument Loop and all the records that are linked to it. When we refer to Protective Instrument Loop Elements, we are referring to the records that are linked to the Protective Instrument Loop.