Smart instruments in safety instrumented systems

Nobes, Tom
July 2009
InTech;Jul2009, Vol. 56 Issue 7, p14
The article talks about the advantages of smart instruments over traditional analogue. It reveals that instruments containing firmware are not limited to measurements but also cover actuators, valves and other control equipment. It also enumerates the reasons for the usage of analogue transmitters in safety instrumented systems (SIS) which included the fact that deviation diagnostics can function even when the hazardous condition is lacking. It then details problems with nuclear SIS and the framework for smart substantiation.


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