Intrinsic safety is increasing worldwide as a method of hazardous area protection with monitoring and measurement instruments. Significant savings, both initial installation and ongoing maintenance costs, can be realized in intrinsically-safe (IS) facilities or projects by selecting an associated apparatus that encompasses the required IS barrier protection for your system.  Available for download from the Technical White Papers section of the Moore Industries website, “Associated Apparatus: The Safe and Most Affordable IS Solution” gives you a brief introduction to intrinsic safety, the different components in an intrinsically-safe system, and the two different types of barriers.

Written by Tina Todd, Director of Engineering at Moore Industries, this paper explains the basic differences between simple apparatus with separate intrinsic safety barriers and associated apparatus with intrinsically-safe field connections. It addresses why selecting an associated apparatus which includes the IS barrier provides the most economic and effective use of IS technology. Additionally it addresses design, installation and maintenance considerations in selecting the best approach when choosing an intrinsic safety solution.

The techniques outlined in this paper are most applicable to the industrial process control sector including such industries as oil and gas production, oil refining, petrochemical, chemical, mining, pharmaceuticals, food & beverage, and pulp & paper.

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