Intrinsic Safety is the natural choice for all low voltage instrumentation problems. This application note looks at the design, installation, maintenance and repair of Intrinsically Safe equipment and also considers the risks associated with dust.
Intrinsic safety (IS) is a low-energy signalling technique that prevents explosions from occurring by ensuring that the energy transferred to a hazardous area is well below the energy required to initiate an explosion. The energy levels made available for signalling are small but useable and more than adequate for the majority of instrumentation systems. The two mechanisms being considered that could initiate an explosion are:
- A spark
- A hot surface
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