Often, electronic equipment is required to carry out certain functions in potentially explosive atmospheres. To prevent potential ignition via a spark or arc in these environments, all components must be selected very carefully.
Components meeting these requirements are generally referred to as intrinsically safe. These components must be tested; that they will not become an ignition point when subject to short circuits or adjacent component failures. They must also switch to a defined state when subjected to overload conditions.
Generally, intrinsically safe approved components find applications in the mining industry, chemical processing plants, refineries, power stations and high dust producing plants. Any potentially flammable atmospheres represent areas of applications for these products.
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