Intrinsically safe barriers are devices used in hazardous environments to prevent electrical equipment from igniting flammable gases or dust. They work by limiting the amount of electrical energy that can be released, ensuring that any sparks or heat generated are not enough to cause an explosion. These barriers are commonly used in industries such as oil and gas, chemical manufacturing, and mining. By isolating the safe area from the hazardous zone, intrinsically safe barriers allow for the safe operation of equipment like sensors and transmitters in potentially dangerous locations.