Intrinsic safety explosion-proof technology is a common type of explosion-proof, by limiting the various parameters of the electrical equipment circuit, or taking protective measures to limit the spark discharge energy and heat energy of the circuit, so that the electrical spark and thermal effect generated under normal operation and the specified fault state can not ignite the explosive mixture of the surrounding environment, so as to achieve electrical explosion-proof. The circuit of this electrical equipment has its own safety, that is, it is safe from the "essence".

Intrinsically safe explosion-proof technology is a limited energy technology, so it is mostly used in various types of handheld terminals, instruments, sensors and other low-power products.

Compared with other explosion-proof types, intrinsic safety explosion-proof technology has the following advantages:

1, the use of intrinsically safe technology of electrical equipment small size, light, relatively cheap

2, low power products, can be repaired and replaced in the case of live parts.

3, intrinsically safe technology can be widely used in the explosive environment of zone 0. This is not available in other explosion-proof types.

Flameproof technology is mainly used with flameproof and explosion-proof housing to achieve the purpose of explosion-proof.

The interior of the electrical equipment shell will enter the surrounding explosive gas mixture due to breathing. When the equipment generates electrical sparks and dangerous high temperature, the explosive gas mixture in the shell will ignite, resulting in blasting force and shock wave.

On the one hand, the flameproof shell should be able to withstand the internal explosion pressure without damage;

On the other hand, the joint surface of the flameproof shell should prevent the explosion flame from spreading outside the shell and igniting the explosive gas mixture around it. Therefore, the flameproof housing should have two characteristics: flameproof and flameproof.

Intrinsically safe and flameproof are explosion-proof technologies, but they have their own characteristics and advantages, suitable for different products and occasions. It cannot simply be said that intrinsic safety or flameproof and explosion-proof technology is safer. Which explosion-proof technology is suitable for the product should be considered according to the characteristics of the product and the environment used. Of course, from the perspective of cost, intrinsically safe explosion-proof technology is more economical than flameproof explosion-proof technology.