There are many factors to consider when using the warning light, one of which is to consider whether it is used in an explosion-proof environment, first of all, let's understand the basic knowledge points about explosion-proof technology, there are three elements, combustibles, oxidants and ignition sources, when these three elements are met, they can only be generated, otherwise they can not happen.
*Environmental hazard zones are also strictly divided into zone0 (zone 0), zone1 (zone 1), zone 2 (zone 2), zone 20, zone 21, zone 22.
Zone0 represents the long-term existence or continuous occurrence of the ** gas environment, zone 1 (zone 1) represents the place where the ** gas environment may occur during normal operation, and zone 2 (zone 2) means that the ** gas environment cannot appear during normal operation, and even if it appears, it only occurs occasionally and is a short-term place.
Zone 20 means that combustible dust occurs frequently or continuously during normal operation, and the amount generated can reach the point where a mixture of combustible dust and air or an uncontrollable layer of extremely thick dust may be formed, as well as inside the container.
Zone 21 represents a site where there may be enough dust to form a combustible dust and air mixture during normal operation but is not classified as Zone 0.
Zone 22 indicates places where combustible dust clouds occur occasionally and only exist for a short period of time under abnormal conditions, or where combustible dust accumulates occasionally or where dust layers may exist and produce combustible dust-air mixtures.
The warning lights applicable to each ** environmental hazard area are also different, and the appropriate warning lights should be selected according to the explosion-proof environment area and environment when choosing warning lights.