Hazardous area classification is based on the classification of equipment and facilities according to the hazard level in the most gaseous atmosphere. In general, explosion-proof areas are divided into different areas according to the likelihood and frequency of the occurrence of ** gases.
Zone 1 and Zone 2 classify the degree of hazard in a gas environment according to European standards (e.g. ATEX).
Zone 1: In this area, ** gases or vapours may appear incidentally under normal operation. This means that the presence of ** gases is limited, but it is possible during normal operation. In this environment, it is necessary to use equipment and motors with an explosion-proof rating in a certain area to ensure that they can operate safely in the event of the presence of ** gases.
Zone 2: Compared with Zone 1, the presence of medium gases or vapours in Zone 2 is less common and short-lived. In this area, the presence of ** gases or vapours is unlikely, or, if present, only in rare cases. Even if it is possible, it will soon appear in a short time. Therefore, in the environment, this kind of equipment and motor does not need to be as special explosion-proof as a certain area, but it still needs to consider explosion-proof performance to ensure safe operation when there is a ** gas.
Therefore, the choice of explosion-proof servo motor will depend on its location in the environment where the ** gas may be present and the specific requirements for explosion-proof performance. The main difference between Zone 1 and Zone 2 is the likelihood and frequency of the occurrence of the ** gas, and the corresponding equipment requirements are different.