Pressure switches and differential-pressure switches for gas-explosive zones
Not only do explosions often cause severe damage to property - not infrequently, they lead to personal injuries and invalidity. Obviously, as far as possible, such dangerous situations must be prevented in the first place. In some areas of industry, such as the chemicals sector, however, ignitable gas or air mixtures are frequently inevitable. Here, it is absolutely essential to avoid sources of ignition. Technical devices are one such potential source. If it is nevertheless impossible to dispense with them, they must be certified for so-called explosive zones. The ATEX product guideline 94/9/EG contains specifications for their construction (ignition-protection type) and quality management.