explosion proof proximity switch
An explosion-proof proximity switch is a special kind of sensor designed specifically for environments where flammable gases, vapours or explosive dusts may prevail. Its chief role is to sense whether or not an object is present without making any physical contact. This is done through electromagnetic fields or by capacitive sensing. To start with, the robust casing of an explosion proof proximity switch prevents sparks or heat developing within the switch from setting off an external explosive atmosphere. It is a hardy unit with long life and high dependability. With applications in such industries as oil and gas extraction, metal mining and chemical manufacturing plants safety reigns supreme. The explosion proof proximity switch has now become a standard component in manufacturing industries. There is no lower limit on working temperatures, provided the device itself remains within its own allowable temperature range--this means it can function in sites where gas is bubbled from molten steel or even on metal smelting equipment like ladles doing double duty as casting machines.