INDUSTRIAL PURGE AND PRESSURIZATION SAFETY EQUIPMENT, NAMELY, TYPE X,Y,Z PURGE CONTROLLERS, PURGE AIR SUPPLY EQUIPMENT, PURGE AIR-PROVING EQUIPMENT, INTRINSIC-SAFE MUTIPLEXERS, AND INTRINSIC-SAFE TRANSDUCERS FOR HAZARDOUS AREA

industrial control devices; namely, type X purge controllers, purge air supply equipment, purge air-proving equipment, intrinsic-safe multiplexers, and intrinsic-safe transducers for hazardous area applications