American Sensor Technologies has released the AST46SW explosion-proof pressure switch. It offers a single pull, double throw configuration with factory-set switch points and hysteresis. The explosion-proof pressure switch can be used for onshore well head optimization systems and gas compression systems. Offshore Emergency Shutdown Systems (ESDs) often use explosion-proof rated pressure switches for high pressure controls to ensure safety. The one-piece, stainless steel sensing element of the unit will measure pressure in the most extreme temperature conditions. Standard models are configured with 316L, 17-4 PH, or Inconel 718 materials. With a maximum operating pressure range up to 20,000 PSI (1,378 bar), the switch will maintain high performance with zero signal drift due to an extremely thick and robust sensing diaphragm. Microprocessor technology produces excellent performance over a wide temperature range; advanced electronics, additionally, result in a compact overall size (one inch diameter and less than five inch overall length). The product is CSA-approved for use in hazardous areas including Class 1 Div 1 Explosion proof Groups A, B, C and D, and for mining applications, Class 2 Div 1 Groups E, F and G.