With the increasing emphasis on vehicle efficiency, diesel fuel rail systems are being re-designed to run at higher pressures. American Sensor Technologies (AST) has been able to meet new requirements of engine manufacturers by supplying pressure transducers with pressure ratings up to 60,000 PSIG (4000 BAR) with the AST47HP High Pressure Package. Through its one piece stainless steel sensing element, the diaphragm is thick enough to withstand high pressure and high cycle applications.