Nidec Copal Electronics PA-800 series uses a diffusion type semiconductor sensing chip encased inside a double diaphragm structure which allows for use in applications using corrosive fluids. The PA-800 comes with a built-in voltage to current converter and an amplifier circuit providing 1 V_DC to 5 V_DC output. They are used in semiconductor manufacturing equipment (CMP), medical equipment (dialysis units), industrial equipment (degassing applications), and automated assembly systems.