The PFSD differential pressure sensor features a high-purity PFA/PTFE wetted design with a one-piece molded structure that enhances safety and reliability in corrosive liquid service. A ceramic sensing element handles acidic, alkaline, and ultra-pure water, while an optional sapphire version extends service life in HF/HCl media, making the sensor well suited for semiconductor, photovoltaic, display, and chemical processing applications.