The PFSX UHP pressure sensor is built with high-purity PFA/PTFE wetted parts and flared or pillar connections, providing a clean, corrosion-resistant interface for demanding liquid media. The standard ceramic sensor suits acids, alkalis, and ultrapure water, while an optional sapphire sensor adds corrosion resistance for HF and HCl, supporting reliable monitoring in semiconductor, photovoltaic, display, and chemical processing applications.