The pH / redox (ORP) sensor AP200 provides high reliability and withstands the toughest environments for process monitoring and control. The rugged assembly is built to bear the rigors of weather and process. Parts in contact with the process comprise chemically-resistant PPS Ryton™ and stainless steel, or PPS Ryton™ and Hastelloy C. Flow-through holders are available in polypropylene, while the PPS Ryton™ insertion adapter enables installation in alternative material pipelines. Insertion and Flow-through systems tolerate temperatures up to 130 °C (266 °F) and pressures up to 6 bar (90 psi). The inner electrode connections are ingress-protected to IP 67 / NEMA 6P (exceeds NEMA 4X).