The Brooks Instrument 5850E Series Mass Flow Controller (MFC) is a high-performance device engineered for precise and repeatable control of gas flow in a wide range of applications. Known for its reliability and long-term stability, the 5850E features a robust, all-metal construction and a proven thermal sensor design. This particular unit is factory-configured for Ethylene (C2H4) gas with a full-scale flow rate of 200 sccm. Its analog control interface allows for seamless integration into existing control systems, making it an ideal choice for semiconductor manufacturing, chemical processing, and research environments where accurate gas delivery is critical.