If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Yokogawa AFG20D Duplex Field Control Unit Introduction The Yokogawa AFG20D Duplex Field Control Unit is a high‑availability control platform engineered for robust performance in industrial automation and distributed control systems (DCS). As a duplexed Field Control Unit (FCU), i *Your Name: *Your Email: *Your Name: *Vdcode: Submit