Yokogawa Electric Corporation DR1F-2 Output Isolator Card

The Yokogawa DR1F-2 EA0 suffix A Output Isolator Card is a signal‑isolation and analog output conditioning module designed for Yokogawa DCS and recorder systems to deliver stable, noise‑free 4–20 mA signals from field devices. It provides electrical isolation between input, output, and power, with an input typically 1–5 V DC (or equivalent) and an output of 4–20 mA DC, an input resistance around 250 Ω, and an output load up to roughly 750 Ω. Mount it in a signal conditioner nest via a backplane connector, with external wiring through M4 screw terminals, and rely on Yokogawa signal conditioner nests and DCS I/O systems for compatibility in process plants, power facilities, and industrial automation cabinets where signal integrity matters. Operating indoors in typical industrial environments from 0 to 50°C, the module emphasizes noise reduction and protection between field devices and the control system.