Yokogawa EA1 SUFF A Input Module Circuit Board

The Yokogawa EA1 SUFF A is a signal conditioner input module (circuit board) for Yokogawa CENTUM XL and micro XL control systems, designed to receive and condition 2‑wire transmitter signals (4–20 mA typical) and convert them into isolated, usable signals for PLC/DCS processing. It provides electrical isolation and signal conversion, and in some configurations can supply power to field devices, helping protect control systems from noise and ground loops. The module mounts as a plug‑in card in a signal conditioner nest and is commonly used with transmitters such as pressure, flow, temperature, and level sensors in industries like oil & gas, manufacturing, and utilities. Specifications: Manufacturer Yokogawa; Model/Part Number EA1 SUFF A (EA1*A series); Product Type Input Signal Conditioner Module / Circuit Board; Signal Type 2-wire transmitter input (4–20 mA typical); Input Resistance ~250 Ω (typical); System Compatibility Yokogawa CENTUM XL / micro XL; Power supplied via system backplane / nest.