Yokogawa Electric Corporation B9578WD Scanner Module

The Yokogawa Electric Corporation B9578WD Scanner Module is a multi-channel input scan board designed for Yokogawa chart recorders and data acquisition systems to perform input signal scanning and channel multiplexing. With Part Number B9578WD and Product Type Scanner Module / Input Scan Board, it enables sequential signal acquisition and processing of analog inputs from sensors such as temperature, pressure, and flow across industrial environments. This internal PCB module features industrial-grade construction and weighs approximately 1 lb, intended for installation inside Yokogawa recorder systems used for data logging, chart recording, and process monitoring. Applications span power generation, chemical processing, oil and gas, and manufacturing, where accurate multi-channel data acquisition supports operational control and historical analysis. Common replacements include Yokogawa B9578WE, B9578WF, and B9566TG.