Turck BL67-2AI-I Analog Input Electronic Module

The TURCK BL67-2AI-I analog input module provides two 16-bit current-input channels for the BL67 distributed I/O system, designed to acquire 0–20 mA and 4–20 mA signals from field instrumentation and transmit them to a PLC or control system. It uses galvanic isolation via optocouplers, communicates on the BL67 backplane bus, and draws supply power from the BL67 system bus. IP67 protection is achieved when installed in a BL67 assembly, and the operating temperature range is -40°C to +70°C. The module is compatible with BL67 M8, M12, and M23 base modules. Commonly deployed in process skids, water treatment facilities, chemical processing systems, packaging machinery, and industrial manufacturing lines using 4-20 mA instrumentation; it supports connections to pressure transmitters, flow meters, level sensors, temperature transmitters, and process analyzers in food processing, pharmaceutical manufacturing, oil and gas facilities, and factory automation. Applications emphasize remote analog signal acquisition for decentralized systems and reduced wiring when mounted close to machines. Specifications include: two analog inputs, 0-20 mA or 4-20 mA signals, 16-bit resolution, backplane communication, and LED status/diagnostic indicators; order number 6827175; approvals cULus and CE; country of origin Germany or China depending on production batch.